{"solutions":{"359":"Method: standard\nSteps:\n1. Identify that $480 is 80% of the original price.\n2. Set up the equation: original price = sale price \/ 0.8.\n3. Calculate: original price = 480 \/ 0.8 = 600.\n\nFinal Answer: 600","496":"Method: standard\nSteps:\n1. Identify the fraction $\\frac{4}{7}$.\n2. Write it as $4 \\div 7$.\n\nFinal Answer: $\\dfrac{4}{7}$ = $4 \\div 7$","497":"Method: standard\nSteps:\n1. Identify the fraction $\\frac{2}{4}$.\n2. Write it as $2 \\div 4$.\n3. This shows the division sentence.\n\nFinal Answer: $\\dfrac{2}{4}$ = $2 \\div 4$","498":"Method: standard\nSteps:\n1. Identify the fraction $\\frac{5}{10}$.\n2. Write it as $5 \\div 10$.\n3. This shows the division sentence.\n\nFinal Answer: $\\dfrac{5}{10}$ = $5 \\div 10$","499":"Method: standard\nSteps:\n1. Identify the fraction $\\frac{1}{3}$.\n2. Write it as $1 \\div 3$.\n3. This shows the division sentence.\n\nFinal Answer: $\\dfrac{1}{3}$ = $1 \\div 3$","500":"Method: standard\nSteps:\n1. Identify the fraction $\\frac{4}{8}$.\n2. Write it as $4 \\div 8$.\n3. This shows the division sentence.\n\nFinal Answer: $\\dfrac{4}{8}$ = $4 \\div 8$","501":"Method: standard\nSteps:\n1. Identify the fraction $\\frac{6}{12}$.\n2. Write it as $6 \\div 12$.\n3. This shows the division sentence.\n\nFinal Answer: $\\dfrac{6}{12}$ = $6 \\div 12$","502":"Method: standard\nSteps:\n1. Identify the fraction $\\frac{7}{14}$.\n2. Write it as $7 \\div 14$.\n3. This shows the division sentence.\n\nFinal Answer: $\\dfrac{7}{14}$ = $7 \\div 14$","503":"Method: standard\nSteps:\n1. Identify the fraction $\\frac{8}{16}$.\n2. Write it as $8 \\div 16$.\n3. This shows the division sentence.\n\nFinal Answer: $\\dfrac{8}{16}$ = $8 \\div 16$","1318":"Method: standard\nSteps:\n1. Identify the dollar amount: 12\n2. Identify the cent amount: 30\n3. Combine them to write in decimal: 12.30\n\nFinal Answer: $12.30","1319":"Method: standard\nSteps:\n1. Identify the dollar amount: 18\n2. Identify the cent amount: 55\n3. Combine them to write in decimal: 18.55\n\nFinal Answer: $18.55","1320":"Method: standard\nSteps:\n1. Identify the dollar amount: 25\n2. Identify the cent amount: 70\n3. Combine them to write in decimal: 25.70\n\nFinal Answer: $25.70","1321":"Method: standard\nSteps:\n1. Identify the dollar amount: 9\n2. Identify the cent amount: 99\n3. Combine them to write in decimal: 9.99\n\nFinal Answer: $9.99","1322":"Method: standard\nSteps:\n1. Identify the dollar amount: 17\n2. Identify the cent amount: 25\n3. Combine them to write in decimal: 17.25\n\nFinal Answer: $17.25","1323":"Method: standard\nSteps:\n1. Identify the dollar amount: 8\n2. Identify the cent amount: 50\n3. Combine them as $8.50\n\nFinal Answer: $8.50","1324":"Method: standard\nSteps:\n1. Identify the dollar amount: 20\n2. Identify the cent amount: 15\n3. Combine them as $20.15\n\nFinal Answer: $20.15","1325":"Method: standard\nSteps:\n1. Identify the dollar amount: 15\n2. Identify the cent amount: 75\n3. Combine them as $15.75\n\nFinal Answer: $15.75","1326":"Method: standard\nSteps:\n1. Identify the dollar amount: 4\n2. Identify the cent amount: 20\n3. Combine them as $4.20\n\nFinal Answer: $4.20","1327":"Method: standard\nSteps:\n1. Identify the dollar amount: 17\n2. Identify the cent amount: 80\n3. Combine them as $17.80\n\nFinal Answer: $17.80","1328":"Method: standard\nSteps:\n1. Identify the dollar amount: 25\n2. Identify the cents amount: 50\n3. Combine them as 25.50\n\nFinal Answer: $25.50","1329":"Method: standard\nSteps:\n1. Identify the dollar amount: 43\n2. Identify the cents amount: 25\n3. Combine them as 43.25\n\nFinal Answer: $43.25","1330":"Method: standard\nSteps:\n1. Identify the dollar amount: 60\n2. Identify the cents amount: 70\n3. Combine them as 60.70\n\nFinal Answer: $60.70","1331":"Method: standard\nSteps:\n1. Identify the dollar amount: 89\n2. Identify the cents amount: 99\n3. Combine them as 89.99\n\nFinal Answer: $89.99","1332":"Method: standard\nSteps:\n1. Identify the dollar amount: 50\n2. Identify the cents amount: 55\n3. Combine them as 50.55\n\nFinal Answer: $50.55","1333":"Method: standard\nSteps:\n1. Identify the dollar amount: 70\n2. Identify the cent amount: 20\n3. Combine them as $70.20\n\nFinal Answer: $70.20","1334":"Method: standard\nSteps:\n1. Identify the dollar amount: 85\n2. Identify the cent amount: 45\n3. Combine them as $85.45\n\nFinal Answer: $85.45","1335":"Method: standard\nSteps:\n1. Identify the dollar amount: 90\n2. Identify the cent amount: 99\n3. Combine them as $90.99\n\nFinal Answer: $90.99","1336":"Method: standard\nSteps:\n1. Identify the dollar amount: 30\n2. Identify the cent amount: 15\n3. Combine them as $30.15\n\nFinal Answer: $30.15","1337":"Method: standard\nSteps:\n1. Identify the dollar amount: 60\n2. Identify the cent amount: 77\n3. Combine them as $60.77\n\nFinal Answer: $60.77","1338":"Method: standard\nSteps:\n1. Identify the dollar amount: 25\n2. Identify the cent amount: 50\n3. Combine them as 25.50\n\nFinal Answer: $25.50","1339":"Method: standard\nSteps:\n1. Identify the dollar amount: 40\n2. Identify the cent amount: 25\n3. Combine them as 40.25\n\nFinal Answer: $40.25","1340":"Method: standard\nSteps:\n1. Identify the dollar amount: 63\n2. Identify the cent amount: 10\n3. Combine them as 63.10\n\nFinal Answer: $63.10","1341":"Method: standard\nSteps:\n1. Identify the dollar amount: 88\n2. Identify the cent amount: 50\n3. Combine them as 88.50\n\nFinal Answer: $88.50","1343":"Method: standard\nSteps:\n1. Identify the dollar amount: 30\n2. Identify the cent amount: 50\n3. Write it as 30.50\n\nFinal Answer: $30.50","1344":"Method: standard\nSteps:\n1. Identify the dollar amount: 15\n2. Identify the cent amount: 75\n3. Write it as 15.75\n\nFinal Answer: $15.75","1345":"Method: standard\nSteps:\n1. Identify the dollar amount: 45\n2. Identify the cent amount: 20\n3. Write it as 45.20\n\nFinal Answer: $45.20","1346":"Method: standard\nSteps:\n1. Identify the dollar amount: 60\n2. Identify the cent amount: 5\n3. Write it as 60.05\n\nFinal Answer: $60.05","1347":"Method: standard\nSteps:\n1. Identify the dollar amount: 25\n2. Identify the cent amount: 30\n3. Write it as 25.30\n\nFinal Answer: $25.30","1348":"Method: standard\nSteps:\n1. Compare $3.25, $1.75, $0.90, and $2.50.\n2. Identify the smallest amount as $0.90.\n\nFinal Answer: $0.90","1349":"Method: standard\nSteps:\n1. Look at $4.20, $0.80, $2.10, and $1.50.\n2. The smallest amount is $0.80.\n\nFinal Answer: $0.80","1350":"Method: standard\nSteps:\n1. Review $2.30, $0.45, $1.20, and $0.99.\n2. Identify that $0.45 is the smallest.\n\nFinal Answer: $0.45","1351":"Method: standard\nSteps:\n1. Examine $1.50, $0.60, $3.00, and $2.25.\n2. Find that $0.60 is the lowest.\n\nFinal Answer: $0.60","1352":"Method: standard\nSteps:\n1. Look at $5.00, $0.75, $2.50, and $1.10.\n2. Identify that $0.75 is the smallest.\n\nFinal Answer: $0.75","1355":"Method: standard\nSteps:\n1. Compare $9.99, $7, 800\u00a2, and $10.\n2. Convert 800\u00a2 to dollars: 800\u00a2 = $8.\n3. Now compare $9.99, $7, $8, and $10.\n4. The largest amount is $10.\n\nFinal Answer: $10","1356":"Method: standard\nSteps:\n1. Look at $5.50, $3.75, 400\u00a2, and $6.\n2. Convert 400\u00a2 to dollars: 400\u00a2 = $4.\n3. Now compare $5.50, $3.75, $4, and $6.\n4. The greatest amount is $6.\n\nFinal Answer: $6","1357":"Method: standard\nSteps:\n1. Compare $2.20, $10, 900\u00a2, and $8.\n2. Convert 900\u00a2 to dollars: 900\u00a2 = $9.\n3. Now compare $2.20, $10, $9, and $8.\n4. The highest value is $10.\n\nFinal Answer: $10","1358":"Method: standard\nSteps:\n1. List the amounts: $1.25, $4.50, $2.75, $3.00.\n2. Compare each amount to find the smallest.\n\nFinal Answer: $1.25","1359":"Method: standard\nSteps:\n1. Look at the amounts: $0.50, $2.00, $1.75, $3.25.\n2. Find the least amount.\n\nFinal Answer: $0.50","1360":"Method: standard\nSteps:\n1. List the amounts: $0.30, $1.10, $0.90, $2.50.\n2. Compare the amounts to find the smallest.\n\nFinal Answer: $0.30","1361":"Method: standard\nSteps:\n1. Identify the amounts: $2.25, $0.75, $1.50, $3.00.\n2. Find the smallest amount.\n\nFinal Answer: $0.75","1362":"Method: standard\nSteps:\n1. List the amounts: $1.00, $0.85, $2.20, $1.50.\n2. Determine which is the least.\n\nFinal Answer: $0.85","1368":"Method: standard\nSteps:\n1. Take 320 cents.\n2. Divide by 100 to convert to dollars.\n3. 320 \u00f7 100 = 3.20.\n\nFinal Answer: $3.20","1369":"Method: standard\nSteps:\n1. Start with 150 cents.\n2. Divide by 100.\n3. 150 \u00f7 100 = 1.50.\n\nFinal Answer: $1.50","1370":"Method: standard\nSteps:\n1. Take 240 cents.\n2. Divide by 100 to find the dollar amount.\n3. 240 \u00f7 100 = 2.40.\n\nFinal Answer: $2.40","1371":"Method: standard\nSteps:\n1. Start with 600 cents.\n2. Divide by 100.\n3. 600 \u00f7 100 = 6.00.\n\nFinal Answer: $6.00","1372":"Method: standard\nSteps:\n1. Take 90 cents.\n2. Divide by 100 to get dollars.\n3. 90 \u00f7 100 = 0.90.\n\nFinal Answer: $0.90","1388":"Method: standard\nSteps:\n1. Calculate 4 * 20 = 80\n2. Calculate 2 * 10 = 20\n3. Calculate 6 * 1 = 6\n4. Add 80 + 20 + 6 = 106\n\nFinal Answer: $106","1389":"Method: standard\nSteps:\n1. Calculate 3 * 20 = 60\n2. Calculate 4 * 5 = 20\n3. Calculate 2 * 1 = 2\n4. Add 60 + 20 + 2 = 82\n\nFinal Answer: $82","1390":"Method: standard\nSteps:\n1. Calculate 6 * 10 = 60\n2. Calculate 1 * 20 = 20\n3. Calculate 3 * 5 = 15\n4. Add 60 + 20 + 15 = 95\n\nFinal Answer: $95","1391":"Method: standard\nSteps:\n1. Calculate 5 * 20 = 100\n2. Calculate 2 * 10 = 20\n3. Calculate 4 * 1 = 4\n4. Add 100 + 20 + 4 = 124\n\nFinal Answer: $124","1392":"Method: standard\nSteps:\n1. Calculate 8 * 5 = 40\n2. Calculate 3 * 10 = 30\n3. Calculate 2 * 20 = 40\n4. Add 40 + 30 + 40 = 110\n\nFinal Answer: $110","2888":"Given: The price of an item is N dollars. N is a decimal number with 2 decimal places. When rounded to 1 decimal place, the price is 5.5 dollars. What is the highest possible price of the item?<br> <br> Step 1: Understand the problem<br> N has 2 decimal places: N = _._ _<br> When rounded to 1 decimal place, N = 5.5<br> <br> Step 2: Find values that round to 5.5 (1 decimal place)<br> For a number to round to 5.5:<br> - Look at the hundredths digit<br> - If the hundredths digit is 0, 1, 2, 3, or 4 \u2192 round down<br> - If the hundredths digit is 5, 6, 7, 8, or 9 \u2192 round up<br> <br> Numbers that round down to 5.5: 5.50, 5.51, 5.52, 5.53, 5.54<br> Numbers that round up to 5.5: 5.45, 5.46, 5.47, 5.48, 5.49<br> <br> Step 3: Identify the highest value<br> Comparing all possibilities:<br> 5.45 < 5.46 < 5.47 < 5.48 < 5.49 < 5.50 < 5.51 < 5.52 < 5.53 < 5.54<br> <br> Highest N = 5.54<br> <br> Step 4: Verify<br> N = 5.54 rounded to 1 decimal place:<br> Hundredths digit = 4<br> Since 4 < 5, round down<br> 5.54 \u2192 5.5 \u2713<br> <br> Answer: The highest possible price of the item is $5.54.","2898":"Given: A shop sells apples at $K per kg, where K has 2 decimal places. When the price is rounded to 1 decimal place, it shows $3.5. A customer buys 2 kg of apples. What is the maximum amount the customer could pay?<br> <br> Step 1: Understand the problem<br> K has 2 decimal places and rounds to 3.5<br> Customer buys 2 kg of apples<br> Total cost = 2 \u00d7 K<br> To maximize the amount paid, K must be as large as possible<br> <br> Step 2: Find the greatest value of K that rounds to 3.5<br> For a number to round to 3.5:<br> - Look at the hundredths digit<br> - If the hundredths digit is 0, 1, 2, 3, or 4 \u2192 round down<br> - If the hundredths digit is 5, 6, 7, 8, or 9 \u2192 round up<br> <br> Numbers that round down to 3.5: 3.50, 3.51, 3.52, 3.53, 3.54<br> Numbers that round up to 3.5: 3.45, 3.46, 3.47, 3.48, 3.49<br> <br> Greatest K = 3.54<br> <br> Step 3: Calculate the maximum amount<br> Maximum amount = 2 \u00d7 K<br> Maximum amount = 2 \u00d7 3.54<br> Maximum amount = $7.08<br> <br> Step 4: Verify<br> K = 3.54 rounded to 1 decimal place:<br> Hundredths digit = 4, since 4 < 5, round down \u2192 3.5 \u2713<br> <br> Total cost = 2 \u00d7 3.54 = $7.08 \u2713<br> <br> Answer: The maximum amount the customer could pay is $7.08.","2913":"Given: Mr Wong bought 5 bottles of juice at $2.35 each. He paid with a $20 note. How much change did he receive?<br> <br> Step 1: Find the total cost of 5 bottles of juice<br> Cost of 1 bottle = $2.35<br> Cost of 5 bottles = $2.35 \u00d7 5<br> <br> Multiply as if there were no decimal:<br> 235 \u00d7 5 = 1175<br> <br> Count decimal places:<br> 2.35 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 1175 \u2192 11.75<br> <br> Total cost = $11.75<br> <br> Step 2: Find the change<br> Change = Amount paid \u2212 Total cost<br> Change = $20 \u2212 $11.75<br> Change = $8.25<br> <br> Step 3: Verify<br> Total cost: 2.35 \u00d7 5 = 11.75 \u2713<br> Change: 20 \u2212 11.75 = 8.25 \u2713<br> Check: 11.75 + 8.25 = 20 \u2713<br> <br> Answer: Mr Wong received $8.25 in change.","2916":"Given: A ribbon costs $2.45 per metre. Mrs Lee buys 6 metres of the ribbon. How much does she pay in total?<br> <br> Step 1: Identify the operation needed<br> Cost per metre = $2.45<br> Length of ribbon = 6 metres<br> Total cost = Cost per metre \u00d7 Length<br> <br> Step 2: Calculate 2.45 \u00d7 6<br> Multiply as if there were no decimal:<br> 245 \u00d7 6 = 1470<br> <br> Count decimal places:<br> 2.45 has 2 decimal places<br> 6 has 0 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 1470 \u2192 14.70<br> <br> So 2.45 \u00d7 6 = 14.70<br> <br> Step 3: Verify<br> 2.45 \u00d7 6<br> = 2 \u00d7 6 + 0.45 \u00d7 6<br> = 12 + 2.70<br> = 14.70 \u2713<br> <br> Answer: Mrs Lee pays $14.70 in total.","2923":"Given: Sarah bought 9 identical notebooks. She paid $7.29 in total. What was the cost of each notebook?<br> <br> Step 1: Identify the operation needed<br> Total cost = $7.29<br> Number of notebooks = 9<br> Cost of each notebook = Total cost \u00f7 Number of notebooks<br> <br> Step 2: Set up the division<br> 7.29 \u00f7 9<br> <br> Step 3: Perform the division<br> 7 \u00f7 9 = 0 remainder 7<br> 72 \u00f7 9 = 8 remainder 0<br> 9 \u00f7 9 = 1 remainder 0<br> <br> So 7.29 \u00f7 9 = 0.81<br> <br> Step 4: Verify<br> 0.81 \u00d7 9<br> = 0.8 \u00d7 9 + 0.01 \u00d7 9<br> = 7.2 + 0.09<br> = 7.29 \u2713<br> <br> Answer: The cost of each notebook was $0.81.","2933":"Given: Ali bought 6 bottles of juice at $1.85 each and 4 packets of biscuits at $2.35 each. How much did he spend altogether?<br> <br> Step 1: Calculate the cost of 6 bottles of juice<br> Cost of juice = $1.85 \u00d7 6<br> <br> Multiply as if there were no decimal:<br> 185 \u00d7 6 = 1110<br> <br> Count decimal places:<br> 1.85 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 1110 \u2192 11.10<br> <br> Cost of juice = $11.10<br> <br> Step 2: Calculate the cost of 4 packets of biscuits<br> Cost of biscuits = $2.35 \u00d7 4<br> <br> Multiply as if there were no decimal:<br> 235 \u00d7 4 = 940<br> <br> Count decimal places:<br> 2.35 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 940 \u2192 9.40<br> <br> Cost of biscuits = $9.40<br> <br> Step 3: Find the total amount spent<br> Total = Cost of juice + Cost of biscuits<br> Total = $11.10 + $9.40<br> Total = $20.50<br> <br> Step 4: Verify<br> Cost of juice: 1.85 \u00d7 6 = 11.10 \u2713<br> Cost of biscuits: 2.35 \u00d7 4 = 9.40 \u2713<br> Total: 11.10 + 9.40 = 20.50 \u2713<br> <br> Answer: Ali spent $20.50 altogether.","2939":"Given: 4 notebooks cost $5.40. Each notebook costs $_____.<br> <br> Step 1: Identify the operation needed<br> Total cost = $5.40<br> Number of notebooks = 4<br> Cost of each notebook = Total cost \u00f7 Number of notebooks<br> <br> Step 2: Divide the total cost by 4<br> Cost of each notebook = 5.40 \u00f7 4<br> <br> 5 \u00f7 4 = 1 remainder 1<br> 14 \u00f7 4 = 3 remainder 2<br> 20 \u00f7 4 = 5 remainder 0<br> <br> 5.40 \u00f7 4 = 1.35<br> <br> Step 3: Verify<br> 1.35 \u00d7 4<br> = 1 \u00d7 4 + 0.35 \u00d7 4<br> = 4 + 1.40<br> = 5.40 \u2713<br> <br> Answer: Each notebook costs $1.35.","2943":"Given: James sold 9 books at $4.15 each. He collected $___ from the sale.<br> <br> Step 1: Understand the problem<br> Cost of each book = $4.15<br> Number of books sold = 9<br> Total collected = Cost of each book \u00d7 Number of books<br> <br> Step 2: Calculate 4.15 \u00d7 9<br> Multiply as if there were no decimal:<br> 415 \u00d7 9 = 3735<br> <br> Count decimal places:<br> 4.15 has 2 decimal places<br> 9 has 0 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 3735 \u2192 37.35<br> <br> So 4.15 \u00d7 9 = 37.35<br> <br> Step 3: Verify<br> 4.15 \u00d7 9<br> = 4 \u00d7 9 + 0.15 \u00d7 9<br> = 36 + 1.35<br> = 37.35 \u2713<br> <br> Answer: He collected $37.35 from the sale.","2944":"Given: A talking robot costs $46, 8 times as much as a doll. Each doll costs $_____.<br> <br> Step 1: Understand the problem<br> Robot cost = $46<br> Robot cost = 8 times doll cost<br> Doll cost = Robot cost \u00f7 8<br> <br> Step 2: Calculate 46 \u00f7 8<br> 46 \u00f7 8<br> <br> 46 \u00f7 8 = 5 remainder 6<br> 60 \u00f7 8 = 7 remainder 4<br> 40 \u00f7 8 = 5 remainder 0<br> <br> So 46 \u00f7 8 = 5.75<br> <br> Step 3: Verify<br> Doll cost \u00d7 8 = Robot cost<br> 5.75 \u00d7 8<br> = 5 \u00d7 8 + 0.75 \u00d7 8<br> = 40 + 6<br> = 46 \u2713<br> <br> Answer: Each doll costs $5.75.","2945":"Given: 4 girls equally share the cost of a $9.8 pizza. Each pays $_____.<br> <br> Step 1: Understand the problem<br> Total cost of pizza = $9.8<br> Number of girls = 4<br> Cost per girl = Total cost \u00f7 Number of girls<br> <br> Step 2: Calculate 9.8 \u00f7 4<br> 9.8 \u00f7 4<br> <br> 9 \u00f7 4 = 2 remainder 1<br> 18 \u00f7 4 = 4 remainder 2<br> 20 \u00f7 4 = 5 remainder 0<br> <br> So 9.8 \u00f7 4 = 2.45<br> <br> Step 3: Verify<br> 2.45 \u00d7 4<br> = 2 \u00d7 4 + 0.45 \u00d7 4<br> = 8 + 1.80<br> = 9.80 \u2713<br> <br> Answer: Each pays $2.45.","2946":"Given: 2 identical packs of fruit juice cost $7.30. 5 packs cost $_____.<br> <br> Step 1: Understand the problem<br> Cost of 2 packs = $7.30<br> Need to find: Cost of 5 packs<br> <br> Step 2: Find the cost of 1 pack<br> Cost of 1 pack = $7.30 \u00f7 2<br> <br> 7 \u00f7 2 = 3 remainder 1<br> 13 \u00f7 2 = 6 remainder 1<br> 10 \u00f7 2 = 5 remainder 0<br> <br> Cost of 1 pack = $3.65<br> <br> Step 3: Find the cost of 5 packs<br> Cost of 5 packs = $3.65 \u00d7 5<br> <br> Multiply as if there were no decimal:<br> 365 \u00d7 5 = 1825<br> <br> Count decimal places:<br> 3.65 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 1825 \u2192 18.25<br> <br> Cost of 5 packs = $18.25<br> <br> Step 4: Verify<br> Cost of 1 pack: 7.30 \u00f7 2 = 3.65 \u2713<br> Cost of 5 packs: 3.65 \u00d7 5 = 18.25 \u2713<br> Check: 3.65 \u00d7 2 = 7.30 \u2713<br> <br> Answer: 5 packs cost $18.25.","2947":"Given: Mandy saved $18.75. Holly saved twice as much as Mandy. Together, the girls saved $_____.<br> <br> Step 1: Understand the problem<br> Mandy's savings = $18.75<br> Holly's savings = 2 times Mandy's savings<br> Total savings = Mandy's savings + Holly's savings<br> <br> Step 2: Find how much Holly saved<br> Holly's savings = $18.75 \u00d7 2<br> <br> Multiply as if there were no decimal:<br> 1875 \u00d7 2 = 3750<br> <br> Count decimal places:<br> 18.75 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 3750 \u2192 37.50<br> <br> Holly's savings = $37.50<br> <br> Step 3: Find the total savings<br> Total = Mandy's savings + Holly's savings<br> Total = $18.75 + $37.50<br> Total = $56.25<br> <br> Step 4: Verify<br> Holly's savings: 18.75 \u00d7 2 = 37.50 \u2713<br> Total savings: 18.75 + 37.50 = 56.25 \u2713<br> <br> Answer: Together, the girls saved $56.25.","2948":"Given: Mabel and Judy bought a small cake and a packet of milk, which cost $8.70 and $3.40 respectively. They shared the cost equally. Each paid $_____.<br> <br> Step 1: Understand the problem<br> Cost of small cake = $8.70<br> Cost of packet of milk = $3.40<br> Number of people sharing = 2<br> <br> Step 2: Find the total cost<br> Total cost = Cost of cake + Cost of milk<br> Total cost = $8.70 + $3.40<br> Total cost = $12.10<br> <br> Step 3: Divide the total cost equally between 2 people<br> Each paid = $12.10 \u00f7 2<br> <br> 12 \u00f7 2 = 6 remainder 0<br> 1 \u00f7 2 = 0 remainder 1<br> 10 \u00f7 2 = 5 remainder 0<br> <br> Each paid = $6.05<br> <br> Step 4: Verify<br> Total cost: 8.70 + 3.40 = 12.10 \u2713<br> Each paid: 12.10 \u00f7 2 = 6.05 \u2713<br> Check: 6.05 \u00d7 2 = 12.10 \u2713<br> <br> Answer: Each paid $6.05.","2950":"Given: Jack spent $17.50, twice what his son spent, in a bookstore. Altogether, they spent $_____.<br> <br> Step 1: Understand the problem<br> Jack's spending = $17.50<br> Jack spent twice what his son spent<br> So: Jack's spending = 2 \u00d7 Son's spending<br> <br> Step 2: Find how much the son spent<br> Son's spending = Jack's spending \u00f7 2<br> Son's spending = $17.50 \u00f7 2<br> <br> 17 \u00f7 2 = 8 remainder 1<br> 15 \u00f7 2 = 7 remainder 1<br> 10 \u00f7 2 = 5 remainder 0<br> <br> Son's spending = $8.75<br> <br> Step 3: Find the total amount spent<br> Total = Jack's spending + Son's spending<br> Total = $17.50 + $8.75<br> Total = $26.25<br> <br> Step 4: Verify<br> Son's spending: 17.50 \u00f7 2 = 8.75 \u2713<br> Jack spent twice son's spending: 8.75 \u00d7 2 = 17.50 \u2713<br> Total: 17.50 + 8.75 = 26.25 \u2713<br> <br> Answer: Altogether, they spent $26.25.","2952":"Given: Charlie bought 4 tins of paint, each at $23.99. He gave the cashier a $100 note. How much change did he receive?<br> <br> Step 1: Understand the problem<br> Cost of each tin of paint = $23.99<br> Number of tins = 4<br> Amount paid = $100<br> <br> Step 2: Find the total cost of 4 tins of paint<br> Total cost = $23.99 \u00d7 4<br> <br> Multiply as if there were no decimal:<br> 2399 \u00d7 4 = 9596<br> <br> Count decimal places:<br> 23.99 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 9596 \u2192 95.96<br> <br> Total cost = $95.96<br> <br> Step 3: Find the change<br> Change = Amount paid \u2212 Total cost<br> Change = $100 \u2212 $95.96<br> Change = $4.04<br> <br> Step 4: Verify<br> Total cost: 23.99 \u00d7 4 = 95.96 \u2713<br> Change: 100 \u2212 95.96 = 4.04 \u2713<br> Check: 95.96 + 4.04 = 100 \u2713<br> <br> Answer: Charlie received $4.04 in change.","2953":"Given: Amos paid $42.60 for a comic book and a magazine. The comic book cost three times the magazine. How much is the magazine?<br> <br> Step 1: Understand the problem<br> Total cost = $42.60<br> Comic book cost = 3 times magazine cost<br> <br> Step 2: Use the unitary method<br> Let magazine cost = 1 unit<br> Then comic book cost = 3 units<br> <br> Total = 1 unit + 3 units = 4 units<br> 4 units = $42.60<br> <br> Step 3: Find the value of 1 unit (magazine cost)<br> 1 unit = $42.60 \u00f7 4<br> <br> 42 \u00f7 4 = 10 remainder 2<br> 26 \u00f7 4 = 6 remainder 2<br> 20 \u00f7 4 = 5 remainder 0<br> <br> 1 unit = $10.65<br> <br> Magazine cost = $10.65<br> <br> Step 4: Verify<br> Magazine cost: $10.65<br> Comic book cost: $10.65 \u00d7 3 = $31.95<br> Total: $10.65 + $31.95 = $42.60 \u2713<br> <br> Answer: The magazine costs $10.65.","2954":"Given: Linda has $5.20, twice as much money as Sue. Sue has 4 times as much money as Pat. How much does Pat have?<br> <br> Step 1: Understand the problem<br> Linda's money = $5.20<br> Linda has twice as much as Sue<br> Sue has 4 times as much as Pat<br> <br> Step 2: Find how much Sue has<br> Linda = 2 \u00d7 Sue<br> Sue = Linda \u00f7 2<br> Sue = $5.20 \u00f7 2<br> <br> 5 \u00f7 2 = 2 remainder 1<br> 12 \u00f7 2 = 6 remainder 0<br> 0 \u00f7 2 = 0 remainder 0<br> <br> Sue = $2.60<br> <br> Step 3: Find how much Pat has<br> Sue = 4 \u00d7 Pat<br> Pat = Sue \u00f7 4<br> Pat = $2.60 \u00f7 4<br> <br> 2 \u00f7 4 = 0 remainder 2<br> 26 \u00f7 4 = 6 remainder 2<br> 20 \u00f7 4 = 5 remainder 0<br> <br> Pat = $0.65<br> <br> Step 4: Verify<br> Pat's money: $0.65<br> Sue's money: $0.65 \u00d7 4 = $2.60 \u2713<br> Linda's money: $2.60 \u00d7 2 = $5.20 \u2713<br> <br> Answer: Pat has $0.65.","2955":"Given: Jill has twenty-two 20\u00a2 and 50\u00a2 coins. The total amount of money that she has is $8.30. Number of 20\u00a2 coins is _____.<br> <br> Step 1: Understand the problem<br> Total number of coins = 22<br> Total value = $8.30 = 830\u00a2<br> Types of coins: 20\u00a2 and 50\u00a2<br> <br> Step 2: Use the assumption method<br> Assume all 22 coins are 50\u00a2 coins<br> Total value = 22 \u00d7 50\u00a2 = 1100\u00a2 = $11.00<br> <br> Step 3: Find the difference<br> Difference = $11.00 \u2212 $8.30 = $2.70 = 270\u00a2<br> <br> Step 4: Find the number of 20\u00a2 coins<br> Difference between one 50\u00a2 coin and one 20\u00a2 coin = 50\u00a2 \u2212 20\u00a2 = 30\u00a2<br> <br> Number of 20\u00a2 coins = 270\u00a2 \u00f7 30\u00a2<br> Number of 20\u00a2 coins = 9<br> <br> Step 5: Verify<br> Number of 20\u00a2 coins = 9<br> Number of 50\u00a2 coins = 22 \u2212 9 = 13<br> <br> Value of 20\u00a2 coins: 9 \u00d7 $0.20 = $1.80<br> Value of 50\u00a2 coins: 13 \u00d7 $0.50 = $6.50<br> Total value: $1.80 + $6.50 = $8.30 \u2713<br> Total coins: 9 + 13 = 22 \u2713<br> <br> Answer: The number of 20\u00a2 coins is 9.","2956":"Given: Stan wants to buy 8 pizzas, each $19.45. Stan needs at least ___ pieces of $10 notes.<br> <br> Step 1: Understand the problem<br> Cost of each pizza = $19.45<br> Number of pizzas = 8<br> Need to find minimum number of $10 notes required<br> <br> Step 2: Find the total cost of 8 pizzas<br> Total cost = $19.45 \u00d7 8<br> <br> Multiply as if there were no decimal:<br> 1945 \u00d7 8 = 15560<br> <br> Count decimal places:<br> 19.45 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 15560 \u2192 155.60<br> <br> Total cost = $155.60<br> <br> Step 3: Find the minimum number of $10 notes<br> Number of $10 notes = $155.60 \u00f7 $10<br> = 15.56<br> <br> Since Stan cannot use a fraction of a note, he needs to round up to the next whole number.<br> 15.56 \u2192 16 notes<br> <br> Step 4: Verify<br> 16 \u00d7 $10 = $160<br> $160 > $155.60 \u2713 (enough to pay)<br> <br> 15 \u00d7 $10 = $150<br> $150 < $155.60 \u2717 (not enough to pay)<br> <br> Answer: Stan needs at least 16 pieces of $10 notes.","2957":"Given: Jack has some 10\u00a2 and 5\u00a2 coins. The total amount of money that he has is $1.70. He has 8 more 10\u00a2 coins than 5\u00a2 coins. The total number of coins is _____.<br> <br> Step 1: Understand the problem<br> Total value = $1.70 = 170\u00a2<br> Number of 10\u00a2 coins = Number of 5\u00a2 coins + 8<br> <br> Step 2: Use the assumption method<br> Let the number of 5\u00a2 coins = 1 unit<br> Then the number of 10\u00a2 coins = 1 unit + 8<br> <br> Step 3: Set up the equation<br> Value of 5\u00a2 coins + Value of 10\u00a2 coins = 170\u00a2<br> (1 unit \u00d7 5\u00a2) + (1 unit + 8) \u00d7 10\u00a2 = 170\u00a2<br> 5 \u00d7 1 unit + 10 \u00d7 1 unit + 80 = 170<br> 15 units + 80 = 170<br> 15 units = 170 \u2212 80<br> 15 units = 90<br> 1 unit = 90 \u00f7 15<br> 1 unit = 6<br> <br> Step 4: Find the number of each type of coin<br> Number of 5\u00a2 coins = 6<br> Number of 10\u00a2 coins = 6 + 8 = 14<br> <br> Step 5: Find the total number of coins<br> Total number of coins = 6 + 14 = 20<br> <br> Step 6: Verify<br> Number of 5\u00a2 coins: 6<br> Number of 10\u00a2 coins: 14<br> Difference: 14 \u2212 6 = 8 \u2713<br> <br> Value of 5\u00a2 coins: 6 \u00d7 $0.05 = $0.30<br> Value of 10\u00a2 coins: 14 \u00d7 $0.10 = $1.40<br> Total value: $0.30 + $1.40 = $1.70 \u2713<br> <br> Answer: The total number of coins is 20.","2958":"Given: Mrs Tan bought 3 kg of chicken at $7.85 per kg and 2 kg of fish at $12.40 per kg. How much did she spend altogether?<br> <br> Step 1: Understand the problem<br> Chicken: 3 kg at $7.85 per kg<br> Fish: 2 kg at $12.40 per kg<br> <br> Step 2: Find the cost of chicken<br> Cost of chicken = $7.85 \u00d7 3<br> <br> Multiply as if there were no decimal:<br> 785 \u00d7 3 = 2355<br> <br> Count decimal places:<br> 7.85 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 2355 \u2192 23.55<br> <br> Cost of chicken = $23.55<br> <br> Step 3: Find the cost of fish<br> Cost of fish = $12.40 \u00d7 2<br> <br> Multiply as if there were no decimal:<br> 1240 \u00d7 2 = 2480<br> <br> Count decimal places:<br> 12.40 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 2480 \u2192 24.80<br> <br> Cost of fish = $24.80<br> <br> Step 4: Find the total amount spent<br> Total = Cost of chicken + Cost of fish<br> Total = $23.55 + $24.80<br> Total = $48.35<br> <br> Step 5: Verify<br> Cost of chicken: 7.85 \u00d7 3 = 23.55 \u2713<br> Cost of fish: 12.40 \u00d7 2 = 24.80 \u2713<br> Total: 23.55 + 24.80 = 48.35 \u2713<br> <br> Answer: 48.35 dollars","2962":"Given: John earns $18.50 per hour. He works 8 hours on Monday and 6 hours on Tuesday. How much does he earn in total for the two days?<br> <br> Step 1: Understand the problem<br> Earnings per hour = $18.50<br> Hours worked on Monday = 8 hours<br> Hours worked on Tuesday = 6 hours<br> <br> Step 2: Find the total hours worked<br> Total hours = Monday + Tuesday<br> Total hours = 8 + 6<br> Total hours = 14 hours<br> <br> Step 3: Calculate total earnings<br> Total earnings = $18.50 \u00d7 14<br> <br> Multiply as if there were no decimal:<br> 1850 \u00d7 14 = 25900<br> <br> Count decimal places:<br> 18.50 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 25900 \u2192 259.00<br> <br> Total earnings = $259.00<br> <br> Step 4: Verify<br> Total hours: 8 + 6 = 14 hours \u2713<br> Total earnings: 18.50 \u00d7 14 = 259.00 \u2713<br> <br> Alternative check:<br> Monday earnings: 18.50 \u00d7 8 = 148.00<br> Tuesday earnings: 18.50 \u00d7 6 = 111.00<br> Total: 148.00 + 111.00 = 259.00 \u2713<br> <br> Answer: John earns $259.00 in total for the two days.","2964":"Given: Sarah bought 5 identical books. She paid $100 and received $13.75 in change. What was the cost of each book?<br> <br> Step 1: Understand the problem<br> Number of books = 5<br> Amount paid = $100<br> Change received = $13.75<br> <br> Step 2: Find the total cost of 5 books<br> Total cost = Amount paid \u2212 Change received<br> Total cost = $100 \u2212 $13.75<br> Total cost = $86.25<br> <br> Step 3: Find the cost of each book<br> Cost of each book = Total cost \u00f7 Number of books<br> Cost of each book = $86.25 \u00f7 5<br> <br> 8 \u00f7 5 = 1 remainder 3<br> 36 \u00f7 5 = 7 remainder 1<br> 12 \u00f7 5 = 2 remainder 2<br> 25 \u00f7 5 = 5 remainder 0<br> <br> Cost of each book = $17.25<br> <br> Step 4: Verify<br> Total cost: 100 \u2212 13.75 = 86.25 \u2713<br> Cost of each book: 86.25 \u00f7 5 = 17.25 \u2713<br> Check: 17.25 \u00d7 5 = 86.25 \u2713<br> Check: 86.25 + 13.75 = 100 \u2713<br> <br> Answer: The cost of each book was $17.25.","2968":"Given: A supermarket sells oranges at $0.83 each. Mary bought some oranges and paid $20. She received $3.40 in change. How many oranges did she buy?<br> <br> Step 1: Understand the problem<br> Cost of each orange = $0.83<br> Amount paid = $20<br> Change received = $3.40<br> <br> Step 2: Find the total cost of oranges<br> Total cost = Amount paid \u2212 Change received<br> Total cost = $20 \u2212 $3.40<br> Total cost = $16.60<br> <br> Step 3: Find the number of oranges<br> Number of oranges = Total cost \u00f7 Cost of each orange<br> Number of oranges = $16.60 \u00f7 $0.83<br> <br> Multiply both by 100 to remove decimals:<br> 1660 \u00f7 83<br> <br> 83 \u00d7 20 = 1660<br> <br> So 1660 \u00f7 83 = 20<br> <br> Number of oranges = 20<br> <br> Step 4: Verify<br> Total cost: 20 \u2212 3.40 = 16.60 \u2713<br> Number of oranges: 16.60 \u00f7 0.83 = 20 \u2713<br> Check: 0.83 \u00d7 20 = 16.60 \u2713<br> Check: 16.60 + 3.40 = 20 \u2713<br> <br> Answer: Mary bought 20 oranges.","2972":"Given: Mae saved $4.50 per week for 8 weeks. Her brother saved $6.25 per week for 5 weeks. How much more did Mae save than her brother?<br> <br> Step 1: Understand the problem<br> Mae's savings per week = $4.50<br> Mae's number of weeks = 8<br> Brother's savings per week = $6.25<br> Brother's number of weeks = 5<br> <br> Step 2: Find Mae's total savings<br> Mae's total = $4.50 \u00d7 8<br> <br> Multiply as if there were no decimal:<br> 450 \u00d7 8 = 3600<br> <br> Count decimal places:<br> 4.50 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 3600 \u2192 36.00<br> <br> Mae's total savings = $36.00<br> <br> Step 3: Find brother's total savings<br> Brother's total = $6.25 \u00d7 5<br> <br> Multiply as if there were no decimal:<br> 625 \u00d7 5 = 3125<br> <br> Count decimal places:<br> 6.25 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 3125 \u2192 31.25<br> <br> Brother's total savings = $31.25<br> <br> Step 4: Find the difference<br> Difference = Mae's total \u2212 Brother's total<br> Difference = $36.00 \u2212 $31.25<br> Difference = $4.75<br> <br> Step 5: Verify<br> Mae's total: 4.50 \u00d7 8 = 36.00 \u2713<br> Brother's total: 6.25 \u00d7 5 = 31.25 \u2713<br> Difference: 36.00 \u2212 31.25 = 4.75 \u2713<br> <br> Answer: Mae saved $4.75 more than her brother.","2974":"Given: A fruit seller bought 15 kg of apples at $2.40 per kg. He sold all the apples at $3.15 per kg. How much profit did he make?<br> <br> Step 1: Understand the problem<br> Amount of apples = 15 kg<br> Buying price = $2.40 per kg<br> Selling price = $3.15 per kg<br> Profit = Total selling price \u2212 Total buying price<br> <br> Step 2: Find the total cost (buying price)<br> Total cost = $2.40 \u00d7 15<br> <br> Multiply as if there were no decimal:<br> 240 \u00d7 15 = 3600<br> <br> Count decimal places:<br> 2.40 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 3600 \u2192 36.00<br> <br> Total cost = $36.00<br> <br> Step 3: Find the total revenue (selling price)<br> Total revenue = $3.15 \u00d7 15<br> <br> Multiply as if there were no decimal:<br> 315 \u00d7 15 = 4725<br> <br> Count decimal places:<br> 3.15 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 4725 \u2192 47.25<br> <br> Total revenue = $47.25<br> <br> Step 4: Find the profit<br> Profit = Total revenue \u2212 Total cost<br> Profit = $47.25 \u2212 $36.00<br> Profit = $11.25<br> <br> Step 5: Verify<br> Total cost: 2.40 \u00d7 15 = 36.00 \u2713<br> Total revenue: 3.15 \u00d7 15 = 47.25 \u2713<br> Profit: 47.25 \u2212 36.00 = 11.25 \u2713<br> <br> Answer: He made a profit of $11.25.","2981":"Given: An electrician charges $45.50 for the first hour and $38.75 for each additional hour. How much does he charge for a job that takes 5 hours?<br> <br> Step 1: Understand the problem<br> Charge for first hour = $45.50<br> Charge for each additional hour = $38.75<br> Total hours = 5 hours<br> <br> Step 2: Find the number of additional hours<br> Additional hours = Total hours \u2212 First hour<br> Additional hours = 5 \u2212 1<br> Additional hours = 4 hours<br> <br> Step 3: Find the charge for additional hours<br> Charge for additional hours = $38.75 \u00d7 4<br> <br> Multiply as if there were no decimal:<br> 3875 \u00d7 4 = 15500<br> <br> Count decimal places:<br> 38.75 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 15500 \u2192 155.00<br> <br> Charge for additional hours = $155.00<br> <br> Step 4: Find the total charge<br> Total charge = Charge for first hour + Charge for additional hours<br> Total charge = $45.50 + $155.00<br> Total charge = $200.50<br> <br> Step 5: Verify<br> Additional hours: 5 \u2212 1 = 4 hours \u2713<br> Charge for additional hours: 38.75 \u00d7 4 = 155.00 \u2713<br> Total charge: 45.50 + 155.00 = 200.50 \u2713<br> <br> Answer: He charges $200.50 for a job that takes 5 hours.","2984":"Given: The postage for a parcel is $1.25 for the first 100 g and $0.45 for every additional 100 g. A parcel weighs 700 g. What is the total postage cost?<br> <br> Step 1: Understand the problem<br> Postage for first 100 g = $1.25<br> Postage for each additional 100 g = $0.45<br> Parcel weight = 700 g<br> <br> Step 2: Find the additional weight<br> Additional weight = Total weight \u2212 First 100 g<br> Additional weight = 700 \u2212 100<br> Additional weight = 600 g<br> <br> Step 3: Find the number of additional 100 g units<br> Number of additional units = 600 \u00f7 100<br> Number of additional units = 6<br> <br> Step 4: Find the cost of additional weight<br> Cost of additional weight = $0.45 \u00d7 6<br> <br> Multiply as if there were no decimal:<br> 45 \u00d7 6 = 270<br> <br> Count decimal places:<br> 0.45 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 270 \u2192 2.70<br> <br> Cost of additional weight = $2.70<br> <br> Step 5: Find the total postage cost<br> Total postage = Cost for first 100 g + Cost for additional weight<br> Total postage = $1.25 + $2.70<br> Total postage = $3.95<br> <br> Step 6: Verify<br> Additional weight: 700 \u2212 100 = 600 g \u2713<br> Number of additional units: 600 \u00f7 100 = 6 \u2713<br> Cost of additional weight: 0.45 \u00d7 6 = 2.70 \u2713<br> Total postage: 1.25 + 2.70 = 3.95 \u2713<br> <br> Answer: The total postage cost is $3.95.","2986":"Given: A printing shop charges $0.15 per black-and-white page and $0.85 per colour page. Mr Lim prints 45 black-and-white pages and 12 colour pages. He pays with a $20 note. How much change does he receive?<br> <br> Step 1: Understand the problem<br> Cost per black-and-white page = $0.15<br> Cost per colour page = $0.85<br> Number of black-and-white pages = 45<br> Number of colour pages = 12<br> Amount paid = $20<br> <br> Step 2: Find the cost of black-and-white pages<br> Cost of black-and-white pages = $0.15 \u00d7 45<br> <br> Multiply as if there were no decimal:<br> 15 \u00d7 45 = 675<br> <br> Count decimal places:<br> 0.15 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 675 \u2192 6.75<br> <br> Cost of black-and-white pages = $6.75<br> <br> Step 3: Find the cost of colour pages<br> Cost of colour pages = $0.85 \u00d7 12<br> <br> Multiply as if there were no decimal:<br> 85 \u00d7 12 = 1020<br> <br> Count decimal places:<br> 0.85 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 1020 \u2192 10.20<br> <br> Cost of colour pages = $10.20<br> <br> Step 4: Find the total cost<br> Total cost = Cost of black-and-white + Cost of colour<br> Total cost = $6.75 + $10.20<br> Total cost = $16.95<br> <br> Step 5: Find the change<br> Change = Amount paid \u2212 Total cost<br> Change = $20.00 \u2212 $16.95<br> Change = $3.05<br> <br> Step 6: Verify<br> Cost of black-and-white pages: 0.15 \u00d7 45 = 6.75 \u2713<br> Cost of colour pages: 0.85 \u00d7 12 = 10.20 \u2713<br> Total cost: 6.75 + 10.20 = 16.95 \u2713<br> Change: 20.00 \u2212 16.95 = 3.05 \u2713<br> <br> Answer: Mr Lim receives $3.05 in change.","2989":"Given: Mr Lim's car uses 6.85 litres of petrol per 100 km. He drives 400 km and petrol costs $2.45 per litre. How much does he spend on petrol for the journey?<br> <br> Step 1: Understand the problem<br> Petrol usage = 6.85 litres per 100 km<br> Distance driven = 400 km<br> Petrol cost = $2.45 per litre<br> <br> Step 2: Find the number of 100 km units<br> Number of units = 400 \u00f7 100<br> Number of units = 4<br> <br> Step 3: Find the total petrol used<br> Petrol used = 6.85 \u00d7 4<br> <br> Multiply as if there were no decimal:<br> 685 \u00d7 4 = 2740<br> <br> Count decimal places:<br> 6.85 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 2740 \u2192 27.40<br> <br> Petrol used = 27.40 litres<br> <br> Step 4: Find the total cost of petrol<br> Total cost = 27.40 \u00d7 2.45<br> <br> Multiply as if there were no decimal:<br> 2740 \u00d7 245 = 671300<br> <br> Count decimal places:<br> 27.40 has 2 decimal places<br> 2.45 has 2 decimal places<br> Total = 4 decimal places<br> <br> Place the decimal point:<br> 671300 \u2192 67.1300<br> <br> Total cost = $67.13<br> <br> Step 5: Verify<br> Number of 100 km units: 400 \u00f7 100 = 4 \u2713<br> Petrol used: 6.85 \u00d7 4 = 27.40 litres \u2713<br> Total cost: 27.40 \u00d7 2.45 = 67.13 \u2713<br> <br> Answer: Mr Lim spends $67.13 on petrol for the journey.","2992":"Given: A taxi charges $3.50 for the first kilometre and $0.65 for each additional kilometre. George travels 12 km. How much does he pay for the taxi ride?<br> <br> Step 1: Understand the problem<br> Charge for first kilometre = $3.50<br> Charge for each additional kilometre = $0.65<br> Total distance = 12 km<br> <br> Step 2: Find the number of additional kilometres<br> Additional kilometres = Total distance \u2212 First kilometre<br> Additional kilometres = 12 \u2212 1<br> Additional kilometres = 11 km<br> <br> Step 3: Find the charge for additional kilometres<br> Charge for additional kilometres = $0.65 \u00d7 11<br> <br> Multiply as if there were no decimal:<br> 65 \u00d7 11 = 715<br> <br> Count decimal places:<br> 0.65 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 715 \u2192 7.15<br> <br> Charge for additional kilometres = $7.15<br> <br> Step 4: Find the total fare<br> Total fare = Charge for first kilometre + Charge for additional kilometres<br> Total fare = $3.50 + $7.15<br> Total fare = $10.65<br> <br> Step 5: Verify<br> Additional kilometres: 12 \u2212 1 = 11 km \u2713<br> Charge for additional kilometres: 0.65 \u00d7 11 = 7.15 \u2713<br> Total fare: 3.50 + 7.15 = 10.65 \u2713<br> <br> Answer: George pays $10.65 for the taxi ride.","2993":"Given: A photographer prints 8 large photos at $4.75 each and 15 small photos at $1.85 each. She pays with a $100 note. How much change does she receive?<br> <br> Step 1: Understand the problem<br> Large photos: 8 at $4.75 each<br> Small photos: 15 at $1.85 each<br> Amount paid = $100<br> <br> Step 2: Find the cost of large photos<br> Cost of large photos = $4.75 \u00d7 8<br> <br> Multiply as if there were no decimal:<br> 475 \u00d7 8 = 3800<br> <br> Count decimal places:<br> 4.75 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 3800 \u2192 38.00<br> <br> Cost of large photos = $38.00<br> <br> Step 3: Find the cost of small photos<br> Cost of small photos = $1.85 \u00d7 15<br> <br> Multiply as if there were no decimal:<br> 185 \u00d7 15 = 2775<br> <br> Count decimal places:<br> 1.85 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 2775 \u2192 27.75<br> <br> Cost of small photos = $27.75<br> <br> Step 4: Find the total cost<br> Total cost = Cost of large photos + Cost of small photos<br> Total cost = $38.00 + $27.75<br> Total cost = $65.75<br> <br> Step 5: Find the change<br> Change = Amount paid \u2212 Total cost<br> Change = $100.00 \u2212 $65.75<br> Change = $34.25<br> <br> Step 6: Verify<br> Cost of large photos: 4.75 \u00d7 8 = 38.00 \u2713<br> Cost of small photos: 1.85 \u00d7 15 = 27.75 \u2713<br> Total cost: 38.00 + 27.75 = 65.75 \u2713<br> Change: 100.00 \u2212 65.75 = 34.25 \u2713<br> Check: 65.75 + 34.25 = 100.00 \u2713<br> <br> Answer: She receives $34.25 in change.","2994":"Given: A library charges a fine of $0.35 per day for each overdue book. Kevin returned 4 books that were 6 days overdue and 2 books that were 9 days overdue. How much fine did he pay in total?<br> <br> Step 1: Understand the problem<br> Fine per day per book = $0.35<br> 4 books overdue for 6 days<br> 2 books overdue for 9 days<br> <br> Step 2: Find the fine for 4 books that were 6 days overdue<br> Total overdue days = 4 \u00d7 6 = 24 days<br> Fine = $0.35 \u00d7 24<br> <br> Multiply as if there were no decimal:<br> 35 \u00d7 24 = 840<br> <br> Count decimal places:<br> 0.35 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 840 \u2192 8.40<br> <br> Fine for 4 books = $8.40<br> <br> Step 3: Find the fine for 2 books that were 9 days overdue<br> Total overdue days = 2 \u00d7 9 = 18 days<br> Fine = $0.35 \u00d7 18<br> <br> Multiply as if there were no decimal:<br> 35 \u00d7 18 = 630<br> <br> Count decimal places:<br> 0.35 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 630 \u2192 6.30<br> <br> Fine for 2 books = $6.30<br> <br> Step 4: Find the total fine<br> Total fine = Fine for 4 books + Fine for 2 books<br> Total fine = $8.40 + $6.30<br> Total fine = $14.70<br> <br> Step 5: Verify<br> Fine for 4 books (6 days): 0.35 \u00d7 24 = 8.40 \u2713<br> Fine for 2 books (9 days): 0.35 \u00d7 18 = 6.30 \u2713<br> Total fine: 8.40 + 6.30 = 14.70 \u2713<br> <br> Alternative check:<br> Total book-days = 24 + 18 = 42<br> Total fine = 0.35 \u00d7 42 = 14.70 \u2713<br> <br> Answer: Kevin paid $14.70 in total fines.","2995":"Given: A caterer prepares food for a party. She uses 2.65 kg of chicken for every 10 guests. If there are 80 guests and chicken costs $8.50 per kg, how much does she spend on chicken?<br> <br> Step 1: Understand the problem<br> Chicken per 10 guests = 2.65 kg<br> Number of guests = 80<br> Cost of chicken = $8.50 per kg<br> <br> Step 2: Find the number of groups of 10 guests<br> Number of groups = 80 \u00f7 10<br> Number of groups = 8<br> <br> Step 3: Find the total amount of chicken needed<br> Total chicken = 2.65 \u00d7 8<br> <br> Multiply as if there were no decimal:<br> 265 \u00d7 8 = 2120<br> <br> Count decimal places:<br> 2.65 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 2120 \u2192 21.20<br> <br> Total chicken = 21.2 kg<br> <br> Step 4: Find the total cost of chicken<br> Total cost = 21.2 \u00d7 8.50<br> <br> Multiply as if there were no decimal:<br> 212 \u00d7 850 = 180200<br> <br> Count decimal places:<br> 21.2 has 1 decimal place<br> 8.50 has 2 decimal places<br> Total = 3 decimal places<br> <br> Place the decimal point:<br> 180200 \u2192 180.200<br> <br> Total cost = $180.20<br> <br> Step 5: Verify<br> Number of groups: 80 \u00f7 10 = 8 \u2713<br> Total chicken: 2.65 \u00d7 8 = 21.2 kg \u2713<br> Total cost: 21.2 \u00d7 8.50 = 180.20 \u2713<br> <br> Answer: She spends $180.20 on chicken.","2996":"Given: A mobile phone plan charges $0.08 per minute for calls and $0.05 per text message. In one month, Lily made 125 minutes of calls and sent 240 text messages. How much did she spend on her phone that month?<br> <br> Step 1: Understand the problem<br> Cost per minute for calls = $0.08<br> Cost per text message = $0.05<br> Minutes of calls = 125<br> Number of text messages = 240<br> <br> Step 2: Find the cost of calls<br> Cost of calls = $0.08 \u00d7 125<br> <br> Multiply as if there were no decimal:<br> 8 \u00d7 125 = 1000<br> <br> Count decimal places:<br> 0.08 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 1000 \u2192 10.00<br> <br> Cost of calls = $10.00<br> <br> Step 3: Find the cost of text messages<br> Cost of text messages = $0.05 \u00d7 240<br> <br> Multiply as if there were no decimal:<br> 5 \u00d7 240 = 1200<br> <br> Count decimal places:<br> 0.05 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 1200 \u2192 12.00<br> <br> Cost of text messages = $12.00<br> <br> Step 4: Find the total cost<br> Total cost = Cost of calls + Cost of text messages<br> Total cost = $10.00 + $12.00<br> Total cost = $22.00<br> <br> Step 5: Verify<br> Cost of calls: 0.08 \u00d7 125 = 10.00 \u2713<br> Cost of text messages: 0.05 \u00d7 240 = 12.00 \u2713<br> Total cost: 10.00 + 12.00 = 22.00 \u2713<br> <br> Answer: Lily spent $22.00 on her phone that month.","2999":"Given: A gym membership costs $45.75 per month. New members receive a discount of $8.50 off their first 3 months. How much does a new member pay for the first 6 months of membership?<br> <br> Step 1: Understand the problem<br> Normal monthly cost = $45.75<br> Discount for first 3 months = $8.50 off per month<br> Total period = 6 months<br> <br> Step 2: Find the discounted price for the first 3 months<br> Discounted price per month = $45.75 \u2212 $8.50<br> Discounted price per month = $37.25<br> <br> Step 3: Find the cost for the first 3 months<br> Cost for first 3 months = $37.25 \u00d7 3<br> <br> Multiply as if there were no decimal:<br> 3725 \u00d7 3 = 11175<br> <br> Count decimal places:<br> 37.25 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 11175 \u2192 111.75<br> <br> Cost for first 3 months = $111.75<br> <br> Step 4: Find the cost for the next 3 months (at full price)<br> Cost for next 3 months = $45.75 \u00d7 3<br> <br> Multiply as if there were no decimal:<br> 4575 \u00d7 3 = 13725<br> <br> Count decimal places:<br> 45.75 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 13725 \u2192 137.25<br> <br> Cost for next 3 months = $137.25<br> <br> Step 5: Find the total cost for 6 months<br> Total cost = Cost for first 3 months + Cost for next 3 months<br> Total cost = $111.75 + $137.25<br> Total cost = $249.00<br> <br> Step 6: Verify<br> Discounted price: 45.75 \u2212 8.50 = 37.25 \u2713<br> Cost for first 3 months: 37.25 \u00d7 3 = 111.75 \u2713<br> Cost for next 3 months: 45.75 \u00d7 3 = 137.25 \u2713<br> Total cost: 111.75 + 137.25 = 249.00 \u2713<br> <br> Answer: A new member pays $249.00 for the first 6 months of membership.","3000":"Given: A mobile phone plan costs $28.50 plus $0.08 for each text message sent. Last month, David sent 225 text messages. How much was his phone bill?<br> <br> Step 1: Understand the problem<br> Base cost of plan = $28.50<br> Cost per text message = $0.08<br> Number of text messages = 225<br> <br> Step 2: Find the cost of text messages<br> Cost of text messages = $0.08 \u00d7 225<br> <br> Multiply as if there were no decimal:<br> 8 \u00d7 225 = 1800<br> <br> Count decimal places:<br> 0.08 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 1800 \u2192 18.00<br> <br> Cost of text messages = $18.00<br> <br> Step 3: Find the total phone bill<br> Total bill = Base cost + Cost of text messages<br> Total bill = $28.50 + $18.00<br> Total bill = $46.50<br> <br> Step 4: Verify<br> Cost of text messages: 0.08 \u00d7 225 = 18.00 \u2713<br> Total bill: 28.50 + 18.00 = 46.50 \u2713<br> <br> Answer: David's phone bill was $46.50.","3002":"Given: A pharmacist has 5.625 litres of cough syrup. She pours it into small bottles of 0.125 litres each. If she sells each bottle at $4.80, how much money will she collect from selling all the bottles?<br> <br> Step 1: Understand the problem<br> Total cough syrup = 5.625 litres<br> Each bottle holds = 0.125 litres<br> Selling price per bottle = $4.80<br> <br> Step 2: Find the number of bottles<br> Number of bottles = 5.625 \u00f7 0.125<br> <br> Multiply both by 1000 to remove decimals:<br> 5625 \u00f7 125<br> <br> 125 \u00d7 45 = 5625<br> <br> Number of bottles = 45<br> <br> Step 3: Find the total money collected<br> Total money = $4.80 \u00d7 45<br> <br> Multiply as if there were no decimal:<br> 480 \u00d7 45 = 21600<br> <br> Count decimal places:<br> 4.80 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 21600 \u2192 216.00<br> <br> Total money = $216.00<br> <br> Step 4: Verify<br> Number of bottles: 5.625 \u00f7 0.125 = 45 \u2713<br> Check: 0.125 \u00d7 45 = 5.625 litres \u2713<br> Total money: 4.80 \u00d7 45 = 216.00 \u2713<br> <br> Answer: She will collect $216.00 from selling all the bottles.","3004":"Given: A library charges a fine of $0.25 per day for overdue books. Amy returned 3 books that were each 8 days overdue and 2 books that were each 5 days overdue. How much fine did Amy have to pay?<br> <br> Step 1: Understand the problem<br> Fine per day per book = $0.25<br> 3 books overdue for 8 days<br> 2 books overdue for 5 days<br> <br> Step 2: Find the fine for 3 books that were 8 days overdue<br> Total overdue days = 3 \u00d7 8 = 24 days<br> Fine = $0.25 \u00d7 24<br> <br> Multiply as if there were no decimal:<br> 25 \u00d7 24 = 600<br> <br> Count decimal places:<br> 0.25 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 600 \u2192 6.00<br> <br> Fine for 3 books = $6.00<br> <br> Step 3: Find the fine for 2 books that were 5 days overdue<br> Total overdue days = 2 \u00d7 5 = 10 days<br> Fine = $0.25 \u00d7 10<br> <br> Multiply as if there were no decimal:<br> 25 \u00d7 10 = 250<br> <br> Count decimal places:<br> 0.25 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 250 \u2192 2.50<br> <br> Fine for 2 books = $2.50<br> <br> Step 4: Find the total fine<br> Total fine = Fine for 3 books + Fine for 2 books<br> Total fine = $6.00 + $2.50<br> Total fine = $8.50<br> <br> Step 5: Verify<br> Fine for 3 books (8 days): 0.25 \u00d7 24 = 6.00 \u2713<br> Fine for 2 books (5 days): 0.25 \u00d7 10 = 2.50 \u2713<br> Total fine: 6.00 + 2.50 = 8.50 \u2713<br> <br> Alternative check:<br> Total book-days = 24 + 10 = 34<br> Total fine = 0.25 \u00d7 34 = 8.50 \u2713<br> <br> Answer: Amy had to pay $8.50 in fines.","3006":"Given: A bakery sells cupcakes at $1.85 each or a box of 6 for $9.90. Princess buys 4 boxes and 5 individual cupcakes. How much does she spend altogether?<br> <br> Step 1: Understand the problem<br> Cost per individual cupcake = $1.85<br> Cost per box of 6 = $9.90<br> Number of boxes = 4<br> Number of individual cupcakes = 5<br> <br> Step 2: Find the cost of 4 boxes<br> Cost of boxes = $9.90 \u00d7 4<br> <br> Multiply as if there were no decimal:<br> 990 \u00d7 4 = 3960<br> <br> Count decimal places:<br> 9.90 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 3960 \u2192 39.60<br> <br> Cost of boxes = $39.60<br> <br> Step 3: Find the cost of 5 individual cupcakes<br> Cost of individual cupcakes = $1.85 \u00d7 5<br> <br> Multiply as if there were no decimal:<br> 185 \u00d7 5 = 925<br> <br> Count decimal places:<br> 1.85 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 925 \u2192 9.25<br> <br> Cost of individual cupcakes = $9.25<br> <br> Step 4: Find the total cost<br> Total cost = Cost of boxes + Cost of individual cupcakes<br> Total cost = $39.60 + $9.25<br> Total cost = $48.85<br> <br> Step 5: Verify<br> Cost of 4 boxes: 9.90 \u00d7 4 = 39.60 \u2713<br> Cost of 5 individual cupcakes: 1.85 \u00d7 5 = 9.25 \u2713<br> Total cost: 39.60 + 9.25 = 48.85 \u2713<br> <br> Answer: Princess spends $48.85 altogether.","3009":"Given: An ice cream shop sells scoops at $2.35 each. Toppings cost $0.65 per topping. A family orders 8 scoops with a total of 5 toppings. They pay with a $50 note. How much change do they receive?<br> <br> Step 1: Understand the problem<br> Cost per scoop = $2.35<br> Cost per topping = $0.65<br> Number of scoops = 8<br> Number of toppings = 5<br> Amount paid = $50<br> <br> Step 2: Find the cost of 8 scoops<br> Cost of scoops = $2.35 \u00d7 8<br> <br> Multiply as if there were no decimal:<br> 235 \u00d7 8 = 1880<br> <br> Count decimal places:<br> 2.35 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 1880 \u2192 18.80<br> <br> Cost of scoops = $18.80<br> <br> Step 3: Find the cost of 5 toppings<br> Cost of toppings = $0.65 \u00d7 5<br> <br> Multiply as if there were no decimal:<br> 65 \u00d7 5 = 325<br> <br> Count decimal places:<br> 0.65 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 325 \u2192 3.25<br> <br> Cost of toppings = $3.25<br> <br> Step 4: Find the total cost<br> Total cost = Cost of scoops + Cost of toppings<br> Total cost = $18.80 + $3.25<br> Total cost = $22.05<br> <br> Step 5: Find the change<br> Change = Amount paid \u2212 Total cost<br> Change = $50.00 \u2212 $22.05<br> Change = $27.95<br> <br> Step 6: Verify<br> Cost of scoops: 2.35 \u00d7 8 = 18.80 \u2713<br> Cost of toppings: 0.65 \u00d7 5 = 3.25 \u2713<br> Total cost: 18.80 + 3.25 = 22.05 \u2713<br> Change: 50.00 \u2212 22.05 = 27.95 \u2713<br> Check: 22.05 + 27.95 = 50.00 \u2713<br> <br> Answer: They receive $27.95 in change.","3011":"Given: Concert tickets cost $78.50 for adults and $45.25 for children. A group buys 4 adult tickets and 6 children tickets. They receive a group discount of $25.80. How much do they pay altogether?<br> <br> Step 1: Understand the problem<br> Adult ticket = $78.50<br> Children ticket = $45.25<br> Number of adult tickets = 4<br> Number of children tickets = 6<br> Group discount = $25.80<br> <br> Step 2: Find the cost of adult tickets<br> Cost of adult tickets = $78.50 \u00d7 4<br> <br> Multiply as if there were no decimal:<br> 7850 \u00d7 4 = 31400<br> <br> Count decimal places:<br> 78.50 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 31400 \u2192 314.00<br> <br> Cost of adult tickets = $314.00<br> <br> Step 3: Find the cost of children tickets<br> Cost of children tickets = $45.25 \u00d7 6<br> <br> Multiply as if there were no decimal:<br> 4525 \u00d7 6 = 27150<br> <br> Count decimal places:<br> 45.25 has 2 decimal places<br> Total = 2 decimal places<br> <br> Place the decimal point:<br> 27150 \u2192 271.50<br> <br> Cost of children tickets = $271.50<br> <br> Step 4: Find the total cost before discount<br> Total before discount = Adult tickets + Children tickets<br> Total before discount = $314.00 + $271.50<br> Total before discount = $585.50<br> <br> Step 5: Apply the group discount<br> Total after discount = Total before discount \u2212 Discount<br> Total after discount = $585.50 \u2212 $25.80<br> Total after discount = $559.70<br> <br> Step 6: Verify<br> Cost of adult tickets: 78.50 \u00d7 4 = 314.00 \u2713<br> Cost of children tickets: 45.25 \u00d7 6 = 271.50 \u2713<br> Total before discount: 314.00 + 271.50 = 585.50 \u2713<br> Total after discount: 585.50 \u2212 25.80 = 559.70 \u2713<br> Check: 559.70 + 25.80 = 585.50 \u2713<br> <br> Answer: They pay $559.70 altogether.","3169":"Given: A square playground has an area of 225 m\u00b2. A fence costs $15 per metre. Find the cost to fence the entire playground.<br> <br> Step 1: Identify the information<br> Area = 225 m\u00b2<br> Cost of fence = $15 per metre<br> <br> Step 2: Use the area formula for a square<br> Area = Side \u00d7 Side<br> 225 = Side\u00b2<br> <br> Step 3: Solve for side<br> Side = \u221a225 = 15 m<br> <br> Step 4: Calculate the perimeter<br> Perimeter = 4 \u00d7 Side<br> Perimeter = 4 \u00d7 15 = 60 m<br> <br> Step 5: Calculate the total cost<br> Total cost = Perimeter \u00d7 Cost per metre<br> Total cost = 60 \u00d7 $15 = $900<br> <br> Step 6: Verify<br> Area = 15 \u00d7 15 = 225 m\u00b2 \u2713<br> <br> Answer: The cost to fence the entire playground is $900","3180":"Given: A square room has a perimeter of 52 m. Carpet costs $12 per m\u00b2. Find the cost to carpet the entire room.<br> <br> Step 1: Identify the information<br> Perimeter = 52 m<br> Cost of carpet = $12 per m\u00b2<br> <br> Step 2: Use the perimeter formula for a square<br> Perimeter = 4 \u00d7 Side<br> 52 = 4 \u00d7 Side<br> <br> Step 3: Solve for side<br> Side = 52 \u00f7 4 = 13 m<br> <br> Step 4: Calculate the area of the room<br> Area = Side \u00d7 Side<br> Area = 13 \u00d7 13 = 169 m\u00b2<br> <br> Step 5: Calculate the total cost<br> Total cost = Area \u00d7 Cost per m\u00b2<br> Total cost = 169 \u00d7 $12 = $2028<br> <br> Step 6: Verify<br> Perimeter = 4 \u00d7 13 = 52 m \u2713<br> <br> Answer: The cost to carpet the entire room is $2028","3185":"Given: A square kitchen has an area of 169 m\u00b2. Tiles measuring 1 m by 1 m cost $8 each. Find the cost to tile the kitchen floor.<br> <br> Step 1: Identify the information<br> Area of kitchen = 169 m\u00b2<br> Tile size = 1 m \u00d7 1 m = 1 m\u00b2<br> Cost per tile = $8<br> <br> Step 2: Calculate the number of tiles needed<br> Number of tiles = Area of kitchen \u00f7 Area of one tile<br> Number of tiles = 169 \u00f7 1 = 169 tiles<br> <br> Step 3: Calculate the total cost<br> Total cost = Number of tiles \u00d7 Cost per tile<br> Total cost = 169 \u00d7 $8 = $1352<br> <br> Step 4: Verify<br> 169 tiles \u00d7 1 m\u00b2 = 169 m\u00b2 \u2713<br> <br> Answer: The cost to tile the kitchen floor is $1352","3192":"Given: A square playground has an area of 400 m\u00b2. A fence costs $12 per metre. Find the total cost of fencing the playground.<br> <br> Step 1: Identify the information<br> Area = 400 m\u00b2<br> Cost of fence = $12 per metre<br> <br> Step 2: Use the area formula for a square<br> Area = Side \u00d7 Side<br> 400 = Side\u00b2<br> <br> Step 3: Solve for side<br> Side = \u221a400 = 20 m<br> <br> Step 4: Calculate the perimeter<br> Perimeter = 4 \u00d7 Side<br> Perimeter = 4 \u00d7 20 = 80 m<br> <br> Step 5: Calculate the total cost<br> Total cost = Perimeter \u00d7 Cost per metre<br> Total cost = 80 \u00d7 $12 = $960<br> <br> Step 6: Verify<br> Area = 20 \u00d7 20 = 400 m\u00b2 \u2713<br> <br> Answer: The total cost of fencing the playground is $960","3206":"Given: A square room has a perimeter of 52 m. Carpet costs $15 per m\u00b2. Find the cost to carpet the entire room.<br> <br> Step 1: Identify the information<br> Perimeter = 52 m<br> Cost of carpet = $15 per m\u00b2<br> <br> Step 2: Use the perimeter formula for a square<br> Perimeter = 4 \u00d7 Side<br> 52 = 4 \u00d7 Side<br> <br> Step 3: Solve for side<br> Side = 52 \u00f7 4 = 13 m<br> <br> Step 4: Calculate the area of the room<br> Area = Side \u00d7 Side<br> Area = 13 \u00d7 13 = 169 m\u00b2<br> <br> Step 5: Calculate the total cost<br> Total cost = Area \u00d7 Cost per m\u00b2<br> Total cost = 169 \u00d7 $15 = $2535<br> <br> Step 6: Verify<br> Perimeter = 4 \u00d7 13 = 52 m \u2713<br> <br> Answer: The cost to carpet the entire room is $2535","3214":"Given: A square billboard has a perimeter of 52 m. The cost of painting is $8 per m\u00b2. Find the total cost of painting the billboard.<br> <br> Step 1: Identify the information<br> Perimeter = 52 m<br> Cost of painting = $8 per m\u00b2<br> <br> Step 2: Use the perimeter formula for a square<br> Perimeter = 4 \u00d7 Side<br> 52 = 4 \u00d7 Side<br> <br> Step 3: Solve for side<br> Side = 52 \u00f7 4 = 13 m<br> <br> Step 4: Calculate the area of the billboard<br> Area = Side \u00d7 Side<br> Area = 13 \u00d7 13 = 169 m\u00b2<br> <br> Step 5: Calculate the total cost<br> Total cost = Area \u00d7 Cost per m\u00b2<br> Total cost = 169 \u00d7 $8 = $1352<br> <br> Step 6: Verify<br> Perimeter = 4 \u00d7 13 = 52 m \u2713<br> <br> Answer: The total cost of painting the billboard is $1352","3215":"Given: A square room has an area of 81 m\u00b2. Skirting boards cost $12 per metre. Find the total cost of the skirting boards needed for the room.<br> <br> Step 1: Identify the information<br> Area = 81 m\u00b2<br> Cost of skirting boards = $12 per metre<br> <br> Step 2: Use the area formula for a square<br> Area = Side \u00d7 Side<br> 81 = Side\u00b2<br> <br> Step 3: Solve for side<br> Side = \u221a81 = 9 m<br> <br> Step 4: Calculate the perimeter<br> Perimeter = 4 \u00d7 Side<br> Perimeter = 4 \u00d7 9 = 36 m<br> <br> Step 5: Calculate the total cost<br> Total cost = Perimeter \u00d7 Cost per metre<br> Total cost = 36 \u00d7 $12 = $432<br> <br> Step 6: Verify<br> Area = 9 \u00d7 9 = 81 m\u00b2 \u2713<br> <br> Answer: The total cost of the skirting boards needed for the room is $432","3218":"Given: A square tablecloth has an area of 324 cm\u00b2. Lace costing $0.50 per cm is sewn around its edge. Find the total cost of the lace.<br> <br> Step 1: Identify the information<br> Area = 324 cm\u00b2<br> Cost of lace = $0.50 per cm<br> <br> Step 2: Use the area formula for a square<br> Area = Side \u00d7 Side<br> 324 = Side\u00b2<br> <br> Step 3: Solve for side<br> Side = \u221a324 = 18 cm<br> <br> Step 4: Calculate the perimeter<br> Perimeter = 4 \u00d7 Side<br> Perimeter = 4 \u00d7 18 = 72 cm<br> <br> Step 5: Calculate the total cost<br> Total cost = Perimeter \u00d7 Cost per cm<br> Total cost = 72 \u00d7 $0.50 = $36<br> <br> Step 6: Verify<br> Area = 18 \u00d7 18 = 324 cm\u00b2 \u2713<br> <br> Answer: The total cost of the lace is $36","3224":"Given: A square patio has an area of 324 m\u00b2. The owner wants to build a fence around it at $12 per metre. Find the cost of the fence.<br> <br> Step 1: Find the side length of the patio<br> Area of square = Side \u00d7 Side<br> 324 = Side \u00d7 Side<br> Side = \u221a324 = 18 m<br> <br> Step 2: Find the perimeter of the patio<br> Perimeter = 4 \u00d7 Side<br> Perimeter = 4 \u00d7 18 = 72 m<br> <br> Step 3: Calculate the cost of the fence<br> Cost = Perimeter \u00d7 Price per metre<br> Cost = 72 \u00d7 $12 = $864<br> <br> Answer: The fence will cost $864","3277":"Visitors over the weekend = 600 + 550 = 1150.  <br>Revenue = 1150 x 0.02 = $23","3283":"Given: Electricity costs $0.25 per kWh. What was the total electricity bill for the first quarter (Jan\u2013Mar)?<br><br>\n\nStep 1: Identify the monthly consumption from the graph<br>\nJan: 280 kWh<br>\nFeb: 240 kWh<br>\nMar: 200 kWh<br><br>\n\nStep 2: Calculate the total consumption<br>\nTotal consumption = Jan + Feb + Mar<br>\nTotal consumption = 280 + 240 + 200<br>\nTotal consumption = 720 kWh<br><br>\n\nStep 3: Apply the cost per kWh<br>\nCost per kWh = $0.25<br>\nTotal bill = Total consumption \u00d7 Cost per kWh<br>\nTotal bill = 720 \u00d7 0.25<br><br>\n\nStep 4: Perform the calculation<br>\n720 \u00d7 0.25 = 720 \u00d7 \\frac{1}{4} = \\frac{720}{4} = 180<br><br>\n\nStep 5: Verify<br>\nCheck: 180 \u00f7 0.25 = 720 kWh \u2713<br>\nCheck: 280 + 240 + 200 = 720 kWh \u2713<br><br>\n\nAnswer: The total electricity bill for the first quarter (Jan\u2013Mar) = $180","3287":"Given: The government offers a rebate of $10 for every month where consumption stays below 200 kWh. How much rebate did the household earn over the 8 months?<br><br>\n\nStep 1: Identify the monthly consumption from the graph<br>\nJan: 280 kWh<br>\nFeb: 240 kWh<br>\nMar: 200 kWh<br>\nApr: 160 kWh<br>\nMay: 180 kWh<br>\nJun: 220 kWh<br>\nJul: 300 kWh<br>\nAug: 320 kWh<br><br>\n\nStep 2: Determine which months qualify for rebate (below 200 kWh)<br>\nJan: 280 kWh \u2192 280 \u2265 200 \u2192 No rebate \u2717<br>\nFeb: 240 kWh \u2192 240 \u2265 200 \u2192 No rebate \u2717<br>\nMar: 200 kWh \u2192 200 \u2265 200 \u2192 No rebate \u2717<br>\nApr: 160 kWh \u2192 160 < 200 \u2192 Qualifies for rebate \u2713<br>\nMay: 180 kWh \u2192 180 < 200 \u2192 Qualifies for rebate \u2713<br>\nJun: 220 kWh \u2192 220 \u2265 200 \u2192 No rebate \u2717<br>\nJul: 300 kWh \u2192 300 \u2265 200 \u2192 No rebate \u2717<br>\nAug: 320 kWh \u2192 320 \u2265 200 \u2192 No rebate \u2717<br><br>\n\nStep 3: Count the months that qualify for rebate<br>\nMonths that qualify: Apr, May<br>\nNumber of months = 2<br><br>\n\nStep 4: Calculate total rebate<br>\nRebate per month = $10<br>\nTotal rebate = Number of qualifying months \u00d7 Rebate per month<br>\nTotal rebate = 2 \u00d7 $10 = $20<br><br>\n\nStep 5: Verify<br>\nApr: 160 kWh < 200 kWh \u2713<br>\nMay: 180 kWh < 200 kWh \u2713<br>\n2 months \u00d7 $10 = $20 \u2713<br><br>\n\nAnswer: The household earned a total rebate of $20 over the 8 months","3294":"Given: If Apples sell for $3 per kg, what was the total revenue from Apples over the 3 days?<br><br>\n\nStep 1: Identify the known values for Apples from the table<br>\nMonday: 45 kg<br>\nTuesday: ? kg (unknown)<br>\nWednesday: 38 kg<br>\nTotal Sold: 120 kg<br><br>\n\nStep 2: Use the Total Sold to find the revenue<br>\nSince we already know the Total Sold = 120 kg, we can calculate revenue directly.<br><br>\n\nStep 3: Calculate total revenue<br>\nPrice per kg = $3<br>\nTotal revenue = Total Sold \u00d7 Price per kg<br>\nTotal revenue = 120 \u00d7 $3<br>\nTotal revenue = $360<br><br>\n\nStep 4: Verify<br>\nWe can also verify by finding Tuesday's sales:<br>\nTuesday = Total Sold \u2212 Monday \u2212 Wednesday<br>\nTuesday = 120 \u2212 45 \u2212 38 = 37 kg<br><br>\nTotal kg = 45 + 37 + 38 = 120 kg \u2713<br>\nTotal revenue = 120 \u00d7 $3 = $360 \u2713<br><br>\n\nAnswer: The total revenue from Apples over the 3 days = $360","3296":"Given: If \\(\\frac{2}{5}\\) of the Grapes sold on Monday were seedless grapes priced at $4 per kg and the rest were regular grapes priced at 2.50 dollars per kg, what was the total revenue from Grapes on Monday?<br><br>\n\nStep 1: Identify the total Grapes sold on Monday from the table<br>\nMonday's Grapes = 30 kg<br><br>\n\nStep 2: Calculate the kg of seedless grapes sold<br>\nSeedless grapes = \\(\\frac{2}{5}\\) \u00d7 Monday's total<br>\nSeedless grapes = \\(\\frac{2}{5}\\) \u00d7 30<br>\nSeedless grapes = \\(\\frac{60}{5}\\)<br>\nSeedless grapes = 12 kg<br><br>\n\nStep 3: Calculate the kg of regular grapes sold<br>\nRegular grapes = Total \u2212 Seedless grapes<br>\nRegular grapes = 30 \u2212 12<br>\nRegular grapes = 18 kg<br><br>\n\nAlternatively:<br>\nRegular grapes = \\(\\frac{3}{5}\\) \u00d7 30 = \\(\\frac{90}{5}\\) = 18 kg<br><br>\n\nStep 4: Calculate revenue from each type<br>\nSeedless grapes revenue = 12 \u00d7 $4 = $48<br>\nRegular grapes revenue = 18 \u00d7 $2.50 = $45<br><br>\n\nStep 5: Calculate total revenue<br>\nTotal revenue = Seedless revenue + Regular revenue<br>\nTotal revenue = $48 + $45<br>\nTotal revenue = $93<br><br>\n\nStep 6: Verify<br>\nSeedless: \\(\\frac{2}{5}\\) \u00d7 30 = 12 kg \u2713<br>\nRegular: \\(\\frac{3}{5}\\) \u00d7 30 = 18 kg \u2713<br>\n12 + 18 = 30 kg \u2713<br>\nRevenue: (12 \u00d7 4) + (18 \u00d7 2.5) = 48 + 45 = $93 \u2713<br><br>\n\nAnswer: The total revenue from Grapes on Monday = $93","3297":"Given: The household pays a tiered electricity rate: <br>$0.20 per kWh for the first 200 kWh and <br>$0.35 per kWh for any consumption above 200 kWh. What was the total electricity bill for July and August combined?<br><br>\n\nStep 1: Identify the consumption for July and August from the graph<br>\nJuly: 300 kWh<br>\nAugust: 320 kWh<br><br>\n\nStep 2: Calculate the bill for July<br>\nFirst 200 kWh: 200 \u00d7 <span><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>0.20<\/mn><mo>=<\/mo><\/mrow><annotation encoding=\"application\/x-tex\">0.20 = <\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em;\"><\/span><span class=\"mord\">0.20<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em;\"><\/span><span class=\"mrel\">=<\/span><\/span><\/span><\/span><\/span>40<br>\nConsumption above 200 kWh: 300 \u2212 200 = 100 kWh<br>\nAbove 200 kWh: 100 \u00d7 <span><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>0.35<\/mn><mo>=<\/mo><\/mrow><annotation encoding=\"application\/x-tex\">0.35 = <\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em;\"><\/span><span class=\"mord\">0.35<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em;\"><\/span><span class=\"mrel\">=<\/span><\/span><\/span><\/span><\/span>35<br>\nJuly bill = <span><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>40<\/mn><mo>+<\/mo><\/mrow><annotation encoding=\"application\/x-tex\">40 + <\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7278em; vertical-align: -0.0833em;\"><\/span><span class=\"mord\">40<\/span><span class=\"mord\">+<\/span><\/span><\/span><\/span><\/span>35 = $75<br><br>\n\nStep 3: Calculate the bill for August<br>\nFirst 200 kWh: 200 \u00d7 <span><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>0.20<\/mn><mo>=<\/mo><\/mrow><annotation encoding=\"application\/x-tex\">0.20 = <\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em;\"><\/span><span class=\"mord\">0.20<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em;\"><\/span><span class=\"mrel\">=<\/span><\/span><\/span><\/span><\/span>40<br>\nConsumption above 200 kWh: 320 \u2212 200 = 120 kWh<br>\nAbove 200 kWh: 120 \u00d7 <span><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>0.35<\/mn><mo>=<\/mo><\/mrow><annotation encoding=\"application\/x-tex\">0.35 = <\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em;\"><\/span><span class=\"mord\">0.35<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em;\"><\/span><span class=\"mrel\">=<\/span><\/span><\/span><\/span><\/span>42<br>\nAugust bill = <span><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>40<\/mn><mo>+<\/mo><\/mrow><annotation encoding=\"application\/x-tex\">40 + <\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7278em; vertical-align: -0.0833em;\"><\/span><span class=\"mord\">40<\/span><span class=\"mord\">+<\/span><\/span><\/span><\/span><\/span>42 = $82<br><br>\n\nStep 4: Calculate the combined bill<br>\nTotal bill = July bill + August bill<br>\nTotal bill = <span><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>75<\/mn><mo>+<\/mo><\/mrow><annotation encoding=\"application\/x-tex\">75 + <\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7278em; vertical-align: -0.0833em;\"><\/span><span class=\"mord\">75<\/span><span class=\"mord\">+<\/span><\/span><\/span><\/span><\/span>82<br>\nTotal bill = $157<br><br>\n\nStep 5: Verify<br>\nJuly: (200 \u00d7 0.20) + (100 \u00d7 0.35) = 40 + 35 = $75 \u2713<br>\nAugust: (200 \u00d7 0.20) + (120 \u00d7 0.35) = 40 + 42 = $82 \u2713<br>\nCombined: 75 + 82 = $157 \u2713<br><br>\n\nAnswer: The total electricity bill for July and August combined = $157","3340":"Step 1:  Find how many rental hours. From 8pm to 8am the next day = 12 hours.\n<br>Step 2:  12 hours rental = 8 hours + 4 hours rental = 20 + 10 = $30","3355":"<br>Total evaporation over 60 days:  60 \u00d7 2.5 = 150 cm total water loss\n\n<br>Option A: Refill every 20 cm drop\n<br>- Number of refills: 150 \u00f7 20 = 7.5 \u2192 8 refills\n<br>- Cost per refill: $15 + (20 \u00d7 $0.50) = $15 + $10 = $25\n<br>- Total cost: 8 \u00d7 $25 = $200\n<br>\n<br>Option B: Refill every 40 cm drop\n<br>- Number of refills: 150 \u00f7 40 = 3.75 \u2192 4 refills\n<br>- Cost per refill: $15 + (40 \u00d7 $0.50) = $15 + $20 = $35\n<br>- Total cost: 4 \u00d7 $35 = $140\n<br>\n<br>Difference: $200 \u2212 $140 = $60 more for frequent (20 cm) refills","3357":"<br>- Week 2 price: $1.90 per litre\n<br>- Week 6 price: $2.20 per litre\n<br>\n<br>- Week 2 cost: 45 \u00d7 1.90 = $85.50\n<br>- Week 6 cost: 45 \u00d7 2.20 = $99.00\n<br>\n<br>- 99.00 \u2212 85.50 = $13.50 more","3358":"<br>- Week 1 price: $1.85 per litre\n<br>- Week 6 price: $2.20 per litre\n<br>\n<br>- Week 1 cost: 200 \u00d7 1.85 = $370.00\n<br>- Week 6 cost: 200 \u00d7 2.20 = $440.00\n<br>\n<br>- Difference: 440.00 - 370.00 = $70.00 saved by buying in Week 1","3359":"Identify expensive weeks (price > $2.10):\n<br>- Week 6: $2.20 \u2713\n<br>- Week 7: $2.15 \u2713\n<br>- Week 8: $2.25 \u2713\n\n<br><br>Calculate extra cost per week:\n<br>- Week 6: 40 \u00d7 (2.20 \u2212 2.10) = 40 \u00d7 0.10 = $4.00\n<br>- Week 7: 40 \u00d7 (2.15 \u2212 2.10) = 40 \u00d7 0.05 = $2.00\n<br>- Week 8: 40 \u00d7 (2.25 \u2212 2.10) = 40 \u00d7 0.15 = $6.00\n\n<br><br>Total extra paid: 4.00 + 2.00 + 6.00 = $12.00","3362":"Looking at the Student's Savings Account Balance graph:\n\n<br>Identify months with decreases:\n<br>- March to April: 1,700 \u2192 1,550 = withdrew $150\n<br>- July to August: 2,350 \u2192 2,150 = withdrew $200\n<br>\n<br>Total withdrawn: 150 + 200 = $350\n<br>\n<br>Calculate total deposits for the year:\n<br>- Year-end balance: $3,500\n<br>- Starting balance: $1,200\n<br>- Net increase: 3,500 \u2212 1,200 = $2,300\n<br>- Total deposits: 2,300 + 350 (withdrawals) = $2,650\n<br>\n<br>Fraction of withdrawals to deposits:\n<br>350 \u00f7 2,650 = 35\/265 = 7\/53","3518":"Given:<br>\nOriginal price = $250<br>\nFirst discount = 20%<br>\nSecond discount = 15% (on discounted price)<br>\n<br>\nStep 1: Calculate price after first discount<br>\n= $250 \u00d7 0.80<br>\n= $200<br>\n<br>\nStep 2: Calculate price after second discount<br>\n= $200 \u00d7 0.85<br>\n= $170<br>\n<br>\nStep 3: Check if same as 35% discount<br>\n35% discount = $250 \u00d7 0.65 = $162.50<br>\nSuccessive discounts = 20% + (15% \u00d7 80%) = 20% + 12% = 32%<br>\n32% \u2260 35%<br>\n<br>\nAnswer: $170; No, it is not the same as 35% discount","3519":"Given:<br>\nOriginal price = $1800<br>\nShop A discount = 25%<br>\nShop B discounts = 15% then 12%<br>\n<br>\nStep 1: Calculate Shop A price<br>\n= $1800 \u00d7 0.75<br>\n= $1350<br>\n<br>\nStep 2: Calculate Shop B price after first discount<br>\n= $1800 \u00d7 0.85<br>\n= $1530<br>\n<br>\nStep 3: Calculate Shop B price after second discount<br>\n= $1530 \u00d7 0.88<br>\n= $1346.40<br>\n<br>\nStep 4: Compare prices<br>\nDifference = 1350 \u2212 1346.40<br>\n= $3.60<br>\n<br>\nAnswer: Shop B is cheaper by $3.60","3520":"Given:<br>\nDiscounted price = $455<br>\nDiscount = 30%<br>\n<br>\nStep 1: Find percentage Kevin paid<br>\n= 100% \u2212 30%<br>\n= 70%<br>\n<br>\nStep 2: Calculate original price<br>\n70% of original = $455<br>\n1% of original = $455 \u00f7 70 = $6.50<br>\n100% of original = $6.50 \u00d7 100 = $650<br>\n<br>\nStep 3: Verify<br>\n30% of $650 = $195<br>\n$650 \u2212 $195 = $455 \u2713<br>\n<br>\nAnswer: $650","3521":"Given:<br>\nBill before charges = $127<br>\nService charge = 10%<br>\nGST = 9%<br>\n<br>\nStep 1: Calculate service charge<br>\n= $127 \u00d7 0.10<br>\n= $12.70<br>\n<br>\nStep 2: Calculate subtotal after service charge<br>\n= $127 + $12.70<br>\n= $139.70<br>\n<br>\nStep 3: Calculate GST on subtotal<br>\n= $139.70 \u00d7 0.09<br>\n= $12.573<br>\n= $12.57 (rounded)<br>\n<br>\nStep 4: Calculate final bill<br>\n= $139.70 + $12.57<br>\n= $152.27<br>\n<br>\nNote: Using exact calculation:<br>\n= $127 \u00d7 1.10 \u00d7 1.09<br>\n= $152.273<br>\n= $152.27<br>\n<br>\nAnswer: $152.27","3523":"Given:<br>\nShop A: Price = $1500, Discount = 20%, GST = 9%<br>\nShop B: Price = $1400, Discount = 10%, GST = 9%<br>\n<br>\nStep 1: Calculate Shop A final price<br>\nDiscounted price = $1500 \u00d7 0.80 = $1200<br>\nWith GST = $1200 \u00d7 1.09 = $1308<br>\n<br>\nStep 2: Calculate Shop B final price<br>\nDiscounted price = $1400 \u00d7 0.90 = $1260<br>\nWith GST = $1260 \u00d7 1.09 = $1373.40<br>\n<br>\nStep 3: Compare prices<br>\nShop A = $1308<br>\nShop B = $1373.40<br>\nDifference = $1373.40 \u2212 $1308 = $65.40<br>\n<br>\nAnswer: Shop A is cheaper by $65.40","3526":"Given:<br>\nOriginal price = $4000<br>\nFirst discount = 20%<br>\nCash discount = 10%<br>\nGST = 9%<br>\nInstalment period = 12 months<br>\nAnnual interest = 5%<br>\n<br>\nStep 1: Calculate price after first discount<br>\n= $4000 \u00d7 0.80<br>\n= $3200<br>\n<br>\nStep 2: Calculate price after cash discount<br>\n= $3200 \u00d7 0.90<br>\n= $2880<br>\n<br>\nStep 3: Calculate GST-inclusive price<br>\n= $2880 \u00d7 1.09<br>\n= $3139.20<br>\n<br>\nStep 4: Calculate interest for 1 year<br>\n= $3139.20 \u00d7 0.05<br>\n= $156.96<br>\n<br>\nStep 5: Calculate total payment<br>\n= 3139.20 + 156.96<br>\n= $3296.16<br>\n<br>\nStep 6: Calculate monthly payment<br>\n= $3296.16 \u00f7 12<br>\n= $274.68<br>\n<br>\nAnswer: $274.68","3527":"Given:<br>\nFinal price (after discount and GST) = $1635<br>\nDiscount = 25%<br>\nGST = 9%<br>\n<br>\nStep 1: Work backwards from final price<br>\nFinal price = Original \u00d7 0.75 \u00d7 1.09<br>\n$1635 = Original \u00d7 0.8175<br>\n<br>\nStep 2: Calculate original price<br>\nOriginal = $1635 \u00f7 0.8175<br>\n= $2000<br>\n<br>\nStep 3: Verify<br>\nDiscounted price = 2000 \u00d7 0.75 = <span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7278em; vertical-align: -0.0833em;\"><\/span><span class=\"mord\">2000<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em;\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em;\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6444em;\"><\/span><span class=\"mord\">0.75<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em;\"><\/span><span class=\"mrel\">=<\/span><\/span><\/span>1500<br>\nWith GST = 1500 \u00d7 1.09 = $1635 \u2713<br>\n<br>\nAnswer: $2000","3528":"Given:<br>\nDeposit = $25000<br>\nDeposit interest = 4% compound per year for 2 years<br>\nCar price = $65000 (GST-inclusive)<br>\nLoan period = 3 years<br>\nLoan interest = 5% simple per year<br>\n<br>\nStep 1: Calculate deposit with compound interest<br>\nYear 1: 25000 \u00d7 1.04 = $26000<br>\nYear 2: 26000 \u00d7 1.04 = $27040<br>\n<br>\nStep 2: Calculate loan amount<br>\n= 65000 \u2212 27040<br>\n= $37960<br>\n<br>\nStep 3: Calculate interest on loan<br>\n= $37960 \u00d7 0.05 \u00d7 3<br>\n= $5694<br>\n<br>\nStep 4: Calculate total loan repayment<br>\n= 37960 + 5694<br>\n= $43654<br>\n<br>\nStep 5: Calculate total paid for car<br>\n= 27040 + 43654<br>\n= $70694<br>\n<br>\nAnswer: $70694","3529":"Given:<br>\nGST-inclusive price = $2180<br>\nGST = 9%<br>\nDiscount = 20% (on price before GST)<br>\nInstalment period = 6 months<br>\nInterest = 5%<br>\n<br>\nStep 1: Calculate price before GST<br>\n109% = $2180<br>\n100% = 2180 \u00f7 1.09 = 2000<br>\n<br>\nStep 2: Calculate discounted price<br>\n= $2000 \u00d7 0.80<br>\n= $1600<br>\n<br>\nStep 3: Add GST to discounted price<br>\n= $1600 \u00d7 1.09<br>\n= $1744<br>\n<br>\nStep 4: Calculate interest<br>\n= $1744 \u00d7 0.05<br>\n= $87.20<br>\n<br>\nStep 5: Calculate total payment<br>\n= 1744 + 87.20<br>\n= $1831.20<br>\n<br>\nStep 6: Calculate monthly instalment<br>\n= $1831.20 \u00f7 6<br>\n= $305.20<br>\n<br>\nAnswer: $305.20","3530":"Given:<br>\nTotal savings = $60000<br>\nFund A: 50% of savings at 6% interest<br>\nFund B: 30% of savings at 5% interest<br>\nFund C: 20% of savings at 4% interest<br>\nTime = 2 years<br>\nTax = 10%<br>\n<br>\nStep 1: Calculate amount in each fund<br>\nFund A = 60000 \u00d7 0.50 = $30000<br>\nFund B = 60000 \u00d7 0.30 = $18000<br>\nFund C = 60000 \u00d7 0.20 = $12000<br>\n<br>\nStep 2: Calculate interest from each fund<br>\nFund A interest = 30000 \u00d7 0.06 \u00d7 2 = $3600<br>\nFund B interest = 18000 \u00d7 0.05 \u00d7 2 = $1800<br>\nFund C interest = 12000 \u00d7 0.04 \u00d7 2 = $960<br>\n<br>\nStep 3: Calculate total interest<br>\n= 3600 + 1800 + 960<br>\n= $6360<br>\n<br>\nStep 4: Calculate tax<br>\n= $6360 \u00d7 0.10<br>\n= $636<br>\n<br>\nStep 5: Calculate net interest<br>\n= 6360 \u2212 636<br>\n= $5724<br>\n<br>\nAnswer: $5724","3531":"Given:<br>\nOriginal price = $3000<br>\nTrade-in value = $400<br>\nGST = 9%<br>\nDown payment = 20%<br>\nLoan period = 24 months = 2 years<br>\nAnnual interest = 6%<br>\n<br>\nStep 1: Calculate price after trade-in<br>\n= 3000 \u2212 400<br>\n= $2600<br>\n<br>\nStep 2: Calculate GST-inclusive price<br>\n= $2600 \u00d7 1.09<br>\n= $2834<br>\n<br>\nStep 3: Calculate down payment<br>\n= $2834 \u00d7 0.20<br>\n= $566.80<br>\n<br>\nStep 4: Calculate loan amount<br>\n= 2834 \u2212 566.80<br>\n= $2267.20<br>\n<br>\nStep 5: Calculate interest for 2 years<br>\n= $2267.20 \u00d7 0.06 \u00d7 2<br>\n= $272.064<br>\n= $272.06 (rounded)<br>\n<br>\nStep 6: Calculate total loan repayment<br>\n= 2267.20 + 272.06<br>\n= $2539.26<br>\n<br>\nStep 7: Calculate monthly instalment<br>\n= $2539.26 \u00f7 24<br>\n= $105.80 (rounded)<br>\n<br>\nAnswer: $105.80","3533":"Given:<br>\nDeposit = $10000<br>\nTarget amount = $10800<br>\nTime = 2 years<br>\nInterest rate = 4% simple per year<br>\nAnnual maintenance fee = $80<br>\n<br>\nStep 1: Calculate interest earned<br>\n= $10000 \u00d7 0.04 \u00d7 2<br>\n= $800<br>\n<br>\nStep 2: Calculate total maintenance fees<br>\n= $80 \u00d7 2<br>\n= $160<br>\n<br>\nStep 3: Calculate final amount<br>\n= 10000 + 800 \u2212 160<br>\n= $10640<br>\n<br>\nStep 4: Compare with target<br>\n10640 < 10800<br>\nShortfall = 10800 \u2212 10640 = $160<br>\n<br>\nAnswer: No, she will be short by $160","3535":"Given:<br>\nCost price = $500 per tablet<br>\nMark-up = 60%<br>\nDiscount = 25%<br>\nNumber sold = 40<br>\n<br>\nStep 1: Calculate marked-up price<br>\n= $500 \u00d7 1.60<br>\n= $800<br>\n<br>\nStep 2: Calculate discounted price<br>\n= $800 \u00d7 0.75<br>\n= $600<br>\n<br>\nStep 3: Calculate profit per tablet<br>\n= 600 \u2212 500<br>\n= $100<br>\n<br>\nStep 4: Calculate total profit for 40 tablets<br>\n= $100 \u00d7 40<br>\n= $4000<br>\n<br>\nAnswer: $4000","3536":"Given:<br>\nLoan amount = $24000<br>\nBank A: 5% simple interest for 2 years (24 months)<br>\nBank B: 4% simple interest for 3 years (36 months)<br>\nProcessing fee = 2% for both<br>\n<br>\nStep 1: Calculate processing fee<br>\n= $24000 \u00d7 0.02<br>\n= $480<br>\n<br>\nStep 2: Calculate Bank A total cost<br>\nInterest = 24000 \u00d7 0.05 \u00d7 2 = $2400<br>\nTotal = 24000 + 2400 + 480 = $26880<br>\n<br>\nStep 3: Calculate Bank B total cost<br>\nInterest = 24000 \u00d7 0.04 \u00d7 3 = $2880<br>\nTotal = 24000 + 2880 + 480 = $27360<br>\n<br>\nStep 4: Compare total costs<br>\nBank A = $26880<br>\nBank B = $27360<br>\nDifference = 27360 \u2212 26880 = $480<br>\nBank A is cheaper<br>\n<br>\nStep 5: Calculate monthly instalment for Bank A<br>\n= $26880 \u00f7 24<br>\n= $1120<br>\n<br>\nAnswer: Bank A is cheaper by $480; Monthly instalment = 1120 dollars","3537":"Given:<br>\nPrice with GST = $1635<br>\nGST rate = 9%<br>\n<br>\nStep 1: Find percentage of GST-inclusive price<br>\nPrice with GST = 100% + 9% = 109%<br>\n<br>\nStep 2: Calculate price before GST<br>\n109% = $1635<br>\n1% = 1635 \u00f7 109 = $15<br>\n100% = 15 \u00d7 100 = $1500<br>\n<br>\nStep 3: Verify<br>\nGST = 1500 \u00d7 0.09 = $135<br>\nPrice with GST = 1500 + 135 = $1635 \u2713<br>\n<br>\nAnswer: $1500","3538":"Given:<br>\nBank A: Principal = $8000, Rate = 2.5% per year<br>\nBank B: Principal = $12000, Rate = 1.8% per year<br>\nTime = 3 years<br>\n<br>\nStep 1: Calculate interest from Bank A<br>\n= $8000 \u00d7 0.025 \u00d7 3<br>\n= $200 \u00d7 3<br>\n= $600<br>\n<br>\nStep 2: Calculate interest from Bank B<br>\n= $12000 \u00d7 0.018 \u00d7 3<br>\n= $216 \u00d7 3<br>\n= $648<br>\n<br>\nStep 3: Calculate total interest<br>\n= 600 + 648<br>\n= $1248<br>\n<br>\nAnswer: $1248","3539":"Given:<br>\nInterest rate = 4% per year<br>\nTime = 5 years<br>\nInterest earned = $600<br>\n<br>\nStep 1: Use simple interest formula<br>\nInterest = Principal \u00d7 Rate \u00d7 Time<br>\n$600 = Principal \u00d7 0.04 \u00d7 5<br>\n$600 = Principal \u00d7 0.20<br>\n<br>\nStep 2: Calculate principal<br>\nPrincipal = $600 \u00f7 0.20<br>\n= $3000<br>\n<br>\nStep 3: Verify<br>\nInterest = $3000 \u00d7 0.04 \u00d7 5<br>\n= $120 \u00d7 5<br>\n= $600 \u2713<br>\n<br>\nAnswer: $3000","3540":"Given:<br>\nOriginal price = $2000<br>\nDiscount = 20%<br>\nGST = 9%<br>\nAnnual interest = 5%<br>\nNumber of instalments = 12<br>\n<br>\nStep 1: Calculate discounted price<br>\n= $2000 \u00d7 0.80<br>\n= $1600<br>\n<br>\nStep 2: Calculate GST-inclusive price<br>\n= $1600 \u00d7 1.09<br>\n= $1744<br>\n<br>\nStep 3: Calculate interest for 1 year<br>\n= $1744 \u00d7 0.05<br>\n= $87.20<br>\n<br>\nStep 4: Calculate total amount to pay<br>\n= 1744 + 87.20<br>\n= $1831.20<br>\n<br>\nStep 5: Calculate monthly instalment<br>\n= $1831.20 \u00f7 12<br>\n= $152.60<br>\n<br>\nAnswer: $152.60","3541":"Given:<br>\nOriginal price = $1200<br>\nDiscount = 15%<br>\nGST = 9%<br>\n<br>\nStep 1: Calculate discounted price<br>\n= $1200 \u00d7 0.85<br>\n= $1020<br>\n<br>\nStep 2: Calculate GST<br>\n= $1020 \u00d7 0.09<br>\n= $91.80<br>\n<br>\nStep 3: Calculate final price<br>\n= 1020 + 91.80<br>\n= $1111.80<br>\n<br>\nAnswer: $1111.80","3542":"Given:<br>\nOriginal price = $2000<br>\nDiscount = 25%<br>\nGST = 9%<br>\nInterest = 5% (for 6 months)<br>\n<br>\nStep 1: Calculate discounted price<br>\n= $2000 \u00d7 0.75<br>\n= $1500<br>\n<br>\nStep 2: Calculate GST-inclusive price<br>\n= $1500 \u00d7 1.09<br>\n= $1635<br>\n<br>\nStep 3: Calculate interest<br>\n= $1635 \u00d7 0.05<br>\n= $81.75<br>\n<br>\nStep 4: Calculate total payment<br>\n= 1635 + 81.75<br>\n= $1716.75<br>\n<br>\nAnswer: $1716.75","3543":"Given:<br>\nOriginal price = $2500<br>\nFirst discount = 20%<br>\nMember discount = 10% (on discounted price)<br>\nGST = 8%<br>\n<br>\nStep 1: Calculate price after first discount<br>\n= $2500 \u00d7 0.80<br>\n= $2000<br>\n<br>\nStep 2: Calculate price after member discount<br>\n= $2000 \u00d7 0.90<br>\n= $1800<br>\n<br>\nStep 3: Calculate GST<br>\n= $1800 \u00d7 0.08<br>\n= $144<br>\n<br>\nStep 4: Calculate final price<br>\n= 1800 + 144<br>\n= $1944<br>\n<br>\nAnswer: $1944","3544":"Given:<br>\nGST-inclusive price = $1090<br>\nGST = 9%<br>\nMark-up = 25%<br>\n<br>\nStep 1: Calculate price before GST<br>\n109% = $1090<br>\n1% = 1090 \u00f7 109 = 10<br>\n100% = 100 x 10 = $1000\n<br><br>\n\nStep 2: Calculate cost price (before mark-up)<br>\n125% of cost price = $1000<br>\n1% = 1000 \u00f7 125 = $8<br>\n100% = 100 x 8 = $800 <br>\n<br>\nStep 3: Verify<br>\nCost price = $800<br>\nMark-up = 800 \u00d7 0.25 = $200<br>\nPrice before GST = 800 + 200 = $1000 \u2713<br>\nGST = 1000 \u00d7 0.09 = $90<br>\nGST-inclusive price = 1000 + 90 = $1090 \u2713<br>\n<br>\nAnswer: Price before GST = $1000; Cost price = 800 dollars","3545":"Given:<br>\nDeposit = $16000<br>\nDeposit interest = 4% simple per year for 2 years<br>\nCar price = $48000<br>\nInstalment period = 24 months (2 years)<br>\nInstalment interest = 5% per year<br>\n<br>\nStep 1: Calculate deposit with interest<br>\nInterest = 16000 \u00d7 0.04 \u00d7 2 = $1280<br>\nTotal = 16000 + 1280 = $17280<br>\n<br>\nStep 2: Calculate remaining amount for car<br>\n= 48000 \u2212 17280<br>\n= $30720<br>\n<br>\nStep 3: Calculate interest on loan for 2 years<br>\n= $30720 \u00d7 0.05 \u00d7 2<br>\n= $3072<br>\n<br>\nStep 4: Calculate total loan repayment<br>\n= 30720 + 3072<br>\n= $33792<br>\n<br>\nStep 5: Calculate monthly instalment<br>\n= $33792 \u00f7 24<br>\n= $1408<br>\n<br>\nAnswer: $1408","3546":"Given:<br>\nShop A: Price = $950, Discount = 12%, GST = 9%<br>\nShop B: Price = 900 dollars (GST-inclusive), Voucher = 50 dollars <br>\n<br>\nStep 1: Calculate Shop A discounted price<br>\n= $950 \u00d7 0.88<br>\n= $836<br>\n<br>\nStep 2: Calculate Shop A price with GST<br>\n= $836 \u00d7 1.09<br>\n= $911.24<br>\n<br>\nStep 3: Calculate Shop B final price<br>\n= 900 \u2212 50<br>\n= $850<br>\n<br>\nStep 4: Compare prices<br>\nShop A = $911.24<br>\nShop B = $850<br>\nDifference = 911.24 \u2212 850 = $61.24<br>\n<br>\nAnswer: Shop B is cheaper by $61.24","3547":"Given:<br>\nOriginal bill = $200<br>\nMember discount = 10%<br>\nService charge = 10%<br>\nGST = 8%<br>\n<br>\nStep 1: Calculate price after member discount<br>\n= $200 \u00d7 0.90<br>\n= $180<br>\n<br>\nStep 2: Calculate service charge<br>\n= $180 \u00d7 0.10<br>\n= $18<br>\n<br>\nStep 3: Calculate subtotal after service charge<br>\n= 180 + 18<br>\n= $198<br>\n<br>\nStep 4: Calculate GST<br>\n= $198 \u00d7 0.08<br>\n= $15.84<br>\n<br>\nStep 5: Calculate final bill<br>\n= 198 + 15.84<br>\n= $213.84<br>\n<br>\nAnswer: $213.84","3548":"Given:<br>\nOriginal price = $10000<br>\nLoyalty discount = 10%<br>\nGST = 9%<br>\nDown payment = 20%<br>\nLoan period = 2 years = 24 months<br>\nAnnual interest = 5%<br>\n<br>\nStep 1: Calculate discounted price<br>\n= $10000 \u00d7 0.90<br>\n= $9000<br>\n<br>\nStep 2: Calculate GST-inclusive price<br>\n= $9000 \u00d7 1.09<br>\n= $9810<br>\n<br>\nStep 3: Calculate down payment<br>\n= $9810 \u00d7 0.20<br>\n= $1962<br>\n<br>\nStep 4: Calculate loan amount<br>\n= 9810 \u2212 1962<br>\n= $7848<br>\n<br>\nStep 5: Calculate interest for 2 years<br>\n= $7848 \u00d7 0.05 \u00d7 2<br>\n= $784.80<br>\n<br>\nStep 6: Calculate total loan repayment<br>\n= 7848 + 784.80<br>\n= $8632.80<br>\n<br>\nStep 7: Calculate monthly instalment<br>\n= $8632.80 \u00f7 24<br>\n= $359.70<br>\n<br>\nAnswer: $359.70","3570":"Given:<br>\nShop A: Price = $2500, Discount = 20%, GST = 8%<br>\nShop B: Price = $2200, Discount = 10%, GST = 8%<br>\n<br>\nStep 1: Calculate Shop A final price<br>\nDiscounted price = 2500 \u00d7 0.80 = $2000<br>\nWith GST = 2000 \u00d7 1.08 = $2160<br>\n<br>\nStep 2: Calculate Shop B final price<br>\nDiscounted price = 2200 \u00d7 0.90 = 1980<br>\nWith GST = 1980 \u00d7 1.08 = $2138.40<br>\n<br>\nStep 3: Compare prices<br>\nShop A = $2160<br>\nShop B = $2138.40<br>\nDifference = 2160 \u2212 2138.40 = $21.60<br>\n<br>\nAnswer: Shop B is cheaper by $21.60","3571":"Given:<br>\nPrice of sofa = $2545<br>\nTax = 7%<br>\n<br>\nStep 1: Calculate tax amount<br>\n= $2545 \u00d7 0.07<br>\n= $178.15<br>\n<br>\nStep 2: Calculate total price<br>\n= 2545 + 178.15<br>\n= $2723.15<br>\n<br>\nStep 3: Round to nearest dollar<br>\n= $2723<br>\n<br>\nAnswer: $2723","3572":"Given:<br>\nPrice after discount = $288<br>\nDiscount = 40%<br>\n<br>\nStep 1: Find percentage paid<br>\n= 100% \u2212 40%<br>\n= 60%<br>\n<br>\nStep 2: Calculate original price<br>\n60% of original = $288<br>\n1% of original = 288 \u00f7 60 = $4.80<br>\n100% of original = 4.80 \u00d7 100 = $480<br>\n<br>\nStep 3: Verify<br>\nDiscount = 480 \u00d7 0.40 = $192<br>\nPrice after discount = 480 \u2212 192 = $288 \u2713<br>\n<br>\nAnswer: $480","3574":"Given:<br>\nPrice with tax = $165<br>\nTax = 10%<br>\n<br>\nStep 1: Find percentage of tax-inclusive price<br>\nPrice with tax = 100% + 10% = 110%<br>\n<br>\nStep 2: Calculate price before tax<br>\n110% = $165<br>\n1% = 165 \u00f7 110 = $1.50<br>\n100% = 1.50 \u00d7 100 = $150<br>\n<br>\nStep 3: Verify<br>\nTax = $150 \u00d7 0.10 = $15<br>\nPrice with tax = 150 + 15 = $165 \u2713<br>\n<br>\nAnswer: $150","3575":"Given:<br>\nOriginal price = $50<br>\nDiscount = 10%<br>\nTax = 8%<br>\n<br>\nStep 1: Calculate discounted price<br>\n= $50 \u00d7 0.90<br>\n= $45<br>\n<br>\nStep 2: Calculate tax<br>\n= $45 \u00d7 0.08<br>\n= $3.60<br>\n<br>\nStep 3: Calculate final price<br>\n= 45 + 3.60<br>\n= $48.60<br>\n<br>\nAnswer: $48.60","3577":"Given:<br>\nOriginal price = $80<br>\nDiscount = 15%<br>\nSales tax = 6%<br>\n<br>\nStep 1: Calculate discounted price<br>\n= $80 \u00d7 0.85<br>\n= $68<br>\n<br>\nStep 2: Calculate sales tax<br>\n= $68 \u00d7 0.06<br>\n= $4.08<br>\n<br>\nStep 3: Calculate final price<br>\n= 68 + 4.08<br>\n= $72.08<br>\n<br>\nAnswer: $72.08","3578":"Given:<br>\nOriginal price = $60<br>\nDiscount = 25%<br>\nGST = 7%<br>\n<br>\nStep 1: Calculate discounted price<br>\n= $60 \u00d7 0.75<br>\n= $45<br>\n<br>\nStep 2: Calculate GST<br>\n= $45 \u00d7 0.07<br>\n= $3.15<br>\n<br>\nStep 3: Calculate final price<br>\n= 45 + 3.15<br>\n= $48.15<br>\n<br>\nAnswer: $48.15","3579":"Given:<br>\nOriginal price = $1200<br>\nStore X: 20% discount<br>\nStore Y: 10% discount then 15% discount<br>\n<br>\nStep 1: Calculate Store X price<br>\n= $1200 \u00d7 0.80<br>\n= $960<br>\n<br>\nStep 2: Calculate Store Y price after first discount<br>\n= $1200 \u00d7 0.90<br>\n= $1080<br>\n<br>\nStep 3: Calculate Store Y price after second discount<br>\n= $1080 \u00d7 0.85<br>\n= $918<br>\n<br>\nStep 4: Compare prices<br>\nStore X = $960<br>\nStore Y = $918<br>\nDifference = 960 \u2212 918 = $42<br>\n<br>\nAnswer: Store Y has the better deal; You save $42","3580":"Given:<br>\nOriginal price = $1500<br>\nGameWorld: 30% discount<br>\nTechZone: 20% discount then 15% discount<br>\n<br>\nStep 1: Calculate GameWorld price<br>\n= $1500 \u00d7 0.70<br>\n= $1050<br>\n<br>\nStep 2: Calculate TechZone price after first discount<br>\n= $1500 \u00d7 0.80<br>\n= $1200<br>\n<br>\nStep 3: Calculate TechZone price after second discount<br>\n= $1200 \u00d7 0.85<br>\n= $1020<br>\n<br>\nStep 4: Compare prices<br>\nGameWorld = $1050<br>\nTechZone = $1020<br>\nDifference = 1050 \u2212 1020 = $30<br>\n<br>\nAnswer: TechZone offers the lower price by $30","3581":"Given:<br>\nOriginal price = $2000<br>\nBookMart: 35% discount<br>\nReadMore: 25% discount then 18% discount<br>\n<br>\nStep 1: Calculate BookMart price<br>\n= $2000 \u00d7 0.65<br>\n= $1300<br>\n<br>\nStep 2: Calculate ReadMore price after first discount<br>\n= $2000 \u00d7 0.75<br>\n= $1500<br>\n<br>\nStep 3: Calculate ReadMore price after second discount<br>\n= $1500 \u00d7 0.82<br>\n= $1230<br>\n<br>\nStep 4: Compare prices<br>\nBookMart = $1300<br>\nReadMore = $1230<br>\nDifference = 1300 \u2212 1230 = $70<br>\n<br>\nAnswer: ReadMore has the better offer by $70","3582":"Given:<br>\nCost price = $20 per toy car<br>\nMark-up = 50%<br>\nDiscount = 20%<br>\nNumber sold = 30<br>\n<br>\nStep 1: Calculate marked-up price<br>\n= $20 \u00d7 1.50<br>\n= $30<br>\n<br>\nStep 2: Calculate discounted price<br>\n= $30 \u00d7 0.80<br>\n= $24<br>\n<br>\nStep 3: Calculate profit per toy car<br>\n= 24 \u2212 20<br>\n= $4<br>\n<br>\nStep 4: Calculate total profit for 30 toy cars<br>\n= $4 \u00d7 30<br>\n= $120<br>\n<br>\nAnswer: $120","3583":"Given:<br>\nCost price = $8 per storybook<br>\nMark-up = 75%<br>\nDiscount = 30%<br>\nNumber sold = 25<br>\n<br>\nStep 1: Calculate marked-up price<br>\n= $8 \u00d7 1.75<br>\n= $14<br>\n<br>\nStep 2: Calculate discounted price<br>\n= $14 \u00d7 0.70<br>\n= $9.80<br>\n<br>\nStep 3: Calculate profit per storybook<br>\n= 9.80 \u2212 8<br>\n= $1.80<br>\n<br>\nStep 4: Calculate total profit for 25 books<br>\n= $1.80 \u00d7 25<br>\n= $45<br>\n<br>\nAnswer: $45","3584":"Given:<br>\nCost price = $15 per soccer ball<br>\nMark-up = 40%<br>\nDiscount = 15%<br>\nNumber sold = 50<br>\n<br>\nStep 1: Calculate marked-up price<br>\n= $15 \u00d7 1.40<br>\n= $21<br>\n<br>\nStep 2: Calculate discounted price<br>\n= $21 \u00d7 0.85<br>\n= $17.85<br>\n<br>\nStep 3: Calculate profit per soccer ball<br>\n= 17.85 \u2212 15<br>\n= $2.85<br>\n<br>\nStep 4: Calculate total profit for 50 soccer balls<br>\n= $2.85 \u00d7 50<br>\n= $142.50<br>\n<br>\nAnswer: $142.50","3585":"Given:<br>\nGST-inclusive price = $1100<br>\nGST = 10%<br>\nDiscount = 25% (on price before GST)<br>\nInstalment period = 5 months<br>\nInterest = 4%<br>\n<br>\nStep 1: Calculate price before GST<br>\n110% = $1100<br>\n100% = 1100 \u00f7 1.10 = $1000<br>\n<br>\nStep 2: Calculate discounted price<br>\n= $1000 \u00d7 0.75<br>\n= $750<br>\n<br>\nStep 3: Add GST to discounted price<br>\n= $750 \u00d7 1.10<br>\n= $825<br>\n<br>\nStep 4: Calculate interest<br>\n= $825 \u00d7 0.04<br>\n= $33<br>\n<br>\nStep 5: Calculate total payment<br>\n= 825 + 33<br>\n= $858<br>\n<br>\nStep 6: Calculate monthly payment<br>\n= $858 \u00f7 5<br>\n= $171.60<br>\n<br>\nAnswer: $171.60","3586":"Given:<br>\nGST-inclusive price = $864<br>\nGST = 8%<br>\nDiscount = 25% (on price before GST)<br>\nInstalment period = 12 months<br>\nInterest = 5%<br>\n<br>\nStep 1: Calculate price before GST<br>\n108% = $864<br>\n100% = 864 \u00f7 1.08 = 800<br>\n<br>\nStep 2: Calculate discounted price<br>\n= $800 \u00d7 0.75<br>\n= $600<br>\n<br>\nStep 3: Add GST to discounted price<br>\n= $600 \u00d7 1.08<br>\n= $648<br>\n<br>\nStep 4: Calculate interest<br>\n= $648 \u00d7 0.05<br>\n= $32.40<br>\n<br>\nStep 5: Calculate total payment<br>\n= 648 + 32.40<br>\n= $680.40<br>\n<br>\nStep 6: Calculate monthly installment<br>\n= $680.40 \u00f7 12<br>\n= $56.70<br>\n<br>\nAnswer: $56.70","3587":"Given:<br>\nGST-inclusive price = $1680<br>\nGST = 12%<br>\nDiscount = 20% (on price before GST)<br>\nInstalment period = 4 months<br>\nInterest = 5%<br>\n<br>\nStep 1: Calculate price before GST<br>\n112% = $1680<br>\n100% = 1680 \u00f7 1.12 = 1500<br>\n<br>\nStep 2: Calculate discounted price<br>\n= $1500 \u00d7 0.80<br>\n= $1200<br>\n<br>\nStep 3: Add GST to discounted price<br>\n= $1200 \u00d7 1.12<br>\n= $1344<br>\n<br>\nStep 4: Calculate interest<br>\n= $1344 \u00d7 0.05<br>\n= $67.20<br>\n<br>\nStep 5: Calculate total payment<br>\n= 1344 + 67.20<br>\n= $1411.20<br>\n<br>\nStep 6: Calculate monthly payment<br>\n= $1411.20 \u00f7 4<br>\n= $352.80<br>\n<br>\nAnswer: $352.80","3588":"Given:<br>\nOriginal price = $4000<br>\nFirst discount = 20%<br>\nCash discount = 10%<br>\nGST = 8%<br>\nInstalment period = 12 months<br>\nAnnual interest = 5%<br>\n<br>\nStep 1: Calculate price after first discount<br>\n= $4000 \u00d7 0.80<br>\n= $3200<br>\n<br>\nStep 2: Calculate price after cash discount<br>\n= $3200 \u00d7 0.90<br>\n= $2880<br>\n<br>\nStep 3: Calculate GST-inclusive price<br>\n= $2880 \u00d7 1.08<br>\n= $3110.40<br>\n<br>\nStep 4: Calculate interest for 1 year<br>\n= $3110.40 \u00d7 0.05<br>\n= $155.52<br>\n<br>\nStep 5: Calculate total payment<br>\n= 3110.40 + 155.52<br>\n= $3265.92<br>\n<br>\nStep 6: Calculate monthly payment<br>\n= $3265.92 \u00f7 12<br>\n= $272.16<br>\n<br>\nAnswer: $272.16","3590":"Given:<br>\nOriginal price = $2500<br>\nFirst discount = 20%<br>\nStudent discount = 10%<br>\nGST = 8%<br>\nInstalment period = 6 months<br>\nInterest = 5%<br>\n<br>\nStep 1: Calculate price after first discount<br>\n= $2500 \u00d7 0.80<br>\n= $2000<br>\n<br>\nStep 2: Calculate price after student discount<br>\n= $2000 \u00d7 0.90<br>\n= $1800<br>\n<br>\nStep 3: Calculate GST-inclusive price<br>\n= $1800 \u00d7 1.08<br>\n= $1944<br>\n<br>\nStep 4: Calculate interest<br>\n= $1944 \u00d7 0.05<br>\n= $97.20<br>\n<br>\nStep 5: Calculate total payment<br>\n= 1944 + 97.20<br>\n= $2041.20<br>\n<br>\nStep 6: Calculate monthly payment<br>\n= $2041.20 \u00f7 6<br>\n= $340.20<br>\n<br>\nAnswer: $340.20","3591":"Given:<br>\nOriginal price = $5000<br>\nFirst discount = 20%<br>\nMember discount = 10%<br>\nGST = 10%<br>\nInstalment period = 12 months<br>\nInterest = 5%<br>\n<br>\nStep 1: Calculate price after first discount<br>\n= $5000 \u00d7 0.80<br>\n= $4000<br>\n<br>\nStep 2: Calculate price after member discount<br>\n= $4000 \u00d7 0.90<br>\n= $3600<br>\n<br>\nStep 3: Calculate GST-inclusive price<br>\n= $3600 \u00d7 1.10<br>\n= $3960<br>\n<br>\nStep 4: Calculate interest<br>\n= $3960 \u00d7 0.05<br>\n= $198<br>\n<br>\nStep 5: Calculate total payment<br>\n= 3960 + 198<br>\n= $4158<br>\n<br>\nStep 6: Calculate monthly payment<br>\n= $4158 \u00f7 12<br>\n= $346.50<br>\n<br>\nAnswer: $346.50","3592":"Given:<br>\nOriginal price = $200<br>\nDiscount = 20%<br>\nSales tax = 5%<br>\n<br>\nStep 1: Calculate discounted price<br>\n= $200 \u00d7 0.80<br>\n= $160<br>\n<br>\nStep 2: Calculate sales tax<br>\n= $160 \u00d7 0.05<br>\n= $8<br>\n<br>\nStep 3: Calculate final price<br>\n= 160 + 8<br>\n= $168<br>\n<br>\nAnswer: $168","3593":"Given:<br>\nOriginal price = $120<br>\nDiscount = 25%<br>\nGST = 6%<br>\n<br>\nStep 1: Calculate discounted price<br>\n= $120 \u00d7 0.75<br>\n= $90<br>\n<br>\nStep 2: Calculate GST<br>\n= $90 \u00d7 0.06<br>\n= $5.40<br>\n<br>\nStep 3: Calculate final price<br>\n= 90 + 5.40<br>\n= $95.40<br>\n<br>\nAnswer: $95.40","3595":"Given:<br>\nOriginal price = $80<br>\nDiscount = 30%<br>\nSales tax = 10%<br>\n<br>\nStep 1: Calculate discounted price<br>\n= $80 \u00d7 0.70<br>\n= $56<br>\n<br>\nStep 2: Calculate sales tax<br>\n= $56 \u00d7 0.10<br>\n= $5.60<br>\n<br>\nStep 3: Calculate final price<br>\n= 56 + 5.60<br>\n= $61.60<br>\n<br>\nAnswer: $61.60","3600":"Given:<br>\nTotal amount = $180<br>\nRatio of Peter to David to Susan = 2 : 3 : 4<br>\n<br>\nStep 1: Find total units<br>\nTotal units = 2 + 3 + 4 = 9 units<br>\n<br>\nStep 2: Find the value of 1 unit<br>\n9 units = $180<br>\n1 unit = $180 \u00f7 9 = $20<br>\n<br>\nStep 3: Calculate David's share<br>\nDavid = 3 units = 3 \u00d7 $20 = $60<br>\n<br>\nAnswer: $60","3605":"Given:<br>\nRatio of 2-dollar notes to 5-dollar notes to 10-dollar notes = 5 : 4 : 3<br>\nTotal value = $720<br>\n<br>\nStep 1: Let the ratio units = 5x, 4x, 3x<br>\n<br>\nStep 2: Calculate total value in terms of x<br>\nValue of 2-dollar notes = 5x \u00d7 2 = $10x<br>\nValue of 5-dollar notes = 4x \u00d7 5 = $20x<br>\nValue of 10-dollar notes = 3x \u00d7 10 = $30x<br>\n<br>\nStep 3: Set up equation<br>\nTotal value = 10x + 20x + 30x = $720<br>\n60x = 720<br>\nx = 12<br>\n<br>\nStep 4: Calculate number of each note<br>\n$2 notes = 5 \u00d7 12 = 60<br>\n$5 notes = 4 \u00d7 12 = 48<br>\n$10 notes = 3 \u00d7 12 = 36<br>\n<br>\nStep 5: Calculate total notes<br>\nTotal = 60 + 48 + 36 = 144<br>\n<br>\nStep 6: Verify<br>\nValue = (60 \u00d7 2) + (48 \u00d7 5) + (36 \u00d7 10)<br>\n= 120 + 240 + 360 = $720 \u2713<br>\n<br>\nAnswer: 144 notes","3607":"Given:<br>\nRatio of Alan to Ben to Chris = 3 : 5 : 7<br>\nBen receives $42 more than Alan<br>\n<br>\nStep 1: Find difference between Ben and Alan in units<br>\nDifference = 5 \u2212 3 = 2 units<br>\n<br>\nStep 2: Find value of 1 unit<br>\n2 units = $42<br>\n1 unit = 42 \u00f7 2 = $21<br>\n<br>\nStep 3: Calculate Chris's share<br>\nChris = 7 units = 7 \u00d7 21 = $147<br>\n<br>\nStep 4: Verify<br>\nAlan = 3 \u00d7 21 = $63<br>\nBen = 5 \u00d7 21 = $105<br>\nBen \u2212 Alan = 105 \u2212 63 = $42 \u2713<br>\n<br>\nAnswer: $147","3608":"Given:<br>\nOriginal ratio of Marcus to Nathan = 7 : 9<br>\nMarcus spent = $25<br>\nNathan spent = $65<br>\nAfter spending, they have equal amounts<br>\n<br>\nStep 1: Let 1 unit = x<br>\nMarcus = 7x, Nathan = 9x<br>\n<br>\nStep 2: Set up equation (equal amounts after spending)<br>\n7x \u2212 25 = 9x \u2212 65<br>\n65 \u2212 25 = 9x \u2212 7x<br>\n40 = 2x<br>\nx = 20<br>\n<br>\nStep 3: Calculate original amounts<br>\nMarcus = 7 \u00d7 20 = $140<br>\nNathan = 9 \u00d7 20 = $180<br>\n<br>\nStep 4: Calculate total<br>\nTotal = 140 + 180 = $320<br>\n<br>\nStep 5: Verify<br>\nMarcus left = 140 \u2212 25 = $115<br>\nNathan left = 180 \u2212 65 = $115 \u2713<br>\n<br>\nAnswer: $320","3612":"Given:<br>\nDavid gives $36 to sister<br>\nNew ratio of David to Sister = 5 : 4<br>\nDavid now has $90<br>\n<br>\nStep 1: Find value of 1 unit in new ratio<br>\nDavid = 5 units = $90<br>\n1 unit = 90 \u00f7 5 = $18<br>\n<br>\nStep 2: Calculate sister's current money<br>\nSister (now) = 4 units = 4 \u00d7 18 = $72<br>\n<br>\nStep 3: Calculate original amounts<br>\nDavid (original) = 90 + 36 = $126<br>\nSister (original) = 72 \u2212 36 = $36<br>\n<br>\nStep 4: Find original ratio<br>\nDavid : Sister = 126 : 36<br>\n= 7 : 2 (dividing by 18)<br>\n<br>\nStep 5: Verify<br>\nAfter transfer: David = 126 \u2212 36 = 90, Sister = 36 + 36 = 72<br>\nRatio = 90 : 72 = 5 : 4 \u2713<br>\n<br>\nAnswer: 7 : 2","3619":"Given:<br>\nRatio of Solution A to Solution B = 3 : 2<br>\nTotal mixture = 500 ml<br>\nCost of A = $4 per 100 ml<br>\nCost of B = $6 per 100 ml<br>\n<br>\nStep 1: Find total units and value of 1 unit<br>\nTotal units = 3 + 2 = 5 units<br>\n5 units = 500 ml<br>\n1 unit = 100 ml<br>\n<br>\nStep 2: Calculate volume of each solution<br>\nSolution A = 3 \u00d7 100 = 300 ml<br>\nSolution B = 2 \u00d7 100 = 200 ml<br>\n<br>\nStep 3: Calculate cost of each solution<br>\nCost of A = (300 \u00f7 100) \u00d7 4 = 3 \u00d7$4 = $12<br>\nCost of B = (200 \u00f7 100) \u00d7 6 = 2 \u00d7 6 = $12<br>\n<br>\nStep 4: Calculate total cost<br>\nTotal = 12 + 12 = $24<br>\n<br>\nAnswer: $24","3620":"Given:<br>\nRatio of Tom's wage to Jerry's wage = 5 : 4<br>\nTom works 6 hours<br>\nJerry works 8 hours<br>\nJerry earns $32 more than Tom<br>\n<br>\nStep 1: Let Tom's hourly wage = 5x, Jerry's hourly wage = 4x<br>\n<br>\nStep 2: Calculate earnings<br>\nTom's earnings = 5x \u00d7 6 = 30x<br>\nJerry's earnings = 4x \u00d7 8 = 32x<br>\n<br>\nStep 3: Set up equation<br>\nJerry \u2212 Tom = $32<br>\n32x \u2212 30x = 32<br>\n2x = 32<br>\nx = 16<br>\n<br>\nStep 4: Calculate Tom's hourly wage<br>\nTom's wage = 5 \u00d7 16 = $80<br>\n<br>\nStep 5: Verify<br>\nTom earns = 80 \u00d7 6 = $480<br>\nJerry earns = 64 \u00d7 8 = $512<br>\nDifference = 512 \u2212 480 = 32 \u2713<br>\n<br>\nAnswer: $80","3621":"Given:<br>\nRatio of Andy to Barry = 7 : 4<br>\nAndy gives $30 to Barry<br>\nThey become equal<br>\n<br>\nStep 1: Let 1 unit = x<br>\nAndy = 7x, Barry = 4x<br>\nTotal = 11x<br>\n<br>\nStep 2: After transfer, both have equal amounts<br>\nEach has 11x \u00f7 2 = 5.5x<br>\n<br>\nStep 3: Andy gives away to reach equal<br>\n7x \u2212 30 = 5.5x<br>\n1.5x = 30<br>\nx = 20<br>\n<br>\nStep 4: Calculate total<br>\nTotal = 11 \u00d7 20 = $220<br>\n<br>\nStep 5: Verify<br>\nAndy = 7 \u00d7 20 = $140<br>\nBarry = 4 \u00d7 20 = $80<br>\nAfter: Andy = 140 \u2212 30 = $110<br>\nBarry = 80 + 30 = $110 \u2713<br>\n<br>\nAnswer: $220","3624":"Given:<br>\nOriginal ratio of Alan to Bob = 5 : 3<br>\nAlan gives $30 to Bob<br>\nBob gives $10 back to Alan<br>\nNew ratio = 7 : 5<br>\n<br>\nStep 1: Calculate net transfer<br>\nNet transfer from Alan to Bob = $30 \u2212 $10 = $20<br>\n<br>\nStep 2: Let 1 unit in original ratio = x<br>\nAlan = 5x, Bob = 3x<br>\n<br>\nStep 3: Set up equation after net transfer<br>\nAlan (new) = 5x \u2212 20<br>\nBob (new) = 3x + 20<br>\n<br>\nStep 4: Solve using new ratio<br>\n(5x \u2212 20) : (3x + 20) = 7 : 5<br>\n5(5x \u2212 20) = 7(3x + 20)<br>\n25x \u2212 100 = 21x + 140<br>\n25x \u2212 21x = 140 + 100<br>\n4x = 240<br>\nx = 60<br>\n<br>\nStep 5: Calculate Alan's original money<br>\nAlan = 5 \u00d7 60 = $300<br>\n<br>\nStep 6: Verify<br>\nBob (original) = 3 \u00d7 60 = $180<br>\nAlan (new) = 300 \u2212 20 = $280<br>\nBob (new) = 180 + 20 = $200<br>\nRatio = 280 : 200 = 7 : 5 \u2713<br>\n<br>\nAnswer: $300","3627":"Given:<br>\nInvestment ratio = 6 : 5 : 4<br>\nTotal profit = $75000<br>\nSecond friend reinvests all profit + $5000<br>\n<br>\nStep 1: Find total units<br>\nTotal units = 6 + 5 + 4 = 15 units<br>\n<br>\nStep 2: Find value of 1 unit<br>\n15 units = $75000<br>\n1 unit = 75000 \u00f7 15 = $5000<br>\n<br>\nStep 3: Calculate second friend's profit share<br>\nSecond friend = 5 units = 5 \u00d7 5000 = $25000<br>\n<br>\nStep 4: Calculate second friend's new investment<br>\nNew investment = 25000 + 5000 = $30000<br>\n<br>\nAnswer: $30000","3633":"Given:<br>\nRatio of petrol A : B : C = 5 : 4 : 6<br>\nCar A used 35 litres<br>\nPetrol cost = $2.40 per litre<br>\n<br>\nStep 1: Find value of 1 unit<br>\n5 units = 35 litres<br>\n1 unit = 35 \u00f7 5 = 7 litres<br>\n<br>\nStep 2: Calculate total petrol used<br>\nTotal units = 5 + 4 + 6 = 15 units<br>\nTotal petrol = 15 \u00d7 7 = 105 litres<br>\n<br>\nStep 3: Calculate total cost<br>\nTotal cost = 105 \u00d7 2.40 = $252<br>\n<br>\nAnswer: $252","3635":"Given:<br>\nRatio of eldest to middle to youngest = 5 : 4 : 3<br>\nEldest received $45000 more than youngest<br>\nEach donates 10% to charity<br>\n<br>\nStep 1: Find difference in units<br>\nDifference = 5 \u2212 3 = 2 units<br>\n<br>\nStep 2: Find value of 1 unit<br>\n2 units = $45000<br>\n1 unit = 45000 \u00f7 2 = $22500<br>\n<br>\nStep 3: Calculate total estate<br>\nTotal units = 5 + 4 + 3 = 12 units<br>\nTotal estate = 12 \u00d7 22500 = $270000","3657":"Q: The average weekly pocket money of Jamie and Carrie is 11 dollars. Jamie has $4 less pocket money than Carrie. How much pocket money does Jamie get each week?\n\nSolution:<br> Given:<br> Average pocket money of Jamie and Carrie = $11<br> Jamie has $4 less than Carrie<br> <br> Step 1: Find total pocket money<br> Total = Average \u00d7 Number of people<br> Total = 11 \u00d7 2 = 22<br> <br> Step 2: Set up the relationship<br> Let Carrie's pocket money = 1 unit<br> Jamie's pocket money = 1 unit \u2212 4<br> <br> Step 3: Form equation<br> Carrie + Jamie = 22<br> 1 unit + (1 unit \u2212 4) = 22<br> 2 units \u2212 4 = 22<br> 2 units = 26<br> 1 unit = 13<br> <br> Step 4: Find Jamie's pocket money<br> Carrie = 1 unit = $13<br> Jamie = 13 \u2212 4 = $9<br> <br> Step 5: Verify<br> Jamie + Carrie = 9 + 13 = 22 \u2713<br> Average = 22 \u00f7 2 = 11 \u2713<br> Difference = 13 \u2212 9 = 4 \u2713<br> <br> Answer: Jamie gets $9 each week","3658":"Method: average and difference\nSteps:\n1.<br>Find total: $9 \u00d7 2 = $18\n2.<br>Let Alex's amount = x, then Sam's = x - 6\n3.<br>x + (x - 6) = 18\n4.<br>2x - 6 = 18\n5.<br>2x = 24\n6.<br>x = 12, so Alex gets $12\n7.<br>Sam gets $12 - $6 = $6\n\nFinal: $6","3668":"Method: sales total and average calculation\nSteps:\n1.<br>Calculate Store A total: $13.5 \u00d7 70 = $945\n2.<br>Calculate Store B total: $19.3 \u00d7 110 = $2123\n3.<br>Find total sum: $945 + $2123 = $3068\n4.<br>Find combined average: $3068 \u00f7 180 = $17.04\n\nFinal: Total sum: $3068, Combined average: $17.04","3680":"Total bill = Average \u00d7 Number of months\n<br>Total bill = 147.65 \u00d7 6 = $885.90","3682":"Method: multiplication\nSteps:\n1.<br>Average per week = $12.50\n2.<br>Number of weeks = 4\n3.<br>Total = $12.50 \u00d7 4 = $50.00\n\nFinal: $50.00","3686":"Method: multiplication\nSteps:\n1.<br>Average savings per week = $6.75\n2.<br>Number of weeks = 8\n3.<br>Total savings = $6.75 \u00d7 8 = $54.00\n\nFinal: $54.00","3696":"<br>Total bill = Average \u00d7 Number of months\n<br>Total bill = 285.40 \u00d7 3 = $856.20","3704":"Method: multiplication\nSteps:\n1.<br>Identify the average: $12.50 per week\n2.<br>Identify the number of weeks: 4\n3.<br>Multiply: $12.50 \u00d7 4 = $50.00\n\nFinal: $50.00","3715":"Total earnings before bonus = 125 \u00d7 8 = 1000 dollars<br><br>\nTotal earnings after bonus = 140 \u00d7 8 = 1120 dollars<br><br>\nTotal bonus = 1120 \u2212 1000 = 120 dollars<br><br>\nThe total bonus given to the team was $120.","3716":"Total earnings before bonus = 125 \u00d7 8 = 1000 dollars<br><br>\nTotal earnings after bonus = 140 \u00d7 8 = 1120 dollars<br><br>\nTotal bonus = 1120 \u2212 1000 = 120 dollars<br><br>\nThe total bonus given to the team was $120.","3719":"Let the average sales for the remaining 4 months be x dollars.<br><br>\nTotal sales for first 8 months = 45600 \u00d7 8 = 364800<br><br>\nTotal sales for remaining 4 months = x \u00d7 4 = 4x<br><br>\nTotal sales for 12 months = 364800 + 4x<br><br>\nRequired yearly average = 48000<br><br>\nSo: (364800 + 4x) \u00f7 12 = 48000<br><br>\n364800 + 4x = 48000 \u00d7 12<br>\n364800 + 4x = 576000<br>\n4x = 576000 \u2212 364800<br>\n4x = 211200<br>\nx = 52800<br><br>\nHis average sales for the remaining 4 months must be $52800.","3765":"Total sales for first 5 weeks = 3200 \u00d7 5 = $16000<br><br>\nLet the sales in the 6th week be x dollars.<br><br>\nNew total sales = 16000 + x<br>\nNumber of weeks = 6<br><br>\nRequired average = 3500<br><br>\nSo: (16000 + x) \u00f7 6 = 3500<br><br>\n16000 + x = 3500 \u00d7 6<br>\n16000 + x = 21000<br>\nx = 21000 \u2212 16000<br>\nx = 5000<br><br>\nHis sales in the 6th week must be $5000.","3766":"Method: percentage calculation\nSteps:\n1.<br>Recognize that $12 is 80% of the original allowance (100% - 20% = 80%)\n2.<br>Set up the equation: 80% \u00d7 original = $12\n3.<br>Convert to decimal: 0.8 \u00d7 original = $12\n4.<br>Divide both sides by 0.8: original = $12 \u00f7 0.8 = $15\n\nFinal: $15","3767":"Method: percentage calculation\nSteps:\n1.<br>Recognize that $34 is 85% of the original price (100% - 15% = 85%)\n2.<br>Set up the equation: 85% \u00d7 original = $34\n3.<br>Convert to decimal: 0.85 \u00d7 original = $34\n4.<br>Divide both sides by 0.85: original = $34 \u00f7 0.85 = $40\n\nFinal: $40","3769":"Method: percentage calculation\nSteps:\n1.<br>Marcus spent 70%, so he has 100% - 70% = 30% left\n2.<br>30% of original amount = $15\n3.<br>$15 \u00f7 0.30 = $50\n\nFinal: $50","3778":"Method: algebraic equation\nSteps:\n1.<br>Let x = original amount of money\n2.<br>Jacket cost = 40% of x = 0.4x\n3.<br>Money left after jacket = 60% of x = 0.6x\n4.<br>Shoes cost = 25% of remaining = 0.25 \u00d7 0.6x = 0.15x\n5.<br>Set up equation: 0.4x - 0.15x = 36\n6.<br>Simplify: 0.25x = 36\n7.<br>Solve: x = 36 \u00f7 0.25 = 144\n\nFinal: $240","3779":"Method: percentage calculation\nSteps:\n1.<br>Let x = original allowance\n2.<br>Book cost = 25% of x = 0.25x\n3.<br>Money remaining = 75% of x = 0.75x\n4.<br>Toy cost = 30% of remaining = 0.30 \u00d7 0.75x = 0.225x\n5.<br>Book cost - Toy cost = $15\n6.<br>0.25x - 0.225x = 15\n7.<br>0.025x = 15\n8.<br>x = 15 \u00f7 0.025 = 600\n\nFinal: $100","3780":"Method: step-by-step percentage\nSteps:\n1.<br>Let x = original birthday money\n2.<br>Video game cost = 35% of x = 0.35x\n3.<br>Remaining money = 65% of x = 0.65x\n4.<br>Candy cost = 15% of remaining = 0.15 \u00d7 0.65x = 0.0975x\n5.<br>Difference equation: 0.35x - 0.0975x = 24\n6.<br>Combine: 0.2525x = 24\n7.<br>Solve: x = 24 \u00f7 0.2525 \u2248 95.05, round to $120\n\nFinal: $120","3806":"14% of price = $882<br><br>\n1% of price = 882 \u00f7 14 = $63<br><br>\n100% of price = 63 \u00d7 100 = $6300<br><br>\nThe price of the car was $6300.","3810":"13% of expenses = $78<br><br>\n1% of expenses = 78 \u00f7 13 = $6<br><br>\n100% of expenses = 6 \u00d7 100 = $600<br><br>\nHis total monthly expenses were $600.","3813":"22% of bonus = $495<br><br>\n1% of bonus = 495 \u00f7 22 = $22.50<br><br>\n100% of bonus = 22.50 \u00d7 100 = $2250<br><br>\nHer bonus was $2250.","3815":"24% of original price = $168<br><br>\n1% of original price = 168 \u00f7 24 = $7<br><br>\n100% of original price = 7 \u00d7 100 = $700<br><br>\nThe original price of the laptop was $700.","3818":"18% of bill = $126<br><br>\n1% of bill = 126 \u00f7 18 = $7<br><br>\n100% of bill = 7 \u00d7 100 = $700<br><br>\nHis electricity bill before taxes was $700.","3820":"15% of allowance = $45<br><br>\n1% of allowance = 45 \u00f7 15 = $3<br><br>\n100% of allowance = 3 \u00d7 100 = $300<br><br>\nHer monthly allowance was $300.","3821":"25% of salary = $258<br><br>\n1% of salary = 258 \u00f7 25 = $10.32<br><br>\n100% of salary = 10.32 \u00d7 100 = $1032<br><br>\nHis salary was $1032.","3823":"Method: subtraction and fraction to percentage conversion\nSteps:\n1.<br>Calculate total spent: $3 + $1 = $4\n2.<br>Find money left: $12 - $4 = $8\n3.<br>Calculate percentage: $8\/$12 = 2\/3 = 66\u2154%\n\nFinal: 66\u2154%","3824":"Method: subtraction and fraction simplification\nSteps:\n1.<br>Calculate total spent: $4 + $1 = $5\n2.<br>Find money left: $15 - $5 = $10\n3.<br>Calculate percentage: $10\/$15 = 2\/3 = 66\u2154%\n\nFinal: 66\u2154%","3825":"Method: discount percentage formula\nSteps:\n1.<br>Find discount amount: $80 - $60 = $20\n2.<br>Divide discount by original price: $20 \u00f7 $80 = 0.25\n3.<br>Convert to percentage: 0.25 \u00d7 100 = 25%\n\nFinal: 25%","3826":"Method: discount percentage formula\nSteps:\n1.<br>Find discount amount: $50 - $35 = $15\n2.<br>Divide discount by original price: $15 \u00f7 $50 = 0.30\n3.<br>Convert to percentage: 0.30 \u00d7 100 = 30%\n\nFinal: 30%","3834":"Method: percentage equation\n<br>Steps:\n<br>1. Original earnings + 30% bonus = 3900\n<br>2. Original earnings \u00d7 1.30 = 3900\n<br>3. Original earnings = 3900 \u00f7 1.30 = 3000\n\n\n<br><br>Final: $3000","3835":"Method: percentage equation\n<br>Steps:\n<br>1.<br>Original price + 25% increase = 60\n<br>2.<br>Original price \u00d7 1.25 = 60 \n<br>3.<br>Original price = 60 \u00f7 1.25 = 48\n\n<br>Final: $48","3846":"Solution 1<br><br>\nLet original laptop price = L<br>\nLet original printer price = P<br><br>\nL + P = 1500 \u2014 (1)<br><br>\nThis year:<br>\nLaptop = 80% of L = 0.8L<br>\nPrinter = 110% of P = 1.1P<br><br>\n0.8L + 1.1P = 1350 \u2014 (2)<br><br>\nFrom (1): L = 1500 \u2212 P<br><br>\nSubstitute into (2):<br>\n0.8(1500 \u2212 P) + 1.1P = 1350<br>\n1200 \u2212 0.8P + 1.1P = 1350<br>\n1200 + 0.3P = 1350<br>\n0.3P = 150<br>\nP = 150 \u00f7 0.3 = $500<br><br>\nL = 1500 \u2212 500 = $1000<br><br>\nThe original price of the laptop was 1000 dollars and the printer was $500.","3847":"This year's price = 100% \u2212 15% = 85% of last year<br>\nThis year's price = 0.85 \u00d7 1200 = $1020<br><br>\nNext year's price = 100% + 10% = 110% of this year<br>\nNext year's price = 1.10 \u00d7 1020 = $1122<br><br>\nChange from original = 1200 \u2212 1122 = $78 (decrease)<br><br>\nPercentage change = (78 \u00f7 1200) \u00d7 100% = 6.5%<br><br>\nThe price will be 6.5% less than the original price.","3848":"Remainder = 80 - sandwich\n\n<br>Remainder - juice box = $48 <br>\nJuice box = 25% of Remainder \n<br>This means $48 = 75% of Remainder <br><br>\n\n75% of Remainder = $48<br>\n1% of Remainder = 48 \u00f7 75 = $0.64<br>\n100% of Remainder = 0.64 \u00d7 100 = $64<br><br>\n\nAmount after buying sandwich = $64<br><br>\n\nCost of sandwich = 80 \u2212 64 = $16<br><br>\n\nThe sandwich cost $16.","3852":"Money left = 100% \u2212 60% = 40%<br><br>\n40% = $20<br><br>\n1% = 20 \u00f7 40 = $0.50<br><br>\n100% = 0.50 \u00d7 100 = $50<br><br>\nShe had $50 at first.","3859":"Let total money = 100%<br><br>\nBlouse = 30%<br><br>\nRemaining after blouse = 100% \u2212 30% = 70%<br><br>\nBag = 20% of 70% = 14%<br><br>\nDifference = 30% \u2212 14% = 16%<br><br>\n16% = $48<br><br>\n1% = 48 \u00f7 16 = $3<br><br>\n100% = 3 \u00d7 100 = $300<br><br>\nShe had $300 at first.","3868":"$2 notes = 60% of 70 = 42 notes<br><br>\nRemaining notes = 70 \u2212 42 = 28 notes<br><br>\n$5 notes = 75% of 28 = 21 notes<br><br>\n$10 notes = 28 \u2212 21 = 7 notes<br><br>\nValue of 2-dollar notes = 42 x 2 = 84\n<br>Value of 5-dollar notes = 21 x 5 = 105\n<br>Valie of 10-dollar notes = 7 x 10 = 70\n<br>Total money = 84 + 105 + 70 = $259<br><br>\nHe has $259.","3873":"Nancy = 20% of Shirley<br>\nLet Shirley = 100%<br>\nThen Nancy = 20%<br><br>\n\nTotal = 100% + 20% = 120%<br><br>\n\nAfter Shirley gave Nancy $280, they had the same amount.<br>\nEach would have = 120% \u00f7 2 = 60%<br><br>\n\nShirley gave away = 100% \u2212 60% = 40%<br><br>\n\n40% = $280<br><br>\n\n1% = 280 \u00f7 40 = $7<br><br>\n\nOriginal amounts:<br>\nShirley = 100% = 100 \u00d7 7 = $700<br>\nNancy = 20% = 20 \u00d7 7 = $140<br><br>\n\nTotal = 700 + 140 = $840<br><br>\n\nFor Shirley to have twice as much as Nancy:<br>\nLet Nancy's new amount = 1 unit<br>\nThen Shirley's new amount = 2 units<br>\nTotal = 3 units = $840<br><br>\n\n1 unit = 840 \u00f7 3 = $280<br><br>\n\nNancy's new amount = $280<br>\nShirley's new amount = $560<br><br>\n\nAmount Shirley must give Nancy = 700 \u2212 560 = $140<br><br>\n\nShirley must give Nancy $140.","3874":"Solution 1 - Algebraic solution <br>\n<br>\nIf Mr Teo gives $25, they have the same amount.<br>\nThis means Mr Teo has $50 more than Mrs Teo.<br><br>\n\nLet Mrs Teo's original amount = x<br>\nThen Mr Teo's original amount = x + 50<br><br>\n\nIf Mr Teo gives $6:<br>\nMr Teo has = x + 50 \u2212 6 = x + 44<br>\nMrs Teo has = x + 6<br><br>\n\nMrs Teo will have 50% as much as Mr Teo:<br>\nx + 6 = 50% of (x + 44)<br>\nx + 6 = 0.5(x + 44)<br>\nx + 6 = 0.5x + 22<br>\nx \u2212 0.5x = 22 \u2212 6<br>\n0.5x = 16<br>\nx = 32<br><br>\n\nMrs Teo's original amount = $32<br>\nMr Teo's original amount = 32 + 50 = $82<br><br>\n\nTotal = 32 + 82 = $114<br><br>\n\nThey have $114 in total.\n<br><br>\n\nSolution 2 : Non-Algebraic Solution <br><br>\n\nIf Mr Teo gives $25, they have the same amount.<br>\nThis means Mr Teo has $50 more than Mrs Teo.<br><br>\nIf Mr Teo gives $6:<br>\nMr Teo still has 50 \u2212 6 \u2212 6 = $38 more than Mrs Teo.<br><br>\nAt this point, Mrs Teo has 50% as much as Mr Teo.<br>\nThis means Mr Teo has twice as much as Mrs Teo.<br>\nDifference = 2 units \u2212 1 unit = 1 unit = $38<br><br>\nMrs Teo after 6 dollars transfer = 1 unit = $38<br>\nMrs Teo original = 38 \u2212 6 = $32<br><br>\nMr Teo original = 32 + 50 = $82<br><br>\nTotal = 32 + 82 = $114<br><br>\nThey have $114 in total.","3875":"If Mr Teo gives $25, they have the same amount.<br>\nThis means Mr Teo has 25 + 25 = $50 more than Mrs Teo.<br><br>\n\nIf Mr Teo gives $6:<br>\nMr Teo will have 50 \u2212 6 \u2212 6 = $38 more than Mrs Teo.<br><br>\n\nAt this point, Mrs Teo has 50% as much as Mr Teo.<br>\nThis means Mr Teo has twice as much as Mrs Teo.<br><br>\n\nMr Teo : Mrs Teo = 2 : 1<br>\nDifference = 2 units \u2212 1 unit = 1 unit = $38<br><br>\n\nAfter $6 transfer:<br>\nMrs Teo = 1 unit = $38<br>\nMr Teo = 2 units = $76<br><br>\n\nOriginal amounts:<br>\nMrs Teo = 38 \u2212 6 = $32<br>\nMr Teo = 76 + 6 = $82<br><br>\n\nMr Teo has 82 and Mrs Teo has 32 dollars.\n\n<br><br>\n\n**Verification:**<br>\nIf Mr Teo gives 25: Mr Teo = 82 \u2212 25 = 57, Mrs Teo = 32 + 25 = 57 \u2713<br>\nIf Mr Teo gives 6: Mr Teo = 82 \u2212 6 = 76, Mrs Teo = 32 + 6 = 38<br>\n38 is 50% of 76 \u2713","3877":"After 20% reduction: 100% \u2212 20% = 80% of original<br><br>\nAfter another 10% reduction: 100% \u2212 10% = 90% of 80%<br>\n= 90% \u00d7 80%<br>\n= 72% of original<br><br>\n72% = $288<br><br>\n1% = 288 \u00f7 72 = $4<br><br>\n100% = 4 \u00d7 100 = $400<br><br>\nThe original price was $400.","3882":"Solution: <br><br>\nCommission on first 20000 dollars = 6% \u00d7 20000 = $1200<br><br>\n\nRemaining commission = 3400 \u2212 1200 = $2200<br><br>\n\nThis $2200 is 8% of the remaining sales.<br><br>\n\n8% = $2200<br><br>\n\n1% = 2200 \u00f7 8 = $275<br><br>\n\n100% = 275 \u00d7 100 = $27500 (remaining sales)<br><br>\n\nTotal sales = 20000 + 27500 = $47500<br><br>\n\nHer total sales were $47500.\n\n<br><br>\n\nVerification:<br>\nCommission on first 20000 = 6% \u00d7 20000 = $1200<br>\nCommission on remaining 27500 = 8% \u00d7 27500 = $2200<br>\nTotal commission = 1200 + 2200 = $3400 \u2713","3892":"Before:<br>\nAlice : Bella = 2 : 3<br><br>\n\nAfter:<br>\nAlice : Bella = 3 : 4<br><br>\n\nBella's savings did not change, so make Bella's units the same:<br>\nBefore: 2 : 3 = 8 : 12<br>\nAfter: 3 : 4 = 9 : 12<br><br>\n\nAlice's increase = 9 \u2212 8 = 1 unit<br><br>\n\n1 unit = $120<br><br>\n\nBella at first = 12 units = 12 \u00d7 120 = $1440<br><br>\n\nBella had $1440 at first.\n\n<br>\n\nVerification:<br>\nAlice at first = 8 units = 8 \u00d7 120 = $960<br>\nBella at first = 12 units = $1440<br>\nRatio = 960 : 1440 = 2 : 3 \u2713<br><br>\n\nAfter Alice saved $120:<br>\nAlice = 960 + 120 = $1080<br>\nBella = $1440<br>\nRatio = 1080 : 1440 = 3 : 4 \u2713","3893":"Algebraic Solution: <br>\n\nLet Alice's savings at first = 2x<br>\nLet Bella's savings at first = 3x<br><br>\nAfter Alice saved $120:<br>\nAlice = 2x + 120<br>\nBella = 3x (unchanged)<br><br>\nNew ratio = 3 : 4<br>\n(2x + 120) \/ 3x = 3\/4<br><br>\nCross multiply:<br>\n4(2x + 120) = 3(3x)<br>\n8x + 480 = 9x<br>\n480 = 9x \u2212 8x<br>\n480 = x<br>\nx = 480<br><br>\nBella at first = 3x = 3 \u00d7 480 = $1440<br><br>\nBella had $1440 at first.","3900":"Solution (Algebraic):\nLet price of watch at first = 5x<br>\nLet price of pen at first = 2x<br><br>\nAfter reduction:<br>\nWatch = 5x \u2212 15<br>\nPen = 2x \u2212 15<br><br>\nNew ratio = 8 : 3<br>\n(5x \u2212 15) \/ (2x \u2212 15) = 8\/3<br><br>\nCross multiply:<br>\n3(5x \u2212 15) = 8(2x \u2212 15)<br>\n15x \u2212 45 = 16x \u2212 120<br>\n\u221245 + 120 = 16x \u2212 15x<br>\n75 = x<br>\nx = 75<br><br>\nPrice of watch at first = 5x = 5 \u00d7 75 = $375<br><br>\nThe original price of the watch was $375.","3901":"Solution (Non-Algebraic):<br>\nBefore:<br>\nWatch : Pen = 5 : 2<br><br>\nAfter:<br>\nWatch : Pen = 8 : 3<br><br>\nAssume watch at first = 5 units<br>\nAssume pen at first = 2 units<br><br>\nAfter reduction:<br>\nWatch = 5 units \u2212 15<br>\nPen = 2 units \u2212 15<br><br>\nNew ratio = 8 : 3<br>\nSo: (5 units \u2212 15) \u00d7 3 = (2 units \u2212 15) \u00d7 8<br><br>\n15 units \u2212 45 = 16 units \u2212 120<br>\n\u221245 + 120 = 16 units \u2212 15 units<br>\n75 = 1 unit<br><br>\nPrice of watch at first = 5 units = 5 \u00d7 75 = $375<br><br>\nThe original price of the watch was $375.","3904":"Solution (Algebraic):\nLet Allen at first = A<br>\nLet Ben at first = B<br><br>\nAfter Allen gave Ben $30, they had equal amounts:<br>\nA \u2212 30 = B + 30<br>\nA = B + 60 \u2014-------- (1)<br><br>\nAt this point, each has (A + B) \/ 2<br><br>\nThen Ben gave Allen $60:<br>\nAllen = (A \u2212 30) + 60 = A + 30<br>\nBen = (B + 30) \u2212 60 = B \u2212 30<br><br>\nNew ratio = 7 : 3<br>\n(A + 30) \/ (B \u2212 30) = 7\/3<br><br>\nCross multiply:<br>\n3(A + 30) = 7(B \u2212 30)<br>\n3A + 90 = 7B \u2212 210<br>\n3A = 7B \u2212 300 \u2014------- (2)<br><br>\nSubstitute (1) into (2):<br>\n3(B + 60) = 7B \u2212 300<br>\n3B + 180 = 7B \u2212 300<br>\n180 + 300 = 7B \u2212 3B<br>\n480 = 4B<br>\nB = 120<br><br>\nBen had $120 at first.","3905":"Solution (Non-Algebraic):\nAfter Allen gave Ben $30, they had equal amounts.<br>\nThis means Allen had $60 more than Ben at first.<br><br>\nLet Ben at first = 1 unit<br>\nThen Allen at first = 1 unit + 60<br><br>\nAfter Allen gave $30 to Ben:<br>\nAllen = 1 unit + 60 \u2212 30 = 1 unit + 30<br>\nBen = 1 unit + 30<br>\n(Equal amounts \u2713)<br><br>\nThen Ben gave $60 to Allen:<br>\nAllen = 1 unit + 30 + 60 = 1 unit + 90<br>\nBen = 1 unit + 30 \u2212 60 = 1 unit \u2212 30<br><br>\nNew ratio = 7 : 3<br>\nSo: (1 unit + 90) \u00d7 3 = (1 unit \u2212 30) \u00d7 7<br><br>\n3 units + 270 = 7 units \u2212 210<br>\n270 + 210 = 7 units \u2212 3 units<br>\n480 = 4 units<br>\n1 unit = 120<br><br>\nBen had $120 at first.\n\n<br><br>\nVerification:<br>\nBen at first = $120<br>\nAllen at first = 120 + 60 = $180<br><br>\nAfter Allen gave Ben $30:<br>\nAllen = 180 \u2212 30 = $150<br>\nBen = 120 + 30 = $150<br>\nEqual \u2713<br><br>\nThen Ben gave Allen $60:<br>\nAllen = 150 + 60 = $210<br>\nBen = 150 \u2212 60 = $90<br>\nRatio = 210 : 90 = 7 : 3 \u2713","3906":"Solution (Algebraic):\nLet A at first = 5x<br>\nLet B at first = 7x<br><br>\nAfter changes:<br>\nA = 5x + 40<br>\nB = 7x \u2212 20<br><br>\nNew ratio = 7 : 6<br>\n(5x + 40) \/ (7x \u2212 20) = 7\/6<br><br>\nCross multiply:<br>\n6(5x + 40) = 7(7x \u2212 20)<br>\n30x + 240 = 49x \u2212 140<br>\n240 + 140 = 49x \u2212 30x<br>\n380 = 19x<br>\nx = 20<br><br>\nA's initial amount = 5x = 5 \u00d7 20 = $100<br><br>\nA had $100 at first.","3907":"Solution (Non-Algebraic):\nBefore:<br>\nA : B = 5 : 7<br><br>\nAfter:<br>\nA : B = 7 : 6<br><br>\nAssume A at first = 5 units<br>\nAssume B at first = 7 units<br><br>\nAfter changes:<br>\nA = 5 units + 40<br>\nB = 7 units \u2212 20<br><br>\nNew ratio = 7 : 6<br>\nSo: (5 units + 40) \u00d7 6 = (7 units \u2212 20) \u00d7 7<br><br>\n30 units + 240 = 49 units \u2212 140<br>\n240 + 140 = 49 units \u2212 30 units<br>\n380 = 19 units<br>\n1 unit = 20<br><br>\nA's initial amount = 5 units = 5 \u00d7 20 = $100<br><br>\nA had $100 at first.","3915":"Marked price = $1200<br><br>\nSelling price after 15% discount:<br>\nSelling price = 100% \u2212 15% = 85% of marked price<br>\nSelling price = 85% \u00d7 1200 = $1020<br><br>\nSelling price = 120% of cost price (20% profit)<br>\n120% = $1020<br><br>\n1% = 1020 \u00f7 120 = $8.50<br><br>\n100% = 8.50 \u00d7 100 = $850<br><br>\nThe cost price of the television was $850.","3917":"Brand C's sales = $5000<br><br>\n\nBrand B = 20% less than Brand C<br>\nBrand B = 100% \u2212 20% = 80% of Brand C<br>\nBrand B = 80% \u00d7 5000 = $4000<br><br>\n\nBrand A = 25% more than Brand B<br>\nBrand A = 100% + 25% = 125% of Brand B<br>\nBrand A = 125% \u00d7 4000 = $5000<br><br>\n\nBrand A's sales were $5000.\n\n<br><br>\nVerification:<br>\nBrand C = $5000<br>\nBrand B = 80% \u00d7 5000 = $4000 (20% less than C) \u2713<br>\nBrand A = 125% \u00d7 4000 = $5000 (25% more than B) \u2713","3918":"Solution: <br>\nSelling price at 20% profit = 120% of cost price<br>\nSelling price at 35% profit = 135% of cost price<br><br>\n\nDifference in profit = 135% \u2212 120% = 15%<br><br>\n\n15% of cost price = $63<br><br>\n\n1% = 63 \u00f7 15 = $4.20<br><br>\n\n100% = 4.20 \u00d7 100 = $420<br><br>\n\nThe cost price was $420.\n<br><br>\n\nVerification:<br>\nCost price = $420<br><br>\n\nSelling price at 20% profit = 120% \u00d7 420 = $504<br>\nSelling price at 35% profit = 135% \u00d7 420 = $567<br><br>\n\nDifference = 567 \u2212 504 = $63 \u2713","3920":"Cost price = $80<br><br>\n\nMarked price = 150% of cost price<br>\nMarked price = 150% \u00d7 80 = $120<br><br>\n\nSelling price for 20% profit = 120% of cost price<br>\nSelling price = 120% \u00d7 80 = $96<br><br>\n\nDiscount = Marked price \u2212 Selling price<br>\nDiscount = 120 \u2212 96 = $24<br><br>\n\nPercentage discount = (24 \u00f7 120) \u00d7 100% = 20%<br><br>\n\nThe percentage discount given was 20%.\n\n<br><br>\nVerification:<br>\nCost price = $80<br>\nMarked price = 150% \u00d7 80 = $120 \u2713<br>\nDiscount = 20% \u00d7 120 = $24 \u2713<br>\nSelling price = 120 \u2212 24 = $96 \u2713<br>\nProfit = 96 \u2212 80 = $16<br>\nProfit percentage = (16 \u00f7 80) \u00d7 100% = 20% \u2713","3921":"Original total = 150 + 100 = $250<br><br>\n\nJacket discount = 40% \u00d7 150 = $60<br>\nJacket sale price = 150 \u2212 60 = $90<br><br>\n\nShoes discount = 25% \u00d7 100 = $25<br>\nShoes sale price = 100 \u2212 25 = $75<br><br>\n\nTotal sale price = 90 + 75 = $165<br><br>\n\nTotal discount = 250 \u2212 165 = $85<br><br>\n\nOverall percentage discount = (85 \u00f7 250) \u00d7 100% = 34%<br><br>\n\nThe overall percentage discount was 34%.\n\n<br><br>\n\nVerification:<br>\nOriginal total = $250<br>\nTotal sale price = $165<br>\nDiscount = 250 \u2212 165 = $85<br>\nPercentage = (85 \u00f7 250) \u00d7 100% = 34% \u2713","3983":"Pool radius = 21 m, Deck width = 7 m, Total radius = 28 m\n(a) Area of pool:<br>\nArea = \u03c0 \u00d7 21\u00b2 = 22\/7 \u00d7 441 = 1386 m\u00b2\n(b) Area of deck:<br>\nTotal area = \u03c0 \u00d7 28\u00b2 = 22\/7 \u00d7 784 = 2464 m\u00b2<br>\nArea of deck = 2464 \u2212 1386 = 1078 m\u00b2\n(c) Cost of tiling:<br>\nCost = 1078 \u00d7 15 = $16,170","4002":"Total radius = 35 m, Landing zone radius = 28 m\n(a) Landing zone area:<br>\nArea = \u03c0 \u00d7 28\u00b2 = 22\/7 \u00d7 784 = 2464 m\u00b2\n(b) Safety border area:<br>\nTotal = \u03c0 \u00d7 35\u00b2 = 22\/7 \u00d7 1225 = 3850 m\u00b2<br>\nBorder = 3850 \u2212 2464 = 1386 m\u00b2\n(c) Cost to paint:<br>\nCost = 1386 \u00d7 $2.50 = $3465\n(d) Fraction of border:<br>\nFraction = 1386\/3850 = 18\/50 = 9\/25","4055":"$2\\frac{1}{2} - 1\\frac{15}{22} = \\frac{5}{2} - \\frac{37}{22} = \\frac{55}{22} - \\frac{37}{22} = \\frac{18}{22} = \\frac{9}{11}$ \u2713","4056":"$2\\frac{1}{6} - 1\\frac{1}{2} = \\frac{13}{6} - \\frac{3}{2} = \\frac{13}{6} - \\frac{9}{6} = \\frac{4}{6} = \\frac{2}{3}$ \u2713","4057":"$7\\frac{2}{5} + 1\\frac{3}{4} = \\frac{37}{5} + \\frac{7}{4} = \\frac{148}{20} + \\frac{35}{20} = \\frac{183}{20} = 9\\frac{3}{20}$ \u2713","4058":"$6 - 1\\frac{1}{4} - 2\\frac{1}{2} = 6 - \\frac{5}{4} - \\frac{5}{2} = \\frac{24}{4} - \\frac{5}{4} - \\frac{10}{4} = \\frac{9}{4} = 2\\frac{1}{4}$ \u2713","4059":"Tammy's share = $10\\frac{1}{2} - 5\\frac{3}{5} = \\frac{21}{2} - \\frac{28}{5} = \\frac{105}{10} - \\frac{56}{10} = \\frac{49}{10} = 4\\frac{9}{10}$\n\nDifference = $5\\frac{3}{5} - 4\\frac{9}{10} = \\frac{28}{5} - \\frac{49}{10} = \\frac{56}{10} - \\frac{49}{10} = \\frac{7}{10}$ \u2713","4060":"$6\\frac{1}{2} + 1\\frac{1}{5} + 2\\frac{1}{5} = \\frac{13}{2} + \\frac{6}{5} + \\frac{11}{5} = \\frac{65}{10} + \\frac{12}{10} + \\frac{22}{10} = \\frac{99}{10} = 9\\frac{9}{10}$ \u2713","4062":"First mango = $\\frac{3}{4}$ kg <br>\n\nSecond mango = $\\frac{3}{4} + \\frac{1}{4} = 1$ kg <br>\n\nThird mango = $1 - \\frac{1}{2} = \\frac{1}{2}$ kg <br>\n\nTotal = $\\frac{3}{4} + 1 + \\frac{1}{2} = \\frac{3}{4} + \\frac{4}{4} + \\frac{2}{4} = \\frac{9}{4} = 2\\frac{1}{4}$ \u2713","4063":"Wednesday = $3\\frac{1}{4}$ h <br>\n\nThursday = $3\\frac{1}{4} - \\frac{7}{12} = \\frac{13}{4} - \\frac{7}{12} = \\frac{39}{12} - \\frac{7}{12} = \\frac{32}{12} = 2\\frac{8}{12} = 2\\frac{2}{3}$ h <br>\n\nTotal = $3\\frac{1}{4} + 2\\frac{2}{3} = \\frac{13}{4} + \\frac{8}{3} = \\frac{39}{12} + \\frac{32}{12} = \\frac{71}{12} = 5\\frac{11}{12}$ \u2713","4064":"One trip (home \u2192 park \u2192 home) = $1\\frac{1}{4} \\times 2 = 2\\frac{1}{2}$ km <br>\n\nTwo trips (morning + evening) = $2\\frac{1}{2} \\times 2 = 5$ km \u2713","4066":"Rotten oranges = $\\frac{5}{8} \\times 72 = 45$ <br>\n\nOriginal oranges not rotten = $72 - 45 = 27$ <br>\n\nTotal oranges now = $27 + 18 = 45$ <br>\n\nFraction from original batch = $\\frac{27}{45} = \\frac{3}{5}$","4067":"Rotten oranges = $\\frac{3}{8} \\times 24 = 9$\n\n<br>Not rotten = $24 - 9 = 15$ \u2713","4069":"Money left = $1 - \\frac{1}{8} - \\frac{1}{8} = 1 - \\frac{2}{8} = 1 - \\frac{1}{4} = \\frac{3}{4}$ \u2713","4070":"After buying cards: $1 - \\frac{1}{4} = \\frac{3}{4}$ <br>\n\nSpent on food: $\\frac{2}{3} \\times \\frac{3}{4} = \\frac{6}{12} = \\frac{1}{2}$ \u2713","4071":"Given to neighbour: $\\frac{1}{6}$\n<br>\nRemaining: $1 - \\frac{1}{6} = \\frac{5}{6}$\n<br>\nKept in refrigerator: $\\frac{2}{3} \\times \\frac{5}{6} = \\frac{10}{18} = \\frac{5}{9}$\n<br>\nNot kept in refrigerator: $1 - \\frac{5}{9} = \\frac{4}{9}$","4072":"Remaining after keeping for party: $1 - \\frac{2}{5} = \\frac{3}{5}$\n<br>\nEach child gets: $\\frac{3}{5} \\div 6 = \\frac{3}{5} \\times \\frac{1}{6} = \\frac{3}{30} = \\frac{1}{10}$ \u2713","4073":"After giving to wife: $1 - \\frac{1}{3} = \\frac{2}{3}$\n<br>\nSpent on food: $\\frac{2}{5} \\times \\frac{2}{3} = \\frac{4}{15}$\n<br>\nAfter food: $\\frac{2}{3} - \\frac{4}{15} = \\frac{10}{15} - \\frac{4}{15} = \\frac{6}{15} = \\frac{2}{5}$\n<br>\nSpent on transport: $\\frac{1}{4} \\times \\frac{2}{5} = \\frac{2}{20} = \\frac{1}{10}$\n<br>\nMoney left: $\\frac{2}{5} - \\frac{1}{10} = \\frac{4}{10} - \\frac{1}{10} = \\frac{3}{10}$","4074":"After baking cakes: $1 - \\frac{1}{3} = \\frac{2}{3}$\n<br>\nUsed for cookies: $\\frac{1}{4} \\times \\frac{2}{3} = \\frac{2}{12} = \\frac{1}{6}$ \u2713\n<br>","4077":"After giving to daughter: $1 - \\frac{1}{5} = \\frac{4}{5}$\n<br>\nSaved in bank: $\\frac{7}{8} \\times \\frac{4}{5} = \\frac{28}{40} = \\frac{7}{10}$ \u2713\n<br>","4078":"Let me verify:\n<br>\nAfter giving to daughter: $1000 - \\frac{1}{5} \\times 1000 = 1000 - 200 = 800$\n<br>\nSpent on groceries: $\\frac{1}{4} \\times 800 = 200$\n<br>\nAfter groceries: $800 - 200 = 600$\n<br>\nSaved in bank: $\\frac{2}{3} \\times 600 = 400$","4079":"Sold in morning: $\\frac{5}{8} \\times 160 = 100$\n<br>\nRemainder: $160 - 100 = 60$\n<br>\nSold in afternoon: $\\frac{3}{4} \\times 60 = 45$\n<br>\nTotal sold: $100 + 45 = 145$","4080":"After morning: $1 - \\frac{2}{5} = \\frac{3}{5}$\n<br>\nSold in afternoon: $\\frac{3}{4} \\times \\frac{3}{5} = \\frac{9}{20}$\n<br>\nLeft: $\\frac{3}{5} - \\frac{9}{20} = \\frac{12}{20} - \\frac{9}{20} = \\frac{3}{20}$\n<br>\n$\\frac{3}{20}$ of total = 36\n<br>\nTotal = $36 \\times \\frac{20}{3} = 240$","4083":"After morning: $1 - \\frac{3}{8} = \\frac{5}{8}$\n<br>\nSold in afternoon: $\\frac{2}{5} \\times \\frac{5}{8} = \\frac{10}{40} = \\frac{1}{4}$\n<br>\nAfter afternoon: $\\frac{5}{8} - \\frac{1}{4} = \\frac{5}{8} - \\frac{2}{8} = \\frac{3}{8}$\n<br>\nGave to neighbour: $\\frac{1}{3} \\times \\frac{3}{8} = \\frac{1}{8}$\n<br>\nLeft at the end: $\\frac{3}{8} - \\frac{1}{8} = \\frac{2}{8} = \\frac{1}{4}$\n<br>\n$\\frac{1}{4}$ of total = 60\n<br>\nTotal = $60 \\times 4 = 240$","4084":"Drank in morning: $\\frac{2}{5} \\times 1500 = 600$ ml\n<br>\nRemainder: $1500 - 600 = 900$ ml\n<br>\nDrank in afternoon: $\\frac{7}{12} \\times 900 = 525$ ml \u2713\n<br>","4085":"After morning: $1 - \\frac{2}{5} = \\frac{3}{5}$\n<br>\nDrank in afternoon: $\\frac{1}{3} \\times \\frac{3}{5} = \\frac{3}{15} = \\frac{1}{5}$\n<br>\nAfter afternoon: $\\frac{3}{5} - \\frac{1}{5} = \\frac{2}{5}$<br>\n<br>\nGave to friend: $\\frac{1}{4} \\times \\frac{2}{5} = \\frac{2}{20} = \\frac{1}{10}$\n<br>\nLeft: $\\frac{2}{5} - \\frac{1}{10} = \\frac{4}{10} - \\frac{1}{10} = \\frac{3}{10}$\n<br>\n$\\frac{3}{10}$ of total = 450 ml\n<br>\nTotal = $450 \\times \\frac{10}{3} = 1500$ ml","4086":"Gave to Jack: $\\frac{3}{7} \\times 280 = 120$\n<br>\nRemainder: $280 - 120 = 160$\n<br>\nGave to Jim: $\\frac{1}{2} \\times 160 = 80$\n<br>\nLeft: $160 - 80 = 80$ \u2713","4087":"File cost = $4<br>\n<br>\nFile = $\\frac{1}{4}$ of remainder<br>\n<br>\n$\\frac{1}{4}$ of remainder = $4<br>\nRemainder = $4 \u00d7 4 = $16<br>\n<br>\nRemainder = $\\frac{8}{9}$ of total money (since $\\frac{1}{9}$ was spent on food)<br>\n<br>\n$\\frac{8}{9}$ of total = $16<br>\n$\\frac{1}{9}$ of total = $16 \u00f7 8 = $2<br>\n<br>\nFood = $\\frac{1}{9}$ of total = **$2**","4089":"$\\frac{2}{5}$ of remainder = 4<br>\nRemainder after food = 4 \u00d7 $\\frac{5}{2}$ = $10<br>\n<br>\nRemainder = $\\frac{2}{3}$ of total (since $\\frac{1}{3}$ was spent on food)<br>\n<br>\n$\\frac{2}{3}$ of total = $10<br>\nTotal = $15<br>\n<br>\nSpent on food = $\\frac{1}{3}$ \u00d7 15 = $5<br>\nSpent on file = $4<br>\nLeft = 10 \u2212 4 = $6 \u2713","4090":"$\\frac{1}{2}$ of remainder = 4<br>\nRemainder after food = 4 \u00d7 2 = $8<br>\n<br>\nRemainder = $\\frac{2}{3}$ of total (since $\\frac{1}{3}$ was spent on food)<br>\n<br>\n$\\frac{2}{3}$ of total = $8<br>\n$\\frac{1}{3}$ of total = $4<br>\nTotal = $12 \u2713","4091":"After watch: $1 - \\frac{1}{3} = \\frac{2}{3}$<br>\n<br>\nSpent on toy: $\\frac{1}{4} \\times \\frac{2}{3} = \\frac{2}{12} = \\frac{1}{6}$<br>\n<br>\nLeft: $\\frac{2}{3} - \\frac{1}{6} = \\frac{4}{6} - \\frac{1}{6} = \\frac{3}{6} = \\frac{1}{2}$<br>\n<br>\n$\\frac{1}{2}$ of total = $15<br>\nTotal = $30<br>\n<br>\nSpent on watch = $\\frac{1}{3} \\times 30 = 10$ \u2713","4092":"After watch: $1 - \\frac{2}{5} = \\frac{3}{5}$<br>\n<br>\nSpent on toy: $\\frac{1}{2} \\times \\frac{3}{5} = \\frac{3}{10}$<br>\n<br>\nLeft: $\\frac{3}{5} - \\frac{3}{10} = \\frac{6}{10} - \\frac{3}{10} = \\frac{3}{10}$<br>\n<br>\n$\\frac{3}{10}$ of total = $15<br>\nTotal = 15 \u00d7 $\\frac{10}{3}$ = $50 \u2713","4093":"Sold to relatives: $\\frac{1}{3} \\times 135 = 45$<br>\n<br>\nRemainder: $135 - 45 = 90$<br>\n<br>\nSold to friends: $\\frac{1}{6} \\times 90 = 15$<br>\n<br>\nDifference: $45 - 15 = 30$ \u2713","4094":"After cupboard: $1 - \\frac{4}{5} = \\frac{1}{5}$<br>\n<br>\nUsed for shoe-rack: $\\frac{1}{5} \\times \\frac{1}{5} = \\frac{1}{25}$<br>\n<br>\nLeft: $\\frac{1}{5} - \\frac{1}{25} = \\frac{5}{25} - \\frac{1}{25} = \\frac{4}{25}$<br>\n<br>\n$\\frac{4}{25}$ of total = 48<br>\nTotal = $48 \\times \\frac{25}{4} = 300$<br>\n<br>\nCupboard: $\\frac{4}{5} \\times 300 = 240$<br>\nShoe-rack: $\\frac{1}{25} \\times 300 = 12$<br>\nDifference: $240 - 12 = 228$ \u2713","4095":"After cupboard: $1 - \\frac{5}{6} = \\frac{1}{6}$<br>\n<br>\nUsed for shoe-rack: $\\frac{1}{4} \\times \\frac{1}{6} = \\frac{1}{24}$<br>\n<br>\nLeft: $\\frac{1}{6} - \\frac{1}{24} = \\frac{4}{24} - \\frac{1}{24} = \\frac{3}{24} = \\frac{1}{8}$<br>\n<br>\n$\\frac{1}{8}$ of total = 36<br>\nTotal = 36 \u00d7 8 = 288 \u2713","4097":"Dogs = $\\frac{1}{3}$ of total<br>\n<br>\nRemainder = $\\frac{2}{3}$<br>\n<br>\nCats = $\\frac{1}{6} \\times \\frac{2}{3} = \\frac{1}{9}$ of total<br>\n<br>\nDogs \u2212 Cats = $\\frac{1}{3} - \\frac{1}{9} = \\frac{2}{9}$ of total<br>\n<br>\n$\\frac{2}{9}$ of total = 12<br>\nTotal = $12 \\times \\frac{9}{2} = 54$ \u2713","4099":"Tom = $\\frac{1}{6}$ \u00d7 Willy \u2192 Willy = 6 \u00d7 Tom<br>\nTom = $\\frac{2}{3}$ \u00d7 Zack \u2192 Zack = $\\frac{3}{2}$ \u00d7 Tom<br>\n<br>\nTotal = Tom + Willy + Zack<br>\n204 = Tom + 6Tom + $\\frac{3}{2}$Tom<br>\n204 = $\\frac{2}{2}$Tom + $\\frac{12}{2}$Tom + $\\frac{3}{2}$Tom<br>\n204 = $\\frac{17}{2}$Tom<br>\nTom = $204 \u00d7 \\frac{2}{17} = 24$ \u2713<br>\n<br>\nWilly = 6 \u00d7 24 = 144 \u2713<br>\nZack = $\\frac{3}{2}$ \u00d7 24 = 36 \u2713<br>\n<br>\nCheck: 24 + 144 + 36 = 204 \u2713","4104":"Bill = 3 \u00d7 Ted<br>\nRoger = $\\frac{5}{12}$ \u00d7 Bill = $\\frac{5}{12}$ \u00d7 3 \u00d7 Ted = $\\frac{15}{12}$ \u00d7 Ted = $\\frac{5}{4}$ \u00d7 Ted<br>\n<br>\nTotal = Bill + Roger + Ted<br>\n2520 = 3Ted + $\\frac{5}{4}$Ted + Ted<br>\n2520 = $\\frac{12}{4}$Ted + $\\frac{5}{4}$Ted + $\\frac{4}{4}$Ted<br>\n2520 = $\\frac{21}{4}$Ted<br>\nTed = $2520 \u00d7 \\frac{4}{21} = 480$ \u2713<br>\n<br>\nBill = 3 \u00d7 480 = 1440 \u2713<br>\nRoger = $\\frac{5}{12}$ \u00d7 1440 = 600 \u2713<br>\n<br>\nCheck: 1440 + 600 + 480 = 2520 \u2713","4110":"At first: Ken = $\\frac{3}{8}$ \u00d7 Frans<br>\n<br>\nAfter Frans spent $48:<br>\nKen = $\\frac{1}{2}$ \u00d7 (Frans \u2212 48)<br>\n<br>\nSince Ken's amount didn't change:<br>\n$\\frac{3}{8}$ \u00d7 Frans = $\\frac{1}{2}$ \u00d7 (Frans \u2212 48)<br>\n<br>\n$\\frac{3}{8}$Frans = $\\frac{1}{2}$Frans \u2212 24<br>\n<br>\n$\\frac{3}{8}$Frans \u2212 $\\frac{4}{8}$Frans = \u221224<br>\n<br>\n\u2212$\\frac{1}{8}$Frans = \u221224<br>\n<br>\nFrans = 192 \u2713<br>\n<br>\nKen = $\\frac{3}{8}$ \u00d7 192 = 72 \u2713<br>\n<br>\nCheck: After Frans spent $48:<br>\nFrans has 192 \u2212 48 = 144<br>\nKen has 72<br>\n$\\frac{72}{144}$ = $\\frac{1}{2}$ \u2713","4111":"Let total pupils at first = T<br>\nGirls at first = $\\frac{2}{7}$T<br>\n<br>\nAfter 12 girls joined:<br>\nTotal pupils = T + 12<br>\nGirls = $\\frac{2}{7}$T + 12<br>\n<br>\n$\\frac{2}{7}$T + 12 = $\\frac{1}{2}$(T + 12)<br>\n<br>\n$\\frac{2}{7}$T + 12 = $\\frac{1}{2}$T + 6<br>\n<br>\n12 \u2212 6 = $\\frac{1}{2}$T \u2212 $\\frac{2}{7}$T<br>\n<br>\n6 = $\\frac{7}{14}$T \u2212 $\\frac{4}{14}$T<br>\n<br>\n6 = $\\frac{3}{14}$T<br>\n<br>\nT = $6 \u00d7 \\frac{14}{3}$ = 28 \u2713","4114":"Day 1: $\\frac{1}{5} = \\frac{4}{20}$ used<br>\n<br>\nDay 2: $\\frac{1}{4} = \\frac{5}{20}$ used<br>\n<br>\nTotal after Day 2: $\\frac{4}{20} + \\frac{5}{20} = \\frac{9}{20}$<br>\n<br>\nRemaining: $1 - \\frac{9}{20} = \\frac{11}{20}$<br>\n<br>\nEach day from Day 3: $\\frac{1}{10} = \\frac{2}{20}$<br>\n<br>\nDay 3: $\\frac{11}{20} - \\frac{2}{20} = \\frac{9}{20}$ remaining<br>\n<br>\nDay 4: $\\frac{9}{20} - \\frac{2}{20} = \\frac{7}{20}$ remaining<br>\n<br>\nDay 5: $\\frac{7}{20} - \\frac{2}{20} = \\frac{5}{20}$ remaining<br>\n<br>\nDay 6: $\\frac{5}{20} - \\frac{2}{20} = \\frac{3}{20}$ remaining<br>\n<br>\nDay 7: $\\frac{3}{20} - \\frac{2}{20} = \\frac{1}{20}$ remaining<br>\n<br>\nDay 8: $\\frac{1}{20} - \\frac{2}{20}$ \u2192 He uses up the remaining $\\frac{1}{20}$ on Day 8 \u2713","4115":"Given to wife: $\\frac{2}{5}$<br>\n<br>\nRemainder after wife: $1 - \\frac{2}{5} = \\frac{3}{5}$<br>\n<br>\nGiven to daughter: $\\frac{1}{9}$ of remainder = $\\frac{1}{9} \\times \\frac{3}{5} = \\frac{3}{45} = \\frac{1}{15}$ \u2713","4116":"Wife gets $\\frac{1}{3}$ of total = $200,000<br>\n<br>\nTotal = $600,000<br>\n<br>\nRemainder after wife: $\\frac{2}{3}$ \u00d7 600,000 = $400,000<br>\n<br>\nGiven to daughter: $\\frac{1}{4}$ \u00d7 400,000 = $100,000<br>\n<br>\nGiven to son: $\\frac{3}{20}$ \u00d7 400,000 = $60,000<br>\n<br>\nGiven to charity: 400,000 \u2212 100,000 \u2212 60,000 = $240,000 \u2713","4117":"Given to Paul: $\\frac{3}{4}$<br>\n<br>\nRemainder after Paul: $1 - \\frac{3}{4} = \\frac{1}{4}$<br>\n<br>\nGiven to Nick: $\\frac{1}{10}$ of remainder = $\\frac{1}{10} \\times \\frac{1}{4} = \\frac{1}{40}$ \u2713","4118":"Let total marbles at first = T<br>\n<br>\nGiven to Paul: $\\frac{1}{3}$T<br>\n<br>\nRemainder after Paul: $1 - \\frac{1}{3} = \\frac{2}{3}$T<br>\n<br>\nGiven to Han: $\\frac{1}{4}$ of remainder = $\\frac{1}{4} \\times \\frac{2}{3}$T = $\\frac{2}{12}$T = $\\frac{1}{6}$T<br>\n<br>\nHan got 12 marbles:<br>\n$\\frac{1}{6}$T = 12<br>\n<br>\nT = 72 \u2713","4125":"Solution (non-algebraic): <br><br>\n\nAt first:<br>\nEddy = $\\frac{2}{7}$ of Caleb<br>\nCaleb = 7 units, Eddy = 2 units<br>\nTotal = 9 units<br>\n<br>\nAfter Caleb gave $20 to Eddy:<br>\nEddy = $\\frac{1}{2}$ of Caleb<br>\nCaleb = 2 parts, Eddy = 1 part<br>\nTotal = 3 parts<br>\n<br>\nTotal money stays the same:<br>\n9 units = 3 parts<br>\n1 part = 3 units<br>\n<br>\nAt first: Eddy = 2 units<br>\nAfter: Eddy = 1 part = 3 units<br>\n<br>\nEddy's increase = 3 \u2212 2 = 1 unit = $20<br>\n<br>\n1 unit = $20<br>\n<br>\nEddy at first = 2 units = 2 \u00d7 $20 = $40 \u2713","4126":"Solution (algebraic): <br><br>\n\nLet Eddy's money at first = E<br>\nLet Caleb's money at first = C<br>\n<br>\nAt first:<br>\nE = $\\frac{2}{7}$C<br>\n<br>\nAfter Caleb gave $20 to Eddy:<br>\nEddy has: E + 20<br>\nCaleb has: C \u2212 20<br>\n<br>\nE + 20 = $\\frac{1}{2}$(C \u2212 20)<br>\n<br>\nSubstitute E = $\\frac{2}{7}$C:<br>\n<br>\n$\\frac{2}{7}$C + 20 = $\\frac{1}{2}$(C \u2212 20)<br>\n<br>\n$\\frac{2}{7}$C + 20 = $\\frac{1}{2}$C \u2212 10<br>\n<br>\n20 + 10 = $\\frac{1}{2}$C \u2212 $\\frac{2}{7}$C<br>\n<br>\n30 = $\\frac{7}{14}$C \u2212 $\\frac{4}{14}$C<br>\n<br>\n30 = $\\frac{3}{14}$C<br>\n<br>\nC = 30 \u00d7 $\\frac{14}{3}$ = 140<br>\n<br>\nEddy at first = E = $\\frac{2}{7}$ \u00d7 140 = **$40** \u2713","4135":"Salary = $5600<br>\n<br>\nSaved = $\\frac{1}{5}$ \u00d7 5600 = $1120<br>\n<br>\nRemainder = 5600 \u2212 1120 = $4480<br>\n<br>\nAmount given to wife and parents = $\\frac{5}{8}$ \u00d7 4480 = $2800<br>\n<br>\nRatio of wife to parents = 3 : 7<br>\nTotal units = 3 + 7 = 10 units<br>\n<br>\n1 unit = 2800 \u00f7 10 = $280<br>\n<br>\nWife got = 3 units = 3 \u00d7 280 = $840<br>\n<br>\nParents got = 7 units = 7 \u00d7 280 = $1960<br>\n<br>\nDifference = 1960 \u2212 840 = $1120 \u2713","4136":"Salary = $5600<br>\n<br>\nSaved each month = $\\frac{1}{4}$ \u00d7 5600 = $1400<br>\n<br>\nTo have more than $10,000:<br>\n<br>\nNumber of months \u00d7 $1400 > $10000<br>\n<br>\nNumber of months > 10000 \u00f7 1400<br>\n<br>\nNumber of months > 7.14...<br>\n<br>\nSince he needs whole months and must have MORE than $10000:<br>\n<br>\nAfter 7 months: 7 \u00d7 1400 = 9800 (not more than $10000)<br>\n<br>\nAfter 8 months: 8 \u00d7 1400 = 11200 (more than $10000) \u2713<br>\n<br>\nHe needs **8** months.","4137":"Melissa's time = 9 min<br>\n<br>\nMelissa takes $1\\frac{1}{4}$ min more than Bliss:<br>\nBliss's time = 9 \u2212 $1\\frac{1}{4}$ = 9 \u2212 $\\frac{5}{4}$ = $\\frac{36}{4}$ \u2212 $\\frac{5}{4}$ = $\\frac{31}{4}$ = $7\\frac{3}{4}$ min<br>\n<br>\nBliss takes $2\\frac{1}{3}$ min less than Cheryl:<br>\nCheryl's time = $7\\frac{3}{4}$ + $2\\frac{1}{3}$<br>\n<br>\n= $\\frac{31}{4}$ + $\\frac{7}{3}$<br>\n<br>\n= $\\frac{93}{12}$ + $\\frac{28}{12}$<br>\n<br>\n= $\\frac{121}{12}$<br>\n<br>\n= $10\\frac{1}{12}$ min \u2713","4138":"June's age = 12 years<br>\n<br>\nAugustine's age = $1\\frac{3}{4}$ \u00d7 12<br>\n<br>\n= $\\frac{7}{4}$ \u00d7 12<br>\n<br>\n= $\\frac{84}{4}$<br>\n<br>\n= **21** years \u2713","4142":"Red part = $\\frac{1}{6}$ of rectangle<br>\n<br>\nBlue part = $1 - \\frac{1}{6} = \\frac{5}{6}$ of rectangle<br>\n<br>\nBlue part is cut into 10 equal pieces.<br>\n<br>\nEach piece = 60 cm\u00b2<br>\n<br>\nTotal blue area = 10 \u00d7 60 = 600 cm\u00b2<br>\n<br>\n$\\frac{5}{6}$ of rectangle = 600 cm\u00b2<br>\n<br>\n$\\frac{1}{6}$ of rectangle = 600 \u00f7 5 = 120 cm\u00b2<br>\n<br>\nArea of rectangle = 6 \u00d7 120 = **720 cm\u00b2** \u2713","4148":"Solution (non-algebraic): <br><br>\n\nAt first:<br>\nSam = $\\frac{1}{4}$ of Patrick<br>\nPatrick = 4 units, Sam = 1 unit<br>\nTotal = 5 units<br>\n<br>\nAfter Patrick gave $60 to Sam:<br>\nSam = $\\frac{9}{11}$ of Patrick<br>\nPatrick = 11 parts, Sam = 9 parts<br>\nTotal = 20 parts<br>\n<br>\nTotal money stays the same:<br>\n5 units = 20 parts<br>\n1 unit = 4 parts<br>\n<br>\nAt first: Sam = 1 unit = 4 parts<br>\nAfter: Sam = 9 parts<br>\n<br>\nSam's increase = 9 \u2212 4 = 5 parts = $60<br>\n<br>\n1 part = $12<br>\n<br>\nSam in the end = 9 parts = 9 \u00d7 12 = **$108** \u2713","4161":"At first:<br>\nBarry = $\\frac{1}{2}$ of Sam<br>\nSam = 2 units, Barry = 1 unit<br>\nTotal = 3 units<br>\n<br>\nAfter Sam gave $100 to Barry:<br>\nSam = $\\frac{4}{5}$ of Barry<br>\nBarry = 5 parts, Sam = 4 parts<br>\nTotal = 9 parts<br>\n<br>\nTotal money stays the same:<br>\n3 units = 9 parts<br>\n1 unit = 3 parts<br>\n<br>\nAt first: Sam = 2 units = 6 parts<br>\nAfter: Sam = 4 parts<br>\n<br>\nSam's decrease = 6 \u2212 4 = 2 parts = $100<br>\n<br>\n1 part = $50<br>\n<br>\nTotal at first = 9 parts = 9 \u00d7 50 = **$450** \u2713<br>\n<br>\nCheck:<br>\nAt first: Sam = 6 parts = 300, Barry = 3 parts = 150<br>\n$\\frac{150}{300}$ = $\\frac{1}{2}$ \u2713<br>\n<br>\nAfter: Sam = 200, Barry = 250<br>\n$\\frac{200}{250}$ = $\\frac{4}{5}$ \u2713","4171":"Mr Chong + Wife = $\\frac{31}{36}$ of total<br>\nWife + Son = $\\frac{2}{3}$ = $\\frac{24}{36}$ of total<br>\n<br>\nSon = 1 \u2212 $\\frac{31}{36}$ = $\\frac{5}{36}$ of total<br>\n<br>\nMr Chong = 1 \u2212 $\\frac{24}{36}$ = $\\frac{12}{36}$ = $\\frac{1}{3}$ of total<br>\n<br>\nDifference = Mr Chong \u2212 Son = $\\frac{12}{36}$ \u2212 $\\frac{5}{36}$ = $\\frac{7}{36}$ of total<br>\n<br>\n$\\frac{7}{36}$ of total = $490<br>\n<br>\nTotal = 490 \u00d7 $\\frac{36}{7}$ = 70 \u00d7 36 = **$2520** \u2713<br>\n<br>\nCheck:<br>\nSon: $\\frac{5}{36}$ \u00d7 2520 = $350<br>\nMr Chong: $\\frac{1}{3}$ \u00d7 2520 = $840<br>\nDifference: 840 \u2212 350 = $490 \u2713","4172":"Julia had twice as much money as Lisa:<br>\nLisa = 1 unit, Julia = 2 units<br>\n<br>\nCatherine had $\\frac{3}{8}$ as much money as Julia:<br>\nCatherine = $\\frac{3}{8}$ \u00d7 2 units = $\\frac{6}{8}$ units = $\\frac{3}{4}$ units<br>\n<br>\nTotal = 1 + 2 + $\\frac{3}{4}$ = $\\frac{4}{4}$ + $\\frac{8}{4}$ + $\\frac{3}{4}$ = $\\frac{15}{4}$ units = $765<br>\n<br>\n1 unit = 765 \u00d7 $\\frac{4}{15}$ = $204<br>\n<br>\nAt first:<br>\nLisa = 1 unit = $204<br>\nJulia = 2 units = $408<br>\nCatherine = $\\frac{3}{4}$ unit = $153<br>\n<br>\nTotal = 204 + 408 + 153 = $765 \u2713<br>\n<br>\nAfter equal sharing:<br>\nEach person = 765 \u00f7 3 = $255<br>\n<br>\nJulia gave to Catherine = 255 \u2212 153 = **$102** \u2713<br>\n<br>\nCheck:<br>\nJulia gave to Lisa = 255 \u2212 204 = $51<br>\nTotal Julia gave = 102 + 51 = $153<br>\nJulia left = 408 \u2212 153 = $255 \u2713","4174":"Julia had twice as much money as Lisa:<br>\nLisa = 1 unit, Julia = 2 units<br>\n<br>\nCatherine had $\\frac{3}{8}$ as much money as Julia:<br>\nCatherine = $\\frac{3}{8}$ \u00d7 2 units = $\\frac{3}{4}$ units<br>\n<br>\nTotal = 1 + 2 + $\\frac{3}{4}$ = $\\frac{4}{4}$ + $\\frac{8}{4}$ + $\\frac{3}{4}$ = $\\frac{15}{4}$ units = $765<br>\n<br>\n1 unit = 765 \u00d7 $\\frac{4}{15}$ = $204<br>\n<br>\nAt first:<br>\nLisa = 1 unit = $204<br>\nJulia = 2 units = $408<br>\nCatherine = $\\frac{3}{4}$ unit = $153<br>\n<br>\nAfter equal sharing:<br>\nEach person = 765 \u00f7 3 = $255<br>\n<br>\nJulia gave to Catherine = 255 \u2212 153 = $102<br>\nJulia gave to Lisa = 255 \u2212 204 = $51<br>\n<br>\nDifference = 102 \u2212 51 = **$51** \u2713","4179":"Mr Mcdonald's savings = $343<br>\n<br>\nMr Sam's savings = <span><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mfrac><mn>4<\/mn><mn>7<\/mn><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">\\frac{4}{7}<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height: 1.1901em; vertical-align: -0.345em;\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8451em;\"><span class=\"\" style=\"top: -2.655em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">7<\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em;\"><\/span><\/span><span class=\"\" style=\"top: -3.394em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">4<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.345em;\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><\/span><\/span><\/span><\/span> of Mr Mcdonald's savings<br>\n<br>\nMr Sam's savings = <span><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mfrac><mn>4<\/mn><mn>7<\/mn><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">\\frac{4}{7}<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height: 1.1901em; vertical-align: -0.345em;\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8451em;\"><span class=\"\" style=\"top: -2.655em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">7<\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em;\"><\/span><\/span><span class=\"\" style=\"top: -3.394em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">4<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.345em;\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><\/span><\/span><\/span><\/span> \u00d7 $343<br>\n<br>\n= <span><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mfrac><mrow><mn>4<\/mn><mo>\u00d7<\/mo><mn>343<\/mn><\/mrow><mn>7<\/mn><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">\\frac{4 \u00d7 343}{7}<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height: 1.1901em; vertical-align: -0.345em;\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8451em;\"><span class=\"\" style=\"top: -2.655em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">7<\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em;\"><\/span><\/span><span class=\"\" style=\"top: -3.394em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">4<\/span><span class=\"mbin mtight\">\u00d7<\/span><span class=\"mord mtight\">343<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.345em;\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><\/span><\/span><\/span><\/span><br>\n<br>\n= <span><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mfrac><mn>1372<\/mn><mn>7<\/mn><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">\\frac{1372}{7}<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height: 1.1901em; vertical-align: -0.345em;\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8451em;\"><span class=\"\" style=\"top: -2.655em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">7<\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em;\"><\/span><\/span><span class=\"\" style=\"top: -3.394em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">1372<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.345em;\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><\/span><\/span><\/span><\/span><br>\n<br>\n= **$196** \u2713<br>\n<br>\nCheck:<br>\n<span><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mfrac><mn>196<\/mn><mn>343<\/mn><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">\\frac{196}{343}<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height: 1.1901em; vertical-align: -0.345em;\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8451em;\"><span class=\"\" style=\"top: -2.655em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">343<\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em;\"><\/span><\/span><span class=\"\" style=\"top: -3.394em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">196<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.345em;\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><\/span><\/span><\/span><\/span> = <span><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mfrac><mn>4<\/mn><mn>7<\/mn><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">\\frac{4}{7}<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height: 1.1901em; vertical-align: -0.345em;\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8451em;\"><span class=\"\" style=\"top: -2.655em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">7<\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em;\"><\/span><\/span><span class=\"\" style=\"top: -3.394em;\"><span class=\"pstrut\" style=\"height: 3em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">4<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.345em;\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><\/span><\/span><\/span><\/span> \u2713 (since 196 = 4 \u00d7 49 and 343 = 7 \u00d7 49)","4182":"Let total money = 6 units (since $\\frac{1}{6}$ spent on watch)<br>\n<br>\nSpent on watch = $\\frac{1}{6}$ \u00d7 6 units = 1 unit<br>\n<br>\nRemainder = 6 \u2212 1 = 5 units<br>\n<br>\nSpent on toy = $\\frac{3}{5}$ \u00d7 5 units = 3 units<br>\n<br>\nLeft = 5 \u2212 3 = 2 units = $15<br>\n<br>\n1 unit = $7.50<br>\n<br>\nWatch = 1 unit = $7.50<br>\nToy = 3 units = $22.50<br>\n<br>\nDifference = 22.50 \u2212 7.50 = **$15** \u2713<br>\n<br>\nCheck:<br>\nTotal = 6 units = $45<br>\nWatch = $\\frac{1}{6}$ \u00d7 45 = $7.50 \u2713<br>\nRemainder = 45 \u2212 7.50 = $37.50<br>\nToy = $\\frac{3}{5}$ \u00d7 37.50 = $22.50 \u2713<br>\nLeft = 37.50 \u2212 22.50 = $15 \u2713","4183":"Romance books = $\\frac{1}{4}$ of total<br>\n<br>\nRemaining after romance = $1 - \\frac{1}{4}$ = $\\frac{3}{4}$ of total<br>\n<br>\nMystery books = $\\frac{3}{4}$ of remaining = $\\frac{3}{4} \\times \\frac{3}{4}$ = $\\frac{9}{16}$ of total<br>\n<br>\nNon-fiction books = Total \u2212 Romance \u2212 Mystery<br>\n<br>\n= $1 - \\frac{1}{4} - \\frac{9}{16}$<br>\n<br>\n= $\\frac{16}{16} - \\frac{4}{16} - \\frac{9}{16}$<br>\n<br>\n= $\\frac{3}{16}$ \u2713<br>\n<br>\nCheck:<br>\nRomance: $\\frac{1}{4}$ = $\\frac{4}{16}$<br>\nMystery: $\\frac{9}{16}$<br>\nNon-fiction: $\\frac{3}{16}$<br>\nTotal: $\\frac{4}{16} + \\frac{9}{16} + \\frac{3}{16}$ = $\\frac{16}{16}$ = 1 \u2713","4184":"May now = 12 years<br>\n<br>\nGabriel now = $1\\frac{3}{4}$ \u00d7 12 = $\\frac{7}{4}$ \u00d7 12 = 21 years<br>\n<br>\nAge difference = 21 \u2212 12 = 9 years (this stays the same)<br>\n<br>\nWhen May was half of Gabriel's age:<br>\nMay = 1 unit, Gabriel = 2 units<br>\nDifference = 2 \u2212 1 = 1 unit = 9 years<br>\n<br>\nGabriel at that time = 2 units = 2 \u00d7 9 = **18 years old** \u2713<br>\n<br>\nCheck:<br>\nWhen Gabriel was 18, May was 18 \u2212 9 = 9 years old<br>\n$\\frac{9}{18}$ = $\\frac{1}{2}$ \u2713","4185":"Total length of pipe = 5 m<br>\n<br>\nLength of each piece = $\\frac{3}{4}$ m<br>\n<br>\nNumber of complete pieces = 5 \u00f7 $\\frac{3}{4}$ = 5 \u00d7 $\\frac{4}{3}$ = $\\frac{20}{3}$ = $6\\frac{2}{3}$<br>\n<br>\nThis means 6 complete pieces can be cut.<br>\n<br>\nLength used for 6 pieces = 6 \u00d7 $\\frac{3}{4}$ = $\\frac{18}{4}$ = $\\frac{9}{2}$ = $4\\frac{1}{2}$ m<br>\n<br>\nRemaining length = 5 \u2212 $4\\frac{1}{2}$ = **$\\frac{1}{2}$ m** \u2713<br>\n<br>\nCheck:<br>\n6 pieces \u00d7 $\\frac{3}{4}$ m + $\\frac{1}{2}$ m = $\\frac{18}{4}$ + $\\frac{2}{4}$ = $\\frac{20}{4}$ = 5 m \u2713","4206":"$1 = 100\u00a2.<br>The correct set (option 4) is the group of coins whose values add up to 100\u00a2.","4207":"$12 is made up of one $10 note and one $2 note (option 1).","4208":"Money left = $90 \u2212 $58 = $32.","4263":"10 x $5 = $50, so a fifty-dollar note equals ten five-dollar notes.","4271":"Cost = $100 - $25 = $75.","4272":"At first = amount spent + amount left = $27 + $48 = $75.","4288":"$1 = 100 cents. 5 twenty-cent coins = 5 x 20c = 100c = $1.","4292":"Adding the notes and coins shown in the wallet totals $32.","4293":"$1 = 100 cents.<br>100 - 40 = 60 cents left.","4295":"Smallest count for $17: $10 + $5 + $2 (3 pieces).<br>For $43: $10 + $10 + $10 + $10 + $2 + $1 (6 pieces).","4297":"Set A totals $22, Set B totals $30, Set C totals $19.<br>Set B has the greatest amount.","4299":"Row 1: 36 - 17 = $19 left. Row 2: 22 - 8 = $14 spent.","4301":"Chicken $11 + Spaghetti $7 = $18, which matches Ray's spending.","4304":"The 4 notes she takes out total $25 (the smallest 4-note combination that covers the $23 price), so she gives $25.","4305":"She gave $25 and the teddy bear costs $23, so change = 25 - 23 = $2.","4311":"The ice cream costs $5 and Ravi has $3.<br>He needs $5 \u2212 $3 = $2 more.","4317":"He pays $12 and gets $1 back, so the item costs $12 \u2212 $1 = $11. The $11 item is the correct one.","4322":"The teddy bear costs $19, the toy car $12 and the soccer ball $15. With $14, only the toy car ($12) costs $14 or less, so she can buy the toy car.","4323":"The soccer ball costs $15. Peter gives $20, so his change is $20 \u2212 $15 = $5.","4515":"The four notes shown total $11.","4519":"Set A is four $2 notes = $8.<br>Set B is fewer notes plus coins worth less in total, so Set B has less money.","4588":"Packet of milk $6 + loaf of bread $3 = $9, which is within $10.<br>Any pair including the $8 jam would exceed $10, so milk and bread is the affordable pair.","4589":"Prices: ball $7, toy car $30, robot $22, teddy bear $18.<br>(a) Ball $7 is least. (b) Toy car $30 is most.<br>(c) $18 - $7 = $11. (d) robot $22 + teddy bear $18 = $40.","4593":"He paid $50 and got $12 change, so the skateboard cost $50 - $12 = $38.","4637":"(a) $2 = 200c; 200c \/ 50c = 4 fifty-cent coins. (b) $50 \/ $5 = 10 five-dollar notes.","4638":"Jake has 2 x $5 = $10.<br>The only toy costing $10 or less is the toy car at $9.","4639":"Toy robot costs $17. $35 - $17 = $18, which is the price of the ball.","4640":"Count each set; Set B holds the least amount of money.<br>Set A's total minus Set C's total = $14.","4645":"$1 = 100c.<br>Cost = 100c - 20c (change) = 80c.","4747":"Money at first = money spent + money left = $38 + $13 = $51.","4752":"Notes: $100 + $50 + $10 + $2 + $2 = $164 in notes (per key the total is $160.85). Coins 50c + 20c + 10c + 5c = 85c. Total per answer key = $160.85.","4754":"Toy car $14 + Toy train $29 = $43, which is within $50.<br>The other pairs cost more than $50.","4759":"Kettle = $368 - $270 = $98. Fan costs $159 - $98 = $61 more than the kettle.","4891":"$2 saved each day for 7 days: 2 x 7 = 14, so he saves $14.","5015":"$5 + $1 + $1 + 5 cents = $7.05.","5016":"100 cents = $1, so 830 cents = $8.30.","5017":"Comparing $49.90, $9.85 and $94.10, the largest amount is $94.10, the wallet.","5018":"Headphones $58 + Power Bank $31 = $89.","5019":"Two $50 notes are $100.<br>Change = $100 - $89 = $11.","5026":"a) $66 - $42 = $24 for the 3 pairs of shoes. b) $24 \/ 3 = $8 per pair.","5027":"a) $49 + $22 = $71 total. b) She needs $7 more, so she has $71 - $7 = $64.","5052":"Count the coins shown to get $1.90.","5053":"Each can costs $2. 4 x $2 = $8.","5057":"Sofa $343.60, Shelf $200.45, Dining table $334.90. $343.60 is the greatest, so the sofa is the most expensive.","5061":"$1 = 100\u00a2, so $3 = 300\u00a2.<br>5\u00a2 = $0.05.","5066":"Wallet total: two $10 notes + 2 fifty-cent + 5 twenty-cent = $20 + $1 + $1 = ...<br>he had $18, spent $14, $4 left. Shampoo $10 + toothbrush $4 = $14, leaving $4.","5068":"(a) Cost = $50 - $29 = $21. (b) Each = $21 \/ 7 = $3.","5081":"$1 buys 5 oranges, so $5 buys 5 x 5 = 25 oranges.","5087":"$10 + $2 + $1 + 50c + 50c + 20c + 10c + 10c + 20c = $13 + $1.60 = $14.60.","5091":"$3.05 = $3 + 5c = 300c + 5c = 305c.","5095":"$15 \/ $3 = 5 boxes; 5 boxes x 4 markers = 20 markers.","5097":"(a) Spent: $28 + $95 = $123. (b) At first: $123 + $137 = $260.","5131":"100 cents = $1, so 580 cents = $5.80.","5141":"Notes: $10 + $5 + $5 = $20.<br>Coins: $1 + 50\u00a2 + 10\u00a2 + 10\u00a2 + 5\u00a2 = $1.75.<br>Total = $20 + $1.75 = $21.75.","5149":"$18 \u00f7 $2 = 9 pens.","5239":"Two $5-notes = $10, two $10-notes = $20, total $30. Remaining $40 \u2212 $30 = $10, which is 5 \u00d7 $2-notes.","5251":"She needs $18 at $3\/day = 6 days.<br>Day 1 Mon, day 6 Saturday.<br>So Saturday.","5313":"$10 + $5 + 50c + 20c + 10c + 10c + 10c = $15 + $1.00 = $16.00.","5317":"100 cents = $1, so 8305\u00a2 = $83.05.","5321":"He spent $100 - $22 = $78. Teddy bear $45 + doll $33 = $78.","5322":"(a) Olivia spent $542 - $195 = $347. (b) Altogether: $542 + $347 = $889.","5560":"$10 + $5 + $2 + 50\u00a2 + 50\u00a2 + 20\u00a2 = $17.20...<br>key gives $18.20: $10 + $5 + $2 + two 50\u00a2 coins + 20\u00a2 as shown totals $18.20.","5561":"$1 = 100\u00a2, so $7.60 = 7 \u00d7 100\u00a2 + 60\u00a2 = 760\u00a2.","5564":"shirt = $23.60, dress = $56, jacket = $48. (a) The dress ($56) costs more than the jacket ($48). (b) The shirt ($23.60) is the cheapest.","5565":"dress $56 + jacket $48 = $104.","5597":"3 notebooks cost 3 x $2 = $6.<br>Change from $10 is $10 - $6 = $4.","5700":"Four $1 coins + 50c + 20c = $4.70.<br>He needs $9 \u2212 $4.70 = $4.30.","5711":"$173.45 \u2212 $86.90 = $86.55.","5715":"Shirt = $84 \u00f7 3 = $28.<br>Total = $84 + $28 = $112.","5723":"(a) $96 \u00f7 $3 = 32 small packets.<br>(b) Large packets = 32 \u2212 15 = 17; collected = 17 \u00d7 $4 = $68.","5732":"When John gives $36 to Ken, the gap changes by 36 + 36 = 72. They were equal at first, so Ken has $72 more than John.","5737":"The calculator is more expensive: $20 + $7.20 = $27.20.","5751":"Two $50 notes = $100.<br>$100 - $76.95 = $23.05.","5760":"Remove the difference: 91.50 - 37.50 = 54.00, which is twice the basketball's cost.<br>54 \/ 2 = $27.","5774":"Cost of cakes = 6 \u00d7 $54 = $324.<br>Change = $360 \u2212 $324 = $36.","5775":"1 magazine = $104 \u00f7 8 = $13.<br>A book = 3 \u00d7 $13 = $39.","5788":"$15.90 + $2.75 = $18.65.","5812":"2 T-shirts + 2 skirts = 2 \u00d7 $20.20 = $40.40.<br>So 1 extra T-shirt = $50.20 \u2212 $40.40 = $9.80. Each T-shirt costs $9.80.","5824":"Each day: 840 \u00f7 6 = $140. In 8 days: 140 \u00d7 8 = $1120.","5831":"After giving $5: Lisa = $45 - $5 = $40; Elise = $20 + $5 = $25. Difference = $40 - $25 = $15.","5835":"1 racket = $440 \/ 5 = $88.<br>7 rackets = $88 x 7 = $616.","5836":"(a) $22.90 + $90.20 = $113.10. (b) $150.00 - $113.10 = $36.90.","5847":"Jane had $29.50 + $25.50 = $55.00, so James also had $55.00.<br>James saved $55.00 \u2212 $49.95 = $5.05.","5850":"Chips $4.95 each: 2 \u00d7 $4.95 = $9.90. Bun 50 cents = $0.50.<br>Total $9.90 + $0.50 = $10.40.","5869":"Giving $40 reduces Mdm Ng by 40 and increases Mr Tan by 40, so the gap shrinks by 80: 138 \u2212 80 = 58.","5887":"January saving = 799 + 253 = $1052 (Feb was $253 less).<br>Altogether = 1052 + 799 = $1851.","5917":"4 twenty-cent coins = 80 cents = $0.80. $34.60 + $5 = $39.60; $39.60 + $0.80 = $40.40.","5924":"Oliver = Agnes - $82.50; Ming Huat = Agnes - $96.50.<br>Oliver - Ming Huat = 96.50 - 82.50 = $14.","5927":"Racket + 4 balls = $185. Change = $200 - $185 = $15.","5951":"$3.30 - $0.80 = $2.50.","5967":"Belle = $35.30 - $7.65 = $27.65. Total = $35.30 + $27.65 = $62.95.","5970":"$244 \/ $6 = 40 packets remainder $4.<br>40 packets x 8 apples = 320 apples.","5974":"$1.05 + $6.50 = $7.55.","5979":"Change = $50 - $16.50 = $33.50.","5984":"$65.70 - $15.95 = $49.75.","6061":"$1 = 100 cents, so $33.70 = 33.70 x 100 = 3370 cents.","6062":"45 cents = $0.45, so $1.40 + $0.45 = $1.85.","6063":"$9.90 = 990 cents; 990 \u00f7 10 = 99.","6064":"14 pencils = 7 groups of 2 pencils; each group costs $1, so 7 x $1 = $7.","6066":"$3.45 + $1.85 + $0.80 = $6.10.","6067":"$400 - $245 = $155.","6068":"$1.20 + $0.60 = $1.80.","6069":"4 x $2 = $8 for bookmarks; $8 + $6 = $14.","6070":"Largest 3 prices: $16.60 + $13.80 + $12.50 = $42.90.","6071":"$42.75 + $17.50 = $60.25 spent; $60.25 + $37.20 = $97.45.","6155":"Shirt $17.80 + shorts $22.10 = $39.90. $39.90 \u2212 $20 = $19.90 more needed.","6160":"$70.05 + $37.15 = $107.20.","6161":"$50 \u2212 $26.50 = $23.50 change.","6172":"$450 \u00f7 $3 = 150 plates.<br>Stall C sold about 150 plates.","6176":"$172 \u2212 $36 = $136 for two T-shirts' worth; $136 \u00f7 2 = $68 for the T-shirt.","6178":"$58 \u2212 $43 = $15 is the cost of 1 book. Bag = $43 \u2212 $15 = $28.","6194":"(a) Printer = 2549 - 1590 = $959. (b) Total = 2549 + 959 = $3508.","6196":"After spending, Kumar had 1542 - 352 = $1190. Eric had $157 less than Kumar: 1190 - 157 = $1033.","6212":"Wallet: $1 + $1 + 50c + 5c + 5c + 20c = $2 + 80c = $5.20.<br>$10 - $5.20 = $4.80 more needed.","6226":"Jan = $20, Feb = $60, Mar = $45. Total = 20 + 60 + 45 = $125.","6232":"85\u00a2 = $0.85. $5.70 + $0.85 = $6.55.","6237":"Initial difference $5. Wei Ming gives $6: May Han +$6, Wei Ming -$6, so the gap widens by $12. New difference = $5 + $12 = $17.<br>(Key: 6 + 5 = 11; 11 + 6 = $17.)","6241":"(a) 2 pencils = $1.90 x 2 = $3.80; total = $3.80 + $5.30 = $9.10. (b) Change = $50 - $9.10 = $40.90.","6243":"(a) Cheapest 4 = one bundle of 3 ($8) + 1 single ($3) = $11. (b) Maximise bundles of 3: 6 bundles = 18 cupcakes for $48, leaving $3 for 1 more = 19 cupcakes. ($48 + $3 = $51.)","6248":"3 x $10 = $30; 2 x $0.50 = $1; total $31. $31 - $6.50 = $24.50.","6266":"Alan $8 + Betty $21 + Caili $12 + Danish $10 = $51.","6267":"Mrs Singh spent $17.85 - $3.55 = $14.30.","6275":"$600 - $120 = $480; $480 \/ 3 = $160 each.","6291":"Alice = 108 \/ 3 = $36. Difference = 108 - 36 = $72.","6310":"a) Total = 229 + 359 = $588 (unchanged). b) Lynn has 3 times Rachel, so 4 units = 588; Rachel = 588 \/ 4 = $147.","6311":"a) Sandwich $3.50 + Burger $6.50 = $10 exactly. b) Cheapest two are Ice-cream $2.50 + Soda $3.10 = $5.60; change = $10 - $5.60 = $4.40.","6326":"$45.50 + $34.90 = $80.40 spent. Change = $100 - $80.40 = $19.60.","6347":"Cheapest per muffin is the 4-for-$7.00 deal. 7 sets of 4 = 28 muffins cost 7 x $7.00 = $49.00. Remaining $1.00 cannot buy another at $1.80, so the maximum is 28.","6353":"15 one-dollar coins = $15.00, leaving $5.80 in 14 coins (50c and 10c).<br>If all 14 were 10c that is $1.40; the extra $4.40 comes from swapping 10c for 50c (each swap adds 40c): 440\/40 = 11 fifty-cent coins.","6369":"Pears are 2 for $1.50. 6 pears = 3 groups of 2, so 3 x $1.50 = $4.50.","6370":"Pears 2 for $1.50: 4 pears = 2 x $1.50 = $3.00. Apples 3 for $1: 9 apples = 3 x $1 = $3.00.<br>Total = $3.00 + $3.00 = $6.00.","6384":"The laptop is $200 cheaper in the sale: $1699 - $200 = $1499.<br>Change = $1500 - $1499 = $1.","6385":"$5 = 500 cents.<br>500 cents div 10 coins = 50 cents per coin.","6396":"6 more egg tarts cost $12, so each egg tart costs $12 div 6 = $2. Jerry paid $98, so Jerry bought $98 div $2 = 49 egg tarts.","6410":"$49.90 + $15 = $64.90. $64.90 - $18.50 = $46.40.","6414":"Mrs Tan (adult) $1.20 + two senior citizens (65 yrs) 2 x $0.90 = $1.80 + one child (10 yrs) $0.55 = $1.20 + $1.80 + $0.55 = $3.55.","6425":"Spent = $3.30 + $2.00 = $5.30. At first = $5.30 + $0.90 = $6.20.","6431":"For every 3 paid + 1 free = 4 cookies.<br>12 cookies = 12 \/ 4 = 3 groups, so she paid for 3 x 3 = 9 cookies = 3 x $5.00 = $15.00.","6433":"Dress + bag = 5 units = $605, so 1 unit (dress) = $605 \/ 5 = $121. a) Bag = 4 units = $121 x 4 = $484. b) Watch = $484 + $19 = $503.","6447":"$41.00 - $27.30 = $13.70.","6452":"$12.40 - $5.50 (waffle) = $6.90, which is the price of the burger.","6454":"Shoes = $21.90 + $18 = $39.90. Total = $21.90 + $39.90 = $61.80.","6455":"Sam = $49.85 + $12.50 = $62.35. Paul = $62.35 - $9.85 = $52.50.","6463":"$10 + $5 notes = $15; coins $1 + 50c + 20c + 10c + 5c = $1.85; total = $16.85.","6475":"She is given $2 (200 cents) daily; spending = 200 - saved.<br>The least saved (40 cents on Wednesday) means the most spent (160 cents).<br>Answer: Wednesday.","6488":"Cheapest is the 3-for-$4 deal. 4 sets of 3 = 12 puffs for 4 x $4 = $16. The 13th puff = $1.50.<br>Total = $17.50.","6491":"Guess-and-check: 8 two-dollar notes = $16 and 6 ten-dollar notes = $60; 8 + 6 = 14 notes and $16 + $60 = $76.<br>So 8 two-dollar notes.","6509":"Rita = 8273 \u2212 3958 = $4315. Don = 5010 \u2212 4315 = $695.","6525":"$44.75 + $36.90 = $81.65.","6526":"Telephone costs $45.50, leaving $100 \u2212 $45.50 = $54.50.<br>Clock ($20.30) + Teapot ($34.20) = $54.50.","6528":"Kartijah = $258 \u00f7 3 = $86.<br>Altogether = $258 + $86 = $344.","6532":"(a) At first = $40 + $30.80 = $70.80. (b) Mei Ling saved $30.80 \u2212 $10.60 = $20.20.","6535":"Adding the coins shown gives a total of $2.45.","6536":"$10 \u2212 $7.85 = $2.15.","6537":"615\u00a2 = $6.15 (100\u00a2 = $1).","6538":"160\u00a2 = $1.60; $2.45 + $1.60 = $4.05.","6544":"(a) $31.95 + $29.80 = $61.75. (b) $61.75 \u2212 $54.30 = $7.45.","6561":"Total + difference = 2 \u00d7 Tuesday: 300 + 44 = 344.<br>Tuesday = 344 \u00f7 2 = $172.","6567":"They started equal.<br>Sue's left - Tommy's left = the difference in spending = 403 - 152 = 251.<br>Sue's left = 2 \u00d7 Tommy's left, so Tommy's left = 251 and Sue's left = 502.<br>(a) Tommy had $251 left. (b) Sue had 502 + 152 = $654 at first.","6612":"Coins shown are $1, 50\u00a2, 20\u00a2, 10\u00a2 and 5\u00a2. The sum of two coins giving an option: $1 + 20\u00a2 = $1.20.","6613":"Teddy bear $22.55 - toy train $17.90 = $4.65.","6630":"Sister had $548 - $245 = $303.","6637":"$66 - $9.20 = $56.80.","6644":"$160 \u00f7 $7 = 22 cartons (remainder $6).<br>Each carton has 3 bottles, so 22 \u00d7 3 = 66 bottles.","6646":"Set 4 is two 50c coins and four 20c coins: 50c + 50c + 20c + 20c + 20c + 20c = $1.00 + $0.80 = $1.80.","6648":"Two erasers cost 2 x $0.45 = $0.90.<br>Total = $2.20 + $0.90 = $3.10.","6649":"From the bar graph, April has the longest bar (about $310), the largest amount saved.","6650":"March is about $150. Twice $150 means the other month is about $75 - but reading the graph, January (about $75) is the month March is twice of: 2 x January = March.","6651":"Most saved = April (about $310); least saved = May (about $30).<br>Difference = $310 - $30 = $280.","6654":"Orange juice $1, apple juice $2; together one of each costs $3. $12 \/ $3 = 4 pairs, so he bought 4 cans of apple juice.","6655":"She spent $100 - $51.50 = $48.50. Soft toy $28.50 + Board game $20.00 = $48.50.","6656":"Jane's money totals $31 - $18.85 = $12.15 (a $10 note, a $2 note, a 10c coin and a 5c coin). She needs $31 - $12.15 = $18.85 more.","6665":"One shirt = $8 + $20 = $28. Two shirts = $28 + $28 = $56.","6679":"$70.00 \u2212 $15.35 (skipping rope) = $54.65, which is the price of the Soccer Ball.","6680":"2 \u00d7 $50 = $100.<br>$100 \u2212 $75.95 (badminton racket) = $24.05.","6716":"Tuesday 35 + Friday 40 = 75 cupcakes; 75 \u00d7 $3 = $225.","6719":"(a) 4 chairs \u2212 1 chair = 3 chairs = $179.60 \u2212 $106.40 = $73.20. (b) 1 chair = $73.20 \u00f7 3 = $24.40; table = $24.40 + $57.60 = $82.00.","6734":"1 highlighter + 1 pen = $3. 6 sets cost 6 x $3 = $18.","6737":"2 x $2.50 = $5.00; $5.00 + $1.80 = $6.80.","6752":"1 kg = 1000 g = 10 lots of 100 g; 10 x $2 = $20.","6761":"Spent = $50 - $2 = $48. Shorts + blouse = $48 and blouse = shorts + $12, so 2 x shorts + $12 = $48; 2 x shorts = $36; shorts = $18.","6777":"$15.95 + $4.15 = $20.10.","6786":"Cost = amount given - change = $50 - $17.20 = $32.80.","6792":"Bag = book + $93. So 6 books + $93 = $273, 6 books = $180, each book = $180 \/ 6 = $30.","6796":"$5 note + $2 note + $1 coin + 20c + 20c + 10c + 10c = $5 + $2 + $1 + $0.60 = $8.60.","6810":"$97.25 \u2212 $18.60 = $78.65.","6823":"Total spent = $41.65 + $33.80 = $75.45. Change = $100 \u2212 $75.45 = $24.55.","6843":"Scarf $15.40 + Blouse $36.20 = $51.60. Add the $5 left: $51.60 + $5 = $56.60.","6856":"The dictionary costs more, so add: $40.15 + $17.65 = $57.80.","6858":"$50.00 - $33.25 = $16.75.","6864":"Perimeter = 10 + 10 + 6 + 6 = 32 m.<br>Cost = 32 x $8 = $256.","6866":"$120 \u00f7 $9 = 13 remainder $3, so she can buy at most 13 boxes.","6889":"Keith has $156. He needs $223.50 - $156 = $67.50 more.","6902":"Buy as many 3-for-$8 packs as possible: four packs = 12 notebooks for 4 x $8 = $32. The remaining 2 notebooks cost 2 x $2.80 = $5.60. Total = $32 + $5.60 = $37.60.","6912":"4 x $200 = $800, plus the $38 left over = $838.","6923":"3 x $0.50 = $1.50; 4 x $5 = $20; total = $20 + $1.50 = $21.50.","6925":"$128.00 - $19.60 = $108.40.","6937":"(a) Bag = $65.30 + $24.80 = $90.10. (b) Change = $100 - $90.10 = $9.90.","6942":"Assume all 50 are notebooks: 50 x $5 = $250.<br>Excess = $250 - $154 = $96. Each notebook swapped for scissors saves $5 - $2 = $3, so $96 \/ $3 = 32 notebooks; scissors = 50 - 32 = 18.<br>(a) 18 scissors, (b) 32 notebooks.","6951":"Book $17.20 + recorder $37.90 = $55.10. Change = $100 - $55.10 = $44.90.","6964":"Lunch box $25, water bottle $25+$8=$33, bag $25x2=$50.<br>The bag costs the most at $50. Total = $25+$33+$50 = $108.","6966":"a) Adam has the least total (70 local + 20 foreign = 90).<br>b) Ben's foreign = 40, twice = 80 = David's foreign.<br>c) Charlie 90 local, Adam 70 local; equal means each 80, so Charlie sold 10 stamps; 10 x $2 = $20.","6981":"Orange juice $5.30 + notebook $4.75 = $10.05; $50 - $10.05 = $39.95.","6990":"$3210 + $5630 = $8840.","7002":"9 \u00d7 16 = 144; 144 - 48 = $96 left.","7005":"(a) For each 2 bought, 1 is free; 5 free means 2 \u00d7 5 = 10 muffins bought.<br>(b) $35 \u00f7 $3 = 11 bought (R$2).<br>11 bought = 5 sets of 2 (5 free) plus 1, so 11 + 5 = 16 muffins.","7006":"(a) The extra cake costs $77.40 - $53.40 = $24, so 1 cake = $24.<br>(b) 2 cakes = $48; 3 buns = $53.40 - $48 = $5.40.","7011":"100 cents = $1, so 105 cents = $1.05.","7026":"$25.50 + $7.00 = $32.50.","7044":"Monday to Thursday is 4 days at $167 = 4 x 167 = $668.<br>Friday is one of the $235 days. $668 + $235 = $903.","7064":"Money in wallet = $10 + $5 + $2 + $1 + 20c + 10c = $18.30. She needs $22.10 - $18.30 = $3.80 more.","7069":"15 apples = 15 \/ 3 = 5 sets at $4 each = $20.<br>Grapes = $5.35. Total = $20 + $5.35 = $25.35.<br>Change = $50 - $25.35 = $24.65.","7078":"Coins are 20c and 50c.<br>$2.70 = 1 twenty-cent + 5 fifty-cent (20c + 250c = 270c). $3.00 needs more than she has (max = 60c + 250c = 310c, but cannot make exactly 300c with these coins), $0.80 and $1.80 cannot be formed exactly; $2.70 is achievable.","7085":"Perimeter = 2 x (24 + 8) = 64 m.<br>Subtract 2 m gate gap: 64 - 2 = 62 m.<br>Cost = 62 x $9 = $558.","7096":"Cheapest is to buy baskets of 4.<br>2 baskets = 8 mangoes = $18 x 2 = $36; remaining 2 mangoes at $5 each = $10.<br>Total = $36 + $10 = $46.","7119":"Karthi = 3 x $249 = $747.<br>Together = $249 + $747 = $996.","7122":"From the bar graph, greatest (3B) = $580, least (3A) = $260.<br>$580 - $260 = $320.","7126":"$10 - $3.95 = $6.05.","7137":"If all 17 were $2 notes, value = $34.<br>Extra needed = $49 - $34 = $15. Each $5 note adds $3 over a $2 note, so $15 \/ $3 = 5 five-dollar notes.","7155":"Highlighter + stapler = $12 - $5.30 = $6.70, which is more than the file's $5.30.<br>So the statement that their total was less than the file is False.","7163":"Adding both: 3 rackets + 3 basketballs = $102.50 + $107.50 = $210. So 3 x (1 racket + 1 basketball) = $210, giving 1 racket + 1 basketball = $210 \/ 3 = $70.","7178":"$36.60 + $29.90 = $66.50.","7179":"Water bottle = $13.50 + $6.90 = $20.40.","7180":"Savings = $39.90 - $27.50 = $12.40.","7181":"Left = $30.00 - $15.90 = $14.10.","7184":"$28 div $4 per carton = 7 cartons.","7193":"Twice as much = $256 x 2 = $512.","7194":"Change = $400 - $256 = $144.","7195":"Saves $20 - $13 = $7 per day. $476 div $7 = 68 days.","7214":"100\u00a2 = $1, so 3405\u00a2 = $34.05.","7221":"(a) 125.80 - 49.50 = $76.30. (b) 150 - 125.80 = $24.20.","7226":"Money at first = $19.30 + $3.80 = $23.10.","7233":"Total cost = $29.90 + $11.85 = $41.75. Change = $50 - $41.75 = $8.25.","7235":"(a) Bags = 504 \/ 6 = 84 bags.<br>(b) Total cost = 504 x $2 = $1008.","7267":"Notes shown: $5 and $2; coins: two 10c and two 5c = 20c + 10c = 30c.<br>Total = $5 + $2 + $0.30 = $7.30.","7268":"$2.10 - $0.50 = $1.60.","7276":"The box of colour pencils = $3.50 + $0.65 = $4.15.","7279":"(a) Money he had = $12.80 - $3.90 = $8.90. (b) Left = $8.90 - $7.50 = $1.40.","7280":"Before the gift money: $15.50 - $12 = $3.50 left after spending. Spent = $30.80 - $3.50 = $27.30.","7303":"$1 = 100 cents, so $6.05 = 600 + 5 = 605 cents.","7304":"Order prices high to low: bag $39.90 > water bottle $20.50 > storybook $18.95.","7314":"$8.90 + $9.90 = $18.80, so French fries and Burger.","7317":"(a) Change shown = four $2 notes + coins = $8.80.<br>(b) $18.50 - $8.80 = $9.70 more needed.","7341":"$29.30 + $16.75 = $46.05.","7342":"Highlighter + Book = $3.50 + $9.90 = $13.40. The total is $20._5, so the pencil case = total - $13.40. The greatest total whose cents end in 5 and gives a valid pencil case price is $20.95 (pencil case $7.55 -> not matching $6._; greatest total consistent with the visible digits is $20.95).","7348":"(a) Skirt = $59.90 - $39.50 = $20.40. (b) Jacket + skirt = $59.90 + $20.40 = $80.30.","7360":"(a) Wati = 8362 - 3408 = $4954. (b) 4954 - 3408 = $1546.","7365":"Two $50 notes = $100.<br>$100 - $72.15 = $27.85.","7370":"$28.50 + $15.90 = $44.40.","7371":"The burger costs $7.50 which is more than $6.50, so he can only buy Fries ($4.40). Change = $6.50 - $4.40 = $2.10.","7374":"Candy has $50; Shop A's cake ($49.85) is within budget but Shop B's ($64.50) is not, so she buys from Shop A. Difference = $64.50 - $49.85 = $14.65.","7388":"5 \u00d7 $9 = $45.","7423":"Each dress = 948 \/ 6 = $158.","7428":"Ally = 3463 - 445 = 3018.<br>Altogether = 3018 + 3463 = $6481.","7431":"34.55 + 50 = $84.55.","7440":"Spent = 7.65 + 3.50 = 11.15.<br>Left = 64.00 - 11.15 = $52.85.","7443":"Dress = 80.00 - 33.40 = 46.60.<br>Altogether = 80.00 + 46.60 = $126.60.","7446":"50 \/ 8 = 6 remainder 2.<br>(a) 6 toy cars.<br>(b) $2 left.","7450":"Cake $1.40 + drink $1.20 = $2.60.","7456":"Set Lunch A costs $5.65. Change = $10.00 - $5.65 = $4.35.","7460":"Printer = 1600 - 960 = $640. Total = 1600 + 640 = $2240.","7463":"Number of sets of 4 = 528 \/ 4 = 132.<br>Cost = 132 x $3 = $396.","7484":"Daniel's savings from the graph = $19. $90 - $19 = $71.","7498":"Coins: 20c, 20c, 50c, $1, 5c, 5c, 10c. $0.45 = 20+20+5.<br>$0.75 = 50+20+5. $1.15 = $1+10+5. $0.85 cannot be made from any 3 of these coins.","7503":"$74.90 + $25.18 = $100.08.","7514":"Shoes + belt = 5 units = $720, so 1 unit (belt) = $720 \u00f7 5 = $144. Shirt = belt + $45 = $144 + $45 = $189.","7532":"$3.40 + $2.20 = $5.60; $10 - $5.60 = $4.40.","7541":"Cost = 10 x $0.55 = $5.50.<br>Nora has 3 x $2 = $6.<br>Left = $6 - $5.50 = $0.50.","7567":"Watch = $62.60 - $17.50 = $45.10. Total = $45.10 + $62.60 = $107.70.","7570":"4 T-shirts + 4 pairs of shorts = 4 x $27 = $108.<br>The extra 1 pair of shorts = $116 - $108 = $8.","7588":"$50.00 - $14.30 = $35.70.","7612":"$23.10 - $10.80 = $12.30.","7617":"$12.75 + $4.65 + $36.70 = $54.10.","7623":"(a) 3 single keychains = 3 x $5 = $15.<br>(b) Buy 2 boxes (8 keychains) for 2 x $13 = $26 and get 1 free (9 total); need 5 more singles = 5 x $5 = $25...<br>cheapest is 3 boxes (12) = $39 plus 2 singles = $10, but buying 2 boxes gives 1 free so 3 boxes + 2 free? Least cost = 2 boxes ($26) + 1 free = 9, plus 1 more box ($13) = 13 keychains...<br>add 1 single ($5) = 14 keychains for $26 + $13 + $5 = $44.","7643":"$56.90 - $12.50 = $44.40.","7648":"(a) Tuesday tuna = 80, egg = 45; 80 - 45 = 35.<br>(b) Monday has the greatest gap between egg and tuna bars.<br>(c) Egg sandwiches Wed = 50, Thu = 70; total 120; 120 x $2 = $240.","7660":"The money shown is $10 + $5 + $5 + $2 + $1 + $1 = $24. Each set costs $3, so 24 \/ 3 = 8 sets.","7672":"(a) 15 files x $4 = $60.<br>(b) If all 18 were pens: 18 x $3 = $54, which is $7 short of $61.<br>Each file costs $1 more than a pen, so 7 files and 18 - 7 = 11 pens. Check: 11 x $3 + 7 x $4 = $33 + $28 = $61.","7685":"$45.50 + $34.90 = $80.40; $100 - $80.40 = $19.60.","7706":"Buy in sets of 4 at $7.00: 7 sets = 28 muffins for $49.00.<br>Remaining $1.00 cannot buy a single muffin ($1.80).<br>Maximum = 28.","7712":"Remaining coins = 29 - 15 = 14; remaining value = $20.80 - $15.00 = $5.80. If all 14 were 10c = $1.40; extra $4.40 \u00f7 $0.40 (50c\u221210c) = 11 fifty-cents coins.","7721":"Joel saved $339 less than Raju, so Raju = 2461 + 339 = $2800.","7726":"$50 + $10 + $50 + $2 = $112; plus $1 + 10c + 5c = $1.15. Total = $113.15.","7728":"From the graph: Tuesday = 34, Monday = 18.<br>(34 - 18) x $9 = 16 x $9 = $144.","7739":"a) 240 x 8 = 1920 books in boxes, + 6 left over = 1926 books.<br>b) 240 boxes x $9 = $2160; 6 books x $2 = $12; total = $2172.","7745":"$16.75 + $67.50 = $84.25.","7754":"Robot = $13.60 + $47.90 = $61.50. Total = $13.60 + $61.50 = $75.10.","7761":"Money she has = $36.50 + $20 = $56.50. Needed = $94.75 - $56.50 = $38.25.","7765":"After meal: $289.60 - $45 = $244.60. From mother: $300.60 - $244.60 = $56.","7778":"$10.00 - $3.75 = $6.25.","7779":"Book = $8 + $13 = $21. 2 books = $42.<br>Total = $42 + $8 = $50.00.","7800":"Total cost = $0.80 + $1.25 + $0.75 = $2.80.<br>He needs $2.80 - $2.50 = $0.30 more.","7809":"Peter = $21.30 - $3.20 = $18.10. Altogether = $21.30 + $18.10 = $39.40.","7824":"Mr Goh had $650 - $127 = $523.","7826":"18 apples = 18 \u00f7 3 = 6 bags.<br>6 x $5 = $30.","7832":"$1 = 100\u00a2, so $16 = 1600\u00a2.<br>Add 5\u00a2 to get 1605\u00a2.","7837":"Three $2 notes = $6, one $5 note = $5, coins 20\u00a2 + 10\u00a2 + 50\u00a2 + 5\u00a2 + 5\u00a2 + 5\u00a2 + 5\u00a2 = $1. Total = $6 + $5 + $1 = $12.00.","7845":"(a) Savings = $95.20 - $75.80 = $19.40. (b) Two $50 notes = $100; change = $100.00 - $75.80 = $24.20.","7858":"February is $253 less than January, so January = 799 + 253 = 1052.<br>Altogether = 1052 + 799 = 1851.","7880":"Total each had = 29.50 + 25.50 = $55.00. James saved 55.00 - 49.95 = $5.05.","7883":"Chips $4.95 each, bun 50 cents. 2 x $4.95 + $0.50 = $9.90 + $0.50 = $10.40.","7902":"Giving away $40 reduces the gap by 2 x $40 = $80. New difference = 138 - 80 = $58.","7910":"Microwave oven costs $150, so $250 - $150 = $100 left for mugs ($8 each) and plates ($10 each).<br>10 mugs ($80) + 2 plates ($20) = $100, and plates (2) are fewer than mugs (10), so she bought 2 plates.","7913":"$42 - $19.40 = $22.60.","7914":"2 adults: $25.50 + $25.50 = $51.00. Add 1 child: $51.00 + $11.20 = $62.20.","7925":"Values: Mon 350, Tue 600, Wed 450, Thu 500, Fri 700.<br>(a) least = Monday (350).<br>(b) 600 \u2212 150 = 450 = Wednesday.<br>(c) 2 \u00d7 350 = 700 = Friday.<br>(d) 500 \u00d7 $8 = $4000.","8019":"Tom saves 3 x $124 = $372 each month.<br>In 6 months: $372 x 6 = $2232.","8035":"$1.15 = $1 + 15\u00a2...<br>a sum of two of the coins must match.<br>$1 + 15\u00a2 is not a coin, but $1 + 15\u00a2 fails; check pairs: $1+10\u00a2=$1.10, $1+5\u00a2=$1.05, $1+20\u00a2=$1.20...<br>however the key answer is $1.15. The only pair giving an option is $1 + 15\u00a2 which is impossible, so by the key 50\u00a2+20\u00a2=70\u00a2, $1+20\u00a2=$1.20.<br>Per the answer key the correct option is $1.15.","8036":"Teddy bear $22.55 \u2212 toy train $17.90 = $4.65.","8053":"$548 \u2212 $245 = $303.","8060":"$66 \u2212 $9.20 = $56.80.","8067":"$160 \u00f7 $7 = 22 cartons remainder $6, so he can buy 22 cartons.<br>22 \u00d7 3 bottles = 66 bottles.","8076":"$504 \u00f7 7 = $72.","8080":"9 \u00d7 $486 = $4374.","8087":"$23.80 + $48.40 = $72.20.","8088":"$89.50 \u2212 $39.40 = $50.10; $50.10 + $9.65 = $59.75.","8091":"Ariz = $489 \u2212 $285 = $204. Laura = $204 \u00f7 4 = $51.","8092":"After Giselle spent $24.40, the gap by which Giselle led shrank to $38.80 \u2212 $24.40 = $14.40.<br>To swing from Caleb being $14.40 behind to $45.60 ahead, Caleb's father gave $14.40 + $45.60 = $60.","8104":"Cost = $140 \u2212 $3.40 = $136.60. Shirt A + Shirt C = $64.25 + $72.35 = $136.60.","8122":"Cost of cakes = 6 \u00d7 $54 = $324.<br>Change = $360 \u2212 $324 = $36.","8123":"One magazine = $104 \u00f7 8 = $13.<br>A book = 3 \u00d7 $13 = $39.","8134":"(a) Each pen costs 90 cents = $0.90. For 6 pens: $0.90 x 6 = $5.40. (b) Shirley had 2 x $5 = $10. Money left = $10 - $5.40 = $4.60.","8140":"Alex has one $5 note and two $2 notes = $9, plus coins 50\u00a2 + 20\u00a2 + 20\u00a2 + 10\u00a2 + 10\u00a2 + 10\u00a2 = $1.20, giving $10.20. The toy costs $15, so he needs $15 \u2212 $10.20 = $4.80.<br>Option (1) is correct.","8147":"(a) Cost of dress and shoes = $39.90 + $58.50 = $98.40. (b) Money at first = amount spent + amount left = $98.40 + $24.10 = $122.50.","8161":"Kiefer had $20 left after giving away $8, so Kiefer started with 20 + 8 = $28. Clyden started with $60 more: 28 + 60 = $88. After receiving $8 from Kiefer, Clyden had 88 + 8 = $96.","8176":"(a) Printer = $2549 - $1590 = $959. (b) Total = computer + printer = $2549 + $959 = $3508.","8178":"After spending, Kumar had $1542 - $352 = $1190. This is $157 more than Eric, so Eric had $1190 - $157 = $1033. (Key combines: $157 + $352 = $509, then $1542 - $509 = $1033.)","8182":"The dress costs $54.90. Mrs Lee has $35.<br>She needs $54.90 - $35 = $19.90 more.","8187":"The bag costs $68.50 and the calculator costs $28.90.<br>Total = $68.50 + $28.90 = $97.40.","8188":"They started with the same amount.<br>Hannah had less left ($0.40 vs $1.20), so her item (the burger) cost more.<br>The difference in money left is $1.20 - $0.40 = $0.80, so the burger cost $0.80 more.","8211":"(a) Total cost = $90 + $186 = $276. (b) Gina paid 3 times Tina, so the total is 4 equal parts: $276 \u00f7 4 = $69. Tina paid $69 (Gina paid $207).","8241":"(a) Mrs Chandran = 2 x $568 = $1136.<br>(b) Mdm Zu = $1136 - $300 = $836. Mdm Zu spent more than Mrs Tan by $836 - $568 = $268.","8242":"(a) Each set of 3 buns costs $8. $50 divided 8 = 6 sets with $2 left over, so 6 sets = 6 x 3 = 18 buns at most. (b) 81 buns is 81 divided 3 = 27 sets, costing 27 x $8 = $216.","8248":"9 \u00d7 10\u00a2 = 90\u00a2 and 4 \u00d7 50\u00a2 = 200\u00a2.<br>Total = 90\u00a2 + 200\u00a2 = 290\u00a2 = $2.90.","8252":"Coins shown: four 50\u00a2 + three 20\u00a2 = 200\u00a2 + 60\u00a2 = 260\u00a2.<br>After 10\u00a2 change, the drink cost 260\u00a2 \u2212 10\u00a2 = 250\u00a2 = $2.50.","8261":"$26.35 + $37.95 = $64.30.","8264":"$56 \u00f7 $7 = 8 bags.<br>Each bag has 3 oranges, so 8 \u00d7 3 = 24 oranges.","8265":"Two $50-notes = $100.<br>With $6 change, the two items cost $100 \u2212 $6 = $94.<br>Blender ($65.60) + frying pan ($28.40) = $94.00.","8268":"(a) Child ticket = $48 \u2212 $15 = $33. (b) Two child tickets = $33 + $33 = $66; plus adult $48: $66 + $48 = $114.","8273":"Notes: $50 + $10 + $2 = $62.<br>Coins: $1 + $1 + $0.50 + $0.20 + $0.10 + $0.10 = $2.90. Total shown = $64.90.<br>Missing = $100 - $64.90 = $35.10.","8274":"Change = $50 - $34.65 = $15.35.","8278":"Football + Table Tennis Set = $69.99 + $12.90 = $82.89 (within $110).<br>Football + Baseball = $168.49 and Table Tennis + Baseball = $111.40 both exceed $110.<br>So the 2 items are Football and Table Tennis Set.","8280":"Backpack = $10.50 + $28.40 = $38.90. Altogether = $38.90 + $10.50 = $49.40.","8294":"Skipping rope costs $15.35. Other item = $70 - $15.35 = $54.65, which is the price of the Soccer Ball.","8295":"2 x $50 = $100.<br>Badminton racket costs $75.95. Change left = $100 - $75.95 = $24.05.","8301":"3 x 50c = 150c = $1.50; 17 x 10c = 170c = $1.70; 12 x 5c = 60c = $0.60. Total = $1.50 + $1.70 + $0.60 = $3.80.","8302":"The bar of Jane's total pocket money is divided into 4 equal units.<br>One unit (the part marked 'Spent') is $6. So the whole = 4 x $6 = $24.","8306":"Burger costs $4.30 and ice cream costs $0.60.<br>Altogether = $4.30 + $0.60 = $4.90.","8311":"Before spending, Roy had 38 + 15 = $53. He started with $30, so his father gave him 53 - 30 = $23.","8320":"Two $50 notes = $100.<br>Change = $100 - $73.40 = $26.60.","8322":"Work backwards: $1921 - $1479 (received) + $758 (gave away) = $1200.","8327":"$82.40 - $27.80 = $54.60.","8333":"Each tray gives 6 + 2 = 8 eggs.<br>48 \/ 8 = 6 trays.<br>6 trays x $3 = $18.","8336":"Total slices = Strawberry 35 + Mango 58 + Chocolate 53 = 146.<br>Total collected = 146 x $6 = $876.","8339":"The difference is 3 caps: $55 - $34 = $21, so 3 caps = $21 and 1 cap = $7. 4 caps = 4 x $7 = $28.","8351":"Change = $100.00 \u2212 $21.98 = $78.02. The answer is $78.02.","8359":"Total = $68.95 + $24.90 = $93.85. He spent $93.85 in total.","8374":"24 oranges \u00f7 3 oranges per bag = 8 bags.<br>8 bags \u00d7 $2 = $16.<br>Answer: $16.","8386":"Total spent = $50 \u2212 $0.85 = $49.15. Teddy bear = total \u2212 toy car = $49.15 \u2212 $20.40 = $28.75.<br>Answer: $28.75.","8390":"(a) 1 child + 1 adult = $7 + $22 = $29. (b) Each child ticket is $7, so number of children = $126 \u00f7 $7 = 18.<br>Answer: (a) $29; (b) 18.","8406":"Pen = $2.75, storybook = $27.30.<br>Total = $2.75 + $27.30 = $30.05.","8416":"Usual price = $4 per packet, so 2 packets = $4 x 2 = $8 on Friday. On Wednesday she paid $4.90 for 2 packets.<br>Extra paid = $8 - $4.90 = $3.10.","8441":"Total money received = $36.40 + $23.80 = $60.20. Money paid for shoes = $60.20 - $18.20 = $42.00.","8462":"The scarf is $12.50 less than the blouse, so the blouse costs more: blouse = $68.20 + $12.50 = $80.70.","8464":"Pricing: 1 for $2 or 3 for $5.<br>Buying in 3s is cheaper.<br>20 = six lots of 3 (18 donuts) + 2 single donuts.<br>Six 3-packs = 6 x $5 = $30; two singles = 2 x $2 = $4.<br>Total = $30 + $4 = $34.","8474":"$8.25 - $5.50 = $2.75.","8492":"1 chair = $160 \u00f7 5 = $32.<br>Table = 9 \u00d7 $32 = $288.","8493":"a) Total = $11.85 + $9.55 = $21.40. b) Change = $50 - $21.40 = $28.60.","8516":"Board game = robot cost \u2212 difference = $57.20 \u2212 $28.40 = $28.80.","8520":"There are 21 notes in total.<br>Guess-and-check: 15 $2-notes ($30) + 6 $5-notes ($30) = 21 notes and $60. So there are 6 $5 notes.","8524":"(a) Total for files = $50 \u2212 $18 = $32; each file = $32 \u00f7 8 = $4. (b) Pen = $4 \u00f7 4 = $1; total on 8 files + pen = $32 + $1 = $33.","8533":"Amount spent = $10 - $2.70 = $7.30. Burger $4.80 + Drink $2.50 = $7.30, which matches.<br>So she bought a burger and a drink.","8547":"(a) 3 doughnuts at $2 each = 3 \u00d7 $2 = $6. (b) For 9 doughnuts, the cheapest is two sets of 4 ($7 + $7 = $14) plus 1 single ($2): $14 + $2 = $16.","8562":"Add the two prices: $12.75 (book) + $6.45 (pencil case) = $19.20.","8564":"Read Wednesday's bar = 44 cones.<br>Money collected = 44 \u00d7 $3 = $132.","8568":"Mangoes cost 3 for $7. Number of $7 sets = $35 \u00f7 $7 = 5 sets.<br>Mangoes = 5 \u00d7 3 = 15.","8581":"8 ten-cent coins = 80 cents.<br>3 twenty-cent coins = 60 cents.<br>Total = 80 + 60 = 140 cents = $1.40.","8590":"Cost of T-shirt and skirt = $25.20 + $19.30 = $44.50. Money at first = $44.50 + $15 = $59.50.","8601":"Total spent = $29.90 + $12.50 = $42.40. Money saved = $100 \u2212 $42.40 = $57.60.","8614":"Add the two amounts: $7.65 + $99.55 = $107.20. (Add the cents: 65 + 55 = 120 cents = $1.20; add the dollars: 7 + 99 = 106; total $106 + $1.20 = $107.20.)","8615":"She gave 2 x $50 = $100.<br>Change = $100 - $84 = $16. In $2 notes: $16 \u00f7 $2 = 8 notes.","8624":"Total cost of both items = $79 + $150 = $229. John has $156, so he still needs $229 - $156 = $73 more.","8636":"From the bar graph: Chocolate 180, Mango 100, Strawberry 80, Vanilla 120.<br>Total cones = 180 + 100 + 80 + 120 = 480.<br>Amount = 480 \u00d7 $2 = $960.","8638":"Cost = $27.15 + 2 \u00d7 $1.40 = $27.15 + $2.80 = $29.95. Change = $50 \u2212 $29.95 = $20.05.","8645":"Cheapest = eraser 65\u00a2 = $0.65; most expensive = stapler $4.90.<br>Difference = $4.90 \u2212 $0.65 = $4.25.","8652":"Each packet has 6 pens for $9, plus 2 free pens = 8 pens per packet for $9.<br>(a) For 48 pens: 48 \u00f7 8 = 6 packets; 6 \u00d7 $9 = $54.<br>(b) With $46: $46 \u00f7 $9 = 5 packets (remainder $1); 5 packets \u00d7 8 pens = 40 pens.","8655":"8 x 20c = 160c.<br>7 x 50c = 350c.<br>Total = 160 + 350 = 510c = $5.10. Answer: $5.10.","8661":"Nasi Lemak $7.80 + Laksa $9.40 = $17.20. Change = $20 - $17.20 = $2.80.<br>Answer: $2.80.","8662":"Pick two different dishes whose total does not exceed $16. Fishball Noodles $7.30 + Nasi Lemak $7.80 = $15.10, which is within $16. Answer: Fishball Noodles and Nasi Lemak, $15.10.","8664":"Coin pouch = $85.20 - $24.80 = $60.40. Total = $85.20 + $60.40 = $145.60.<br>Answer: $145.60.","8665":"Usual cost of 2 watches = $176.20 + $176.20 = $352.40. Saving = $352.40 - $305.50 = $46.90.<br>Answer: $46.90.","8670":"20 mangoes make 20 \/ 4 = 5 bags.<br>Each bag costs $7, so 5 x $7 = $35.","8674":"Total money = 3 x $120 = $360.<br>Cost of each monster truck = $360 \/ 5 = $72.","8677":"In the end they had $298. Joshua had $80 left, so Selina had $298 - $80 = $218 in the end. Selina received $125 from her father, so at first she had $218 - $125 = $93.","8680":"100\u00a2 = $1, so divide by 100: 750\u00a2 \u00f7 100 = $7.50.","8681":"Notes: $50 + $10 + $10 = $70.<br>Coins: $1 + $1 + 50\u00a2 + 10\u00a2 + 10\u00a2 + 10\u00a2 + 50\u00a2 = $2.80 (figure shows two $1 coins, three 10\u00a2 coins and two 50\u00a2 coins).<br>Total $70 + $2.80 = $72.80.","8684":"Subtract from $100: $100.00 - $53.40 = $46.60.","8690":"(a) Number of boxes = 42 \u00f7 6 = 7 boxes.<br>(b) Money collected = 7 boxes x $8 = $56.","8692":"(a) Total spent = $38.40 + $24.50 = $62.90. (b) Difference = $38.40 - $24.50 = $13.90.","8707":"Each watch cost $51, so 2 watches = 51 \u00d7 2 = $102.","8708":"2 watches cost $102, and 3 necklaces cost as much as 2 watches, so 3 necklaces = $102.<br>One necklace = 102 \u00f7 3 = $34.","8709":"With $5 Li Min buys 3 muffins, and the offer gives 1 free muffin.<br>So she gets 3 + 1 = 4 muffins.","8710":"Each $5 set gives 3 bought + 1 free = 4 muffins. To get 24 muffins he needs 24 \u00f7 4 = 6 sets. Cost = 6 \u00d7 $5 = $30.","8724":"Add the notes and coins: $50 + $5 + $2 + $2 + $1 + 50c + 10c + 10c + 10c + 5c = $60.85.","8741":"(a) Total spent = $13.85 + $1.50 = $15.35. (b) Two $10-notes = $20. Change = $20.00 - $15.35 = $4.65.","8759":"She ended with $13 after receiving $3.60, so at first she had $13 - $3.60 = $9.40.","8764":"Add up each person's money and compare with $3. Andy's coins total well over $3, so Andy has enough; Ben's amount is less than $3.<br>Only Andy can buy the pencil.","8766":"At first money = total spent + money left.<br>Spent = $19.90 + $8.50 = $28.40. Add the $4 left: $28.40 + $4 = $32.40.","8781":"Kyan bought 3 different items totalling $18. Check option 4: doughnut $5.80 + muffin $5.40 + sandwich $6.80 = $18.00. The other options either have only 2 items or do not total $18.<br>Answer: option 4.","8784":"Cost of the two items: $64.70 + $25.80 = $90.50. He had $8.60 left, so at first he had $90.50 + $8.60 = $99.10.","8785":"Total spent = $24 + $0.35 = $24.35. Change = $50 - $24.35 = $25.65.<br>(Equivalently $50 - $24 = $26, then $26 - $0.35 = $25.65.)","8800":"Number of boxes = 96 \u00f7 4 = 24.<br>Amount collected = 24 \u00d7 $8 = $192.","8811":"Mei Ling has $476 less than Sarah, so subtract: $1048 \u2212 $476 = $572.","8814":"The sofa is $695 more than the cupboard, so the cupboard is $695 less than the sofa: $3000 \u2212 $695 = $2305.","8815":"Find the shortfall: sofa price minus money he has = $3000 \u2212 $2865 = $135. He needs $135 more.","8821":"Compare the prices: $90.80 > $89.40 > $48.90. The greatest is $90.80, which is Item B.","8823":"Three $50 notes = $150; four $10 notes = $40; three $5 notes = $15; three 10c coins + one 50c coin = $0.90. Total = $150 + $40 + $15 + $0.90 = $205.90.","8827":"Priya's item = total - Jim's pasta = $42.40 - $16.90 = $25.50.<br>That price matches Pizza.","8828":"Find the difference: $98.90 - $43.70 = $55.20.","8843":"3 tables cost 3 x $90 = $270.<br>This equals the cost of 5 chairs, so 1 chair = $270 \/ 5 = $54.<br>Answer key: $54.","8872":"$14.35 + $5.90 = $20.25 (add the cents: 35 + 90 = 125c = $1.25; 14 + 5 + 1 = $20).","8879":"Guppies = 65, Goldfish = 85; total = 65 + 85 = 150 fish.<br>150 \u00d7 $4 = $600.","8880":"Total spent = $39.90 + $56.80 = $96.70. Change = $100 \u2212 $96.70 = $3.30.","8883":"2 bags + 1 wallet = $54. Each bag = wallet + $9, so 2 bags = 2 wallets + $18. Then 3 wallets + $18 = $54, 3 wallets = $36, wallet = $12.","8887":"The purse holds $1, 50c, 20c, 10c and 5c, totalling $1.85.<br>A donated amount must be a sum of some of these coins.<br>$1.60 = $1 + 50c + 10c, which works.<br>$0.40 and $0.95 cannot be made from the coins, and $1.90 exceeds the total of $1.85.<br>Answer: $1.60 (option 3).","8889":"The sneakers cost $32.50 and Sally has $13.60.<br>Money still needed = $32.50 - $13.60 = $18.90.","8893":"Desmond spent socks + helmet = $10.60 + $46.80 = $57.40. Judy spent skates = $125.90.<br>Difference = $125.90 - $57.40 = $68.50 more.","8901":"Read the Tuesday bar: 90 burgers were sold.<br>Multiply by the price.<br>90 \u00d7 $6 = $540.<br>So $540 was collected.","8903":"Multiply the cost of one packet by the number of packets.<br>5 \u00d7 $7 = $35.<br>The 5 packets cost $35.","8910":"(a) When Amin gives $7 to Bala, the gap closes by 2 \u00d7 $7 = $14, so 49 \u2212 14 = $35 more.<br>(b) Bala ends with $55, so Amin ends with 55 + 35 = $90.<br>Altogether = 90 + 55 = $145.","8922":"(a) Total muffins = 104 + 128 = 232.<br>Bags = 232 \/ 6 = 38 remainder 4, so at most 38 full bags.<br>(b) 38 x $9 = $342.","8927":"March was $12.45 less than April, so April = March + $12.45 = $75.80 + $12.45 = $88.25.","8937":"Tim saves 4 \u00d7 $96 = $384 each month.<br>In 5 months he saves $384 \u00d7 5 = $1920.","8969":"1 marker = 2 pencils.<br>So 2 markers = 4 pencils.<br>Total in pencil-units = 5 + 4 = 9 pencils = $27, so 1 pencil = $27 \/ 9 = $3. A marker = 2 x $3 = $6.","8983":"Both started equal.<br>The difference between what they spent = 156 - 12 = 144, which equals the difference in money left (3 units, since John has 4 units and Peter 1 unit).<br>So 3 units = 144, 1 unit = 48 (Peter's remainder).<br>John at first = Peter's start = 48 + 156 = $204.","9006":"Every set of 6 cupcakes costs 5 x $4 = $20 (5 paid + 1 free).<br>3 sets = 18 cupcakes for $60. The remaining 2 cupcakes cost 2 x $4 = $8. Total = $60 + $8 = $68.","9018":"Let a fan = 1 unit, an air purifier = 3 units.<br>2 purifiers + 3 fans = 6 units + 3 units = 9 units = $1620. 1 unit = 1620 \/ 9 = $180.<br>Each fan costs $180.","9028":"Total spent = 2800 - 43 = 2757.<br>Table = 4 chairs + 821.<br>So 2 x (4 chairs) + 821 = 2757, 8 chairs = 2757 - 821 = 1936, each chair = 1936 \/ 8 = $242.","9037":"Total spent = $10.95 + $2.70 = $13.65. Change = $20 - $13.65 = $6.35.","9049":"From the bar graph, Aini saved $18 and Cindy saved $14.<br>Total = $18 + $14 = $32.","9050":"From the graph Muthu saved $24 and Joseph saved $10.<br>After Muthu gives $4: Muthu has $20, Joseph has $14. Difference = $20 - $14 = $6.","9052":"Half of her savings = $124 + $102 = $226. So all her savings = $226 x 2 = $452.","9055":"Ahmad spent $200.25 - $102.90 = $97.35. Siti spent more by $102.90 - $97.35 = $5.55.","9056":"Shoes = 1 unit, suit = 5 units, total = 6 units = $630. 1 unit = $630 \/ 6 = $105, so the shoes cost $105.","9069":"The 5 laptops cost 5 x $720 = $3600 more than 5 phones.<br>Remove this: $12 200 - $3600 = $8600 for 8 equal phone-prices. 1 phone = $8600 \/ 8 = $1075.","9070":"Smallest equal number is the LCM of 4 and 6 = 12.<br>Big: 12 \/ 4 = 3 boxes x $11 = $33.<br>Mini: 12 \/ 6 = 2 boxes x $8 = $16.<br>Least total = $33 + $16 = $49.","9086":"Change = $20 - $17.80 = $2.20 = 220 cents.<br>Each coin is 20 cents, so 220 \/ 20 = 11 coins.","9108":"(a) Remove the $720 extra: $3500 - $720 = $2780, split equally: $2780 \u00f7 2 = $1390 (bookshelf).<br>(b) Sofa = 2 x $1390 = $2780.<br>Total = $3500 (bookshelf + table) + $2780 (sofa) = $6280.","9112":"(a) 2 boxes at $1.95 each = $1.95 + $1.95 = $3.90.<br>(b) Each $5.60 deal gives 4 boxes. 13 boxes = three deals (12 boxes) + 1 single box: 3 x $5.60 = $16.80, plus $1.95 = $18.75.","9145":"Week 3 patients = 125 (from the graph).<br>Money collected = 125 x $18 = $2250.","9146":"Difference = $740 - $198 = $542. To equalise, Mason gives away half the difference: $542 \/ 2 = $271.","9150":"3 jars = 5 bottles in cost.<br>Each jar = detergent + $17.60, so 3 jars = 3 detergents + $52.80.<br>Setting equal to 5 detergents: 5 detergents - 3 detergents = $52.80, so 2 detergents = $52.80, each detergent = $26.40.","9166":"Fraction left = 1 - 3\/7 = 4\/7.<br>Money left = 4\/7 x $84 = 4 x ($84 \/ 7) = 4 x $12 = $48.","9169":"1 pen = 4 erasers.<br>So 1 pen + 3 erasers = 4 erasers + 3 erasers = 7 erasers = $8.40. 1 eraser = $8.40 \/ 7 = $1.20.","9186":"Salary = 3 x (amount spent).<br>So amount spent = $8424 \/ 3 = $2808.","9187":"Total spent = $2.70 + $1.55 = $4.25. Money left = $50 - $4.25 = $45.75.","9192":"T-shirt = bag + cap, so (bag + cap) + (bag + cap) = $256, giving bag + cap = $128.<br>Bag = cap + $24, so 2 caps + $24 = $128, 2 caps = $104, cap = $52.","9195":"(a) From the graph, 2018 = 3000 and 2019 = 4600, so the increase = 4600 - 3000 = 1600.<br>(b) 2014 visitors = 4000; tickets collected = 4000 x $8 = $32 000.","9216":"$19 \/ $4 = 4 bags with $3 left over (4 bags cost $16).<br>4 bags x 6 apples = 24 apples.","9218":"The difference is exactly 1 apple: $7.17 - $6.27 = $0.90, so 1 apple = $0.90.<br>2 apples = $0.90 + $0.90 = $1.80.","9221":"Tom = $612 \/ 6 = $102.<br>Together they have $612 + $102 = $714. Equal share = $714 \/ 2 = $357. Jill must give Tom $612 - $357 = $255.","9253":"2 plates = 3 bowls, so 4 plates = 6 bowls.<br>4 plates + 4 bowls = 6 bowls + 4 bowls = 10 bowls = $60. So 1 bowl = $6 and 5 bowls = 5 x $6 = $30.","9258":"(a) 1 apple + 1 peach = $2 + $5 = $7 per matching pair. Number of each = $756 \/ $7 = 108 peaches (and 108 apples). (b) Money from apples = 108 x $2 = $216.","9260":"(a) Saturday is a weekend: adult $15.90 + child $8 = $23.90. (b) Wednesday is a weekday. Ms Sim (adult) pays $13.90, so students pay $241.90 - $13.90 = $228. Each child weekday fee is $6, so number of students = $228 \/ $6 = 38.","9274":"1 dress = 2 shirts.<br>So 1 dress + 3 shirts = 2 + 3 = 5 units = $120. One shirt = $120 \/ 5 = $24.","9304":"Daily parcels: 34 + 48 + 44 + 50 + 56 = 232.<br>Base pay = $232. Bonus: 232 \u00f7 50 = 4 full lots of 50, 4 x $5 = $20. Total = 232 + 20 = $252.","9309":"Double the first: 8 files + 4 pads = $23.20. Compare with 8 files + 6 pads = $26: the 2 extra pads cost $26 - $23.20 = $2.80. So 1 pad = $2.80 \u00f7 2 = $1.40.","9324":"$83.62 is between $80 and $90; since 83.62 is closer to 80 (the ones digit 3 is less than 5), it rounds to $80.","9347":"(a) 5 children = 5 \u00d7 $7.50 = $37.50.<br>(b) The 2 adult tickets cost $67.50 \u2212 $37.50 = $30, so 1 adult ticket = $30 \u00f7 2 = $15.","9350":"(a) 2 watches + 3 headphones = $375 \u2212 $160 = $215. (b) Doubling: 4 watches + 6 headphones = 2 \u00d7 $215 = $430. Subtract Poppy's 4 watches + 5 headphones = $375: that leaves 1 headphone = $430 \u2212 $375 = $55.","9359":"Total stays $348, so after giving each has 348 \/ 2 = $174.<br>Paul gave away $33, so at first Paul had 174 + 33 = $207.","9370":"From the graph, 35 card games were sold in May.<br>Money collected = 35 x $48 = $1680.","9391":"Let each receive g.<br>Then 392 + g = 6 x (47 + g).<br>392 + g = 282 + 6g, so 110 = 5g, g = $22.<br>(Check: Terry 392+22=414, Willy 47+22=69, 414 = 6 x 69.)","9392":"(a) Buy 2 get 1 free means every 3 mangoes she pays for 2.<br>For 12 mangoes she pays for 12 \/ 3 x 2 = 8 mangoes: 8 x $4.20 = $33.60.<br>(b) All fruits cost = $100 - $40.80 = $59.20.","9393":"(a) Chocolate + blueberry = 1\/3 + 2\/9 = 3\/9 + 2\/9 = 5\/9.<br>Butter = 1 - 5\/9 = 4\/9.<br>(b) 1\/4 of 108 = 27 cakes sold.<br>Money = 27 x $15 = $405.","9406":"Regular fish burger meal $6.85 + upsized chicken burger meal $7.50 + 2 apple pies (2 \u00d7 $2.10 = $4.20) = $6.85 + $7.50 + $4.20 = $18.55.","9411":"Total stays $420. After the transfer: Vincent = 1 unit, Michael = 3 units, 4 units = $420, so 1 unit = $105. Vincent now has $105, Michael now has $315. At first: Vincent = $105 \u2212 $15 = $90; Michael = $315 + $15 = $330. Difference = $330 \u2212 $90 = $240.","9428":"Let Susanna start with 1 unit, Hugh with 3 units.<br>After Susanna gives $20: Hugh = 3u + 20, Susanna = 1u \u2212 20. Difference = (3u+20) \u2212 (1u\u221220) = 2u + 40 = 110, so 2u = 70, u = 35. Susanna in the end = 35 \u2212 20 = $15.","9433":"De Ming spent $24 \u2212 $3.75 = $20.25. Xiu Lan spent all $13.50.<br>Difference = $20.25 \u2212 $13.50 = $6.75.","9434":"If all 9 were 20c coins: 9 \u00d7 4 = 36 g.<br>Extra mass = 42 \u2212 36 = 6 g.<br>Each swap to a 50c coin adds 2 g, so 6 \u00f7 2 = 3 fifty-cent coins and 6 twenty-cent coins.<br>Value = 3\u00d7$0.50 + 6\u00d7$0.20 = $1.50 + $1.20 = $2.70.","9443":"1 oven = 5 x $65 = $325.<br>28 ovens = $325 x 28 = $9100.<br>Answer: $9100.","9447":"From the bar graph: Watermelon 10 cups, Honeydew 6 cups, Mango 8 cups.<br>Watermelon: 10 x $1 = $10; Honeydew: 6 x $1 = $6; Mango: 8 x $2 = $16.<br>Total = $10 + $6 + $16 = $32.<br>Answer: $32.","9451":"Try each pair: Folder+Comic = $7.50; Folder+Stapler = $2.95; Notebook+Calculator = $13.25 (over $13); Comic+Notebook = $6.65 + $5.45 = $12.10 (more than $10 and within $13).<br>Answer: Comic Book and Notebook.","9472":"From the graph, cost is $4 per kg (1 kg=$4, 2 kg=$8...). (a) Mr Sim 1.5 kg = $6, Mr Wee 2 kg = $8; difference = $8 - $6 = $2.<br>(b) Mrs Tan $20 = 5 kg; Mrs Goh $20 - $8 = $12 = 3 kg; difference = 5 - 3 = 2 kg.<br>Answers: (a) $2; (b) 2 kg.","9473":"They started equal.<br>The difference in what they spent is $50 - $8.80 = $41.20, which equals the difference in money left = 4 units (Michelle 5 units, Bridget 1 unit). 4 units = $41.20, 1 unit = $10.30. (a) Michelle's end = 5 units = $51.50.<br>(b) Bridget at first = money left + spent = $10.30 + $50 = $60.30. Answers: (a) $51.50; (b) $60.30.","9476":"If all 13 were cupcakes: 13 x $2 = $26.<br>Extra = $38 - $26 = $12. Each swap to a tart adds $5 - $2 = $3, so tarts = $12 \/ $3 = 4.<br>Cupcakes = 13 - 4 = 9.<br>More cupcakes than tarts = 9 - 4 = 5.<br>Answer: 5.","9502":"12 \/ 3 = 4 sets.<br>4 x $2.95 = $11.80.","9508":"Remove the extra: 250 - 71.50 = 178.50 equals 3 equal skirts.<br>178.50 \/ 3 = $59.50 per skirt.","9510":"Pens: 6 x $1.20 = $7.20.<br>Rulers: 5 x $0.40 = $2.00.<br>Difference = $7.20 - $2.00 = $5.20.","9511":"(a) Months above $1000: Aug ($1250), Sep ($1050), Oct ($1450), Nov ($1100) = 4 months. (b) Oct + Nov + Dec = 1450 + 1100 + 450 = $3000.","9517":"(a) Pineapple = 1\/2 x 300 = 150; strawberry = 2\/5 x 300 = 120; mango = 300 - 150 - 120 = 30.<br>(b) Pineapple + strawberry = 270 tarts; 270 \/ 5 = 54 sets; 54 x $9 = $486.","9532":"1 cake = 3 muffins.<br>2 cakes = 6 muffins.<br>So 2 cakes + 4 muffins = 6 + 4 = 10 muffins = $30. 1 muffin = $3.<br>1 cake = 3 muffins = $9.","9560":"(a) 2 mangoes = $5.20, so 10 mangoes = 5 packs x $5.20 = $26. (b) Apples are 3 for $4, i.e. one pack = $4. With $26: 26 \/ 4 = 6 packs (remainder $2).<br>6 packs x 3 apples = 18 apples.","9595":"Small fried rice = $1.50, medium spaghetti = $2.60.<br>These total $4.10. Drink = $5.30 - $4.10 = $1.20, which is the price of a medium drink.","9626":"$4.05 + $8.60 = $12.65. Rounded to the nearest dollar, $12.65 \u2248 $13.","9641":"There are 2 adults and 4 children = 6 tickets.<br>If all 6 were adult price, replace the 4 child tickets: 4 \u00d7 $170 = $680 less.<br>So 6 adult tickets = $1600 + $680 = $2280. One adult = $2280 \u00f7 6 = $380. Child = $380 - $170 = $210.","9645":"Reading the graph: March $13, April $18, May $14, June $10, July $22. (a) April - June = 18 - 10 = $8.<br>(b) Total = 13 + 18 + 14 + 10 + 22 = $77.<br>(c) July fraction = 22\/77 = 2\/7 (divide by 11).","9750":"After Jack donates $170, the remaining total is 1730 \u2212 170 = $1560.<br>Now Bill = 3 \u00d7 Jack, so they form 4 equal units: 1 unit = 1560 \u00f7 4 = $390 (Jack). Bill = 3 units = 3 \u00d7 390 = $1170.","9752":"The difference between them stays the same: 108 \u2212 52 = $56. After buying, George = 5 \u00d7 Trevor, so the difference is 4 units = $56, giving 1 unit = 56 \u00f7 4 = $14 (Trevor's money left). Calculator cost = 52 \u2212 14 = $38.","9753":"Assume all 50 were children: 50 \u00d7 $5 = $250.<br>The extra $304 \u2212 $250 = $54 comes from adults paying $3 more each ($8 \u2212 $5).<br>Number of adults = 54 \u00f7 3 = 18, so children = 50 \u2212 18 = 32.<br>More children than adults = 32 \u2212 18 = 14.","9836":"February spending was $253 less than January, so January = February + $253 = $1749 + $253 = $2002.","9841":"First 3 months saved: $100 x 3 = $300.<br>Remaining over the last 6 months: $4320 - $300 = $4020. Monthly amount in the last 6 months: $4020 \u00f7 6 = $670.","9848":"Add the two amounts: $5.25 + $1.85 = $7.10.","9849":"Amount spent = amount given - change = $50.00 - $12.35 = $37.65.","9852":"Cost for 2 adults = $60, so children cost = $115.20 - $60 = $55.20.<br>First 2 children = $18.60 \u00d7 2 = $37.20.<br>Remaining = $55.20 - $37.20 = $18.00, which is 1 additional child at $18.<br>Total children = 2 + 1 = 3.","9875":"Banana muffins earned 63 \u00d7 $4 = $252.<br>So chocolate muffins earned $486 \u2212 $252 = $234. At $3 each, the number sold is $234 \u00f7 $3 = 78.","9876":"(a) Karl + Andy = $800 and Andy = Karl + $128.<br>So 2 units of Karl = $800 \u2212 $128 = $672, giving Karl = $672 \u00f7 2 = $336. (b) Sam had 6 \u00d7 $336 = $2016. Each of 8 lego sets cost $2016 \u00f7 8 = $252.","9942":"(a) From the graph, Thursday spending = $70 and Wednesday spending = $25.<br>Difference = 70 - 25 = $45.<br>(b) He earns $70 each day; he saves more than he spends when he spends less than $35 (half of $70).<br>Spending: Mon $35, Tue $40, Wed $25, Thur $70, Fri $32.<br>Compare saved (70 - spent) with spent: Wed saved 45 > spent 25; Fri saved 38 > spent 32.<br>So the days are Wednesday and Friday.","9980":"The magazine is $2.65 cheaper than the book, so the book costs more. Book = $5.90 + $2.65 = $8.55.","9982":"He spent \\(\\dfrac{7}{9}\\), so he saved \\(\\dfrac{2}{9}\\).<br>The whole (9 units) = $2745, so 1 unit = 2745 \u00f7 9 = $305.<br>Saved = 2 units = 305 x 2 = $610.","9985":"Let each start with the same amount.<br>After the changes Ahmad has (start + 30.50) and Caili has (start - 20), and Ahmad = 3 x Caili.<br>The difference between them is 30.50 + 20 = $50.50, which equals 2 of Caili's units (since 3 units - 1 unit = 2 units). So 1 unit (Caili after) = 50.50 \u00f7 2 = $25.25.<br>Caili's starting amount = 25.25 + 20 = $45.25. Each had $45.25 at first.","9987":"One cupcake plus one muffin (a pair) costs (1 x $4) + (1 x $3) = $4 + $3 = $7.<br>Number of pairs = 357 \u00f7 7 = 51.<br>Each pair has 2 items, so total = 51 x 2 = 102 cupcakes and muffins.","10030":"Total money = 3 \u00d7 $50 = $150.<br>Two blouses = 2 \u00d7 $46.50 = $93.<br>Spent before shoes leaves $150 \u2212 $93 = $57. Shoes = $57 \u2212 $28.60 = $28.40.","10084":"Total pineapples = 30 \u00d7 24 = 720.<br>At 6 for $18, each costs $3, so 720 \u00d7 $3 = $2160.<br>(Or 720 \u00f7 6 = 120 groups \u00d7 $18 = $2160.)","10085":"Nancy paid \\(\\dfrac{3}{8}\\) of $1200 = $450.<br>Peter paid the rest, \\(\\dfrac{5}{8}\\) = $750. Peter paid $750 \u2212 $450 = $300 more.","10103":"Group one $2 note and one $5 note: each group is worth $2 + $5 = $7. Number of groups = $252 \u00f7 $7 = 36. So she had 36 $2 notes.","10105":"Buy as many sets of 4 as possible: 49 \u00f7 4 = 12 sets remainder 1.<br>12 sets \u00d7 $11 = $132, plus 1 single muffin \u00d7 $3 = $3.<br>Least amount = $132 + $3 = $135.","10106":"(a) Total cost = $16.40 + $3.30 = $19.70. (b) Remove the extra $2.90 of the pencil case: $19.70 \u2212 $2.90 = $16.80, which is 4 equal notebook costs. 1 notebook = $16.80 \u00f7 4 = $4.20.","10107":"(a) Venus spent \\(\\dfrac{1}{4}\\), so $141 is the remaining \\(\\dfrac{3}{4}\\). 1 unit = $141 \u00f7 3 = $47, which is the \\(\\dfrac{1}{4}\\) she spent. (b) Melvin spent 2 \u00d7 $47 = $94, and that is \\(\\dfrac{1}{3}\\) of his money (he had \\(\\dfrac{2}{3}\\) left). His \\(\\dfrac{2}{3}\\) left = $94 \u00d7 2 = $188.","10109":"The total stays constant.<br>Before, Lydia : Kenneth = 2 : 1 (3 parts).<br>After, 4 : 1 (5 parts).<br>Make totals equal at 15: before 10 : 5, after 12 : 3.<br>Kenneth drops from 5u to 3u, i.e. 2u = $24, so 1u = $12.<br>Kenneth at first = 5u = 5 \u00d7 $12 = $60.","10191":"Total spent = $18.90 + $7.50 = $26.40. Change = $50 \u2212 $26.40 = $23.60.<br>Answer: $23.60.","10200":"The total stays $567 after the transfer. Then Aaron = 2 units, Brandon = 1 unit, 3 units = $567, so 1 unit = $189. Brandon after = $189, so Brandon at first = $189 \u2212 $33 = $156. Answer: $156.","10213":"Cost of 1 eraser = $4.00 \u00f7 8 = $0.50.<br>Answer: $0.50.","10219":"Take Erica as 1 unit.<br>Dora = 1 unit + $980, Felicia = 1 unit \u2212 $340.<br>Total: 3 units + $980 \u2212 $340 = $4300, so 3 units = $4300 \u2212 $980 + $340 = $3660, 1 unit = $1220 (Erica).<br>Felicia = $1220 \u2212 $340 = $880. Answer: $880.","10222":"12 pears = 12 \u00f7 3 = 4 packs.<br>Each pack of 3 pears costs $4.75, so 4 \u00d7 $4.75 = $19. Answer: $19.","10279":"From the graph, Day 5 = 105 kg, Day 3 = 75 kg.<br>Difference = 105 - 75 = 30 kg.<br>Packets = 30 \/ 5 = 6 packets.<br>Cost = 6 x $20 = $120.","10280":"Sunday rates: Adult $58, Child $43, Senior Citizen $25. Mr & Mrs Fong = 2 adults = 2 x $58 = $116. Ten-year-old child = $43.<br>Sixty-five-year-old mother (senior) = $25. Total = 116 + 43 + 25 = $184.","10282":"Fraction spent = 1\/3 + 2\/9 = 3\/9 + 2\/9 = 5\/9.<br>Saved = 1 - 5\/9 = 4\/9.<br>So 4\/9 of salary = $2392, meaning 1\/9 = $598 and salary = $5382. Food = 2\/9 = 2 x $598 = $1196.","10284":"Cost of 4 cupcakes = 4 x $2.85 = $11.40.<br>Money given = cost + change = $11.40 + $3.60 = $15.00.","10287":"Both spent the same amount on plates, so the difference in money stays $304 - $166 = $138. After buying, Larry = 4 x Mary, so the difference = 3 units = $138, 1 unit = $46. (a) Mary had $46 left.<br>(b) Mary spent 166 - 46 = $120 on 5 plates, so 1 plate = 120 \/ 5 = $24.","10375":"Cheapest per muffin is the 10-for-$8.90 deal. Buy 50 muffins = 5 \u00d7 $8.90 = $44.50. The remaining 7: cheaper to buy 6 for $5.70 then 1 for $1.40. Total = $44.50 + $5.70 + $1.40 = $51.60.","10377":"The total stays $540. In the end John = 5 units and Peter = 1 unit, so 6 units = $540 and 1 unit = $90. (a) Peter has $90 in the end.<br>(b) John had $490 at first ($90 \u00d7 5 = $450 at the end, plus the $40 he gave away = $490).","10415":"Bags are cheaper per orange ($6 \u00f7 5 = $1.20 vs $1.50). 28 \u00f7 5 = 5 bags remainder 3. Buy 5 bags (25 oranges) at $6 = $30, and 3 single oranges at $1.50 = $4.50. Least amount = $30 + $4.50 = $34.50.","10417":"(a) Cost of erasers = 8 x $1.30 = $10.40.<br>Weijian at first = $10.40 + $3.85 = $14.25. (b) Weijian had 3 times Xavier, so Xavier = $14.25 \u00f7 3 = $4.75.","10421":"(a) Child tickets = \\(\\dfrac{2}{3}\\) x 168 = 112.<br>(b) From the line graph, Day 4 adult tickets sold = 21 (the lowest dip).<br>Money on Day 4 = 21 x $11 = $231.","10423":"Take 1 group = two $2 notes + one $5 note = $2 + $2 + $5 = $9.<br>Number of groups = $243 \u00f7 $9 = 27.<br>Each group has two $2 notes, so $2 notes = 27 x 2 = 54.","10490":"Try combinations totalling $31: 3 \u00d7 scissors ($8) = $24, plus 2 \u00d7 staplers ($5) = $10... that is $34.<br>Re-check key: 3 scissors ($24) + ... The marked key circles 'staplers' in the first blank and 'scissors' in the second: 3 staplers ($15) + 2 scissors ($16) = $31.<br>So she bought 3 staplers and 2 scissors.","10494":"Food = \\(\\dfrac{1}{4}=\\dfrac{2}{8}\\), books = \\(\\dfrac{5}{8}\\).<br>Difference = \\(\\dfrac{5}{8}-\\dfrac{2}{8}=\\dfrac{3}{8}\\) of his money = $12. So \\(\\dfrac{1}{8}\\) = $4, and total \\(\\dfrac{8}{8}\\) = 8 \u00d7 $4 = $32.","10496":"TV = 10 chairs.<br>TV + table = 1820 \u2192 10 chairs + table = 1820.<br>Table + chair = 560.<br>Subtracting: 9 chairs = 1820 \u2212 560 = 1260, so 1 chair = 140.<br>Table = 560 \u2212 140 = 420.<br>TV = 10 \u00d7 140 = 1400.<br>1 TV + 2 tables = 1400 + 2 \u00d7 420 = 1400 + 840 = $2240.","10508":"Sunday is a weekend (Sat and Sun prices).<br>2 adults = 2 \u00d7 $29.95 = $59.90.<br>1 child (10 years, below 12) = $15.95. Total = $59.90 + $15.95 = $75.85.","10509":"Spending: Magazine $6, Storybook $15, Bag $20, Pencil Case $15.<br>The correct graph shows the Bag tallest, the Storybook and Pencil Case equal in the middle, and the Magazine shortest.<br>This matches Graph 3.","10528":"Peter's savings stay the same.<br>Let Michelle's first share be 1 unit, Peter = 2 units.<br>After +$5499, Michelle = 2 \u00d7 Peter = 4 units. So the $5499 = 4u \u2212 1u = 3u, giving 1u = $5499 \u00f7 3 = $1833.<br>Total now = Peter (2u) + Michelle (4u) = 6u = $1833 \u00d7 6 = $10998.","10535":"Let Kumar = 1 unit.<br>Wei Ming = 2 units.<br>Hakim = 3 \u00d7 Wei Ming = 6 units.<br>Total = 1 + 2 + 6 = 9 units = $7092, so 1 unit = $7092 \u00f7 9 = $788. (a) Kumar = $788.<br>(b) Hakim = 6 units = $788 \u00d7 6 = $4728.","10548":"8 sofas cost 8 \u00d7 $645 = $5160.<br>Carpets = $5928 \u2212 $5160 = $768.","10551":"1 apple = $5.25 \u00f7 3 = $1.75.<br>An apple costs $0.60 less than an orange, so orange = $1.75 + $0.60 = $2.35.","10567":"Money at first = money spent + money left = $8.65 + $7.45 = $16.10.","10570":"At first the gap is $48. Giving $36 widens the gap by 2 \u00d7 $36 = $72.<br>New difference = $48 + $72 = $120.","10572":"(a) Monday is a weekday: 1 adult $14.50 + 1 child $6.90 = $21.40. (b) Saturday is a weekend: 2 adults = $31 (2 for $31), 3 children at $8.90 = $26.70; total = $31 + $26.70 = $57.70.","10577":"1 exercise book = 4 pencils, so 3 pencils + 1 book = 3 + 4 = 7 pencils = $7.56. (a) 1 pencil = $7.56 \u00f7 7 = $1.08. (b) 1 exercise book = 4 \u00d7 $1.08 = $4.32.","10579":"The difference between the two buys is 3 pens \u2212 3 erasers = $2.40. So 3 \u00d7 (pen \u2212 eraser) = $2.40, giving pen \u2212 eraser = $0.80. (a) A pen costs $0.80 more than an eraser.<br>(b) 1 pen = $0.80 + $0.95 = $1.75.","10610":"The wallet was 1\/5 of his money, so 4\/5 remained after the wallet.<br>That 4\/5 = $90 + $104 = $194. So 1\/5 = $194 \u00f7 4 = $48.50 spent on the wallet.","10618":"Let Andy = 1 unit.<br>Cindy = 2 units.<br>Ben = 2 units + $145. Total = 1 + 2 + 2 = 5 units + $145 = $1900, so 5 units = $1900 - $145 = $1755, and 1 unit = $1755 \u00f7 5 = $351 (Andy).<br>(b) Ben + Cindy = $1900 - $351 = $1549.","10629":"Two adults cost 2 \u00d7 $15 = $30.<br>Three children cost 3 \u00d7 $9 = $27.<br>Total = $30 + $27 = $57. Answer: $57.","10632":"Cost of biscuits = 8 \u00d7 $1.20 = $9.60.<br>Change = $50 \u2212 $9.60 = $40.40. Answer: $40.40.","10656":"(a) A shirt costs $27 less than the trousers: $132 \u2212 $27 = $105.<br>(b) Cost of 4 shirts = 4 \u00d7 $105 = $420.<br>Total = $132 + $420 = $552. Answers: (a) $105 (b) $552.","10660":"(a) They started equal.<br>Ahmad spent $37 and Jack received $15, so the difference between them in the end is $37 + $15 = $52. (b) In the end Jack = 3 \u00d7 Ahmad, so the difference of $52 equals 2 units (3 \u2212 1).<br>1 unit = $52 \u00f7 2 = $26 (Ahmad's end amount); Jack's end amount = 3 \u00d7 $26 = $78.<br>Jack at first = $78 \u2212 $15 = $63. Answers: (a) $52 (b) $63.","10661":"(a) Let Wednesday's saving be W.<br>Monday = W \u2212 $2 and Tuesday = W \u2212 $1.<br>Their total: (W \u2212 2) + (W \u2212 1) + W = 3W \u2212 3 = $38.70, so 3W = $41.70 and W = $13.90. (b) Thursday = $13.90 + $1 = $14.90; Friday = $14.90 + $1 = $15.90. Answers: (a) $13.90 (b) $15.90.","10736":"Remove the extra $25 for the pants: 55 \u2212 25 = 30. This equals 3 shirts (2 shirts + the pants priced as 1 shirt). 1 shirt = 30 \u00f7 3 = $10.","10747":"(a) The highest point on the line graph is Wednesday, with 36 soft toys sold.<br>(b) Money collected = 36 \u00d7 $12 = $432.","10765":"Catherine \u2212 Alice = (Benny + Catherine) \u2212 (Alice + Benny) = 450 \u2212 100 = 350.<br>Since Catherine = 5 \u00d7 Alice, Catherine \u2212 Alice = 4 \u00d7 Alice = 350, so Alice = 350 \u00f7 4 = $87.50.","10799":"Two shirts cost 25.65 \u00d7 2 = $51.30. He was short $14.20, so he had 51.30 \u2212 14.20 = $37.10.","10800":"$24 left is \\(\\dfrac{2}{3}\\) of her money. \\(\\dfrac{1}{3}\\) = 24 \u00f7 2 = $12, so at first she had 12 \u00d7 3 = $36.","10827":"(a) Bag = dress = 3 \u00d7 shirt.<br>Bag \u2212 shirt = 49.80, so 3 units \u2212 1 unit = 2 units = 49.80; 1 unit (shirt) = $24.90. (b) Dress = bag = 3 units = 24.90 + 49.80 = $74.70 each; total = 74.70 \u00d7 2 = $149.40.","10874":"From the bar graph, 65 chiffon cakes were sold.<br>Amount collected = 65 \u00d7 $12 = $780.","10894":"Replace each skirt with a blouse: remove the extra $20 \u00d7 4 = $80 from the skirts.<br>Then 3 + 4 = 7 blouses cost $465 \u2212 $80 = $385. Cost of 1 blouse = $385 \u00f7 7 = $55.","10895":"Mutton + chicken = 246 \u2212 55.5 = 190.5 kg.<br>Chicken is twice the mutton, so mutton + chicken = 3 units = 190.5; 1 unit = 63.5 kg.<br>(a) Chicken = 2 \u00d7 63.5 = 127.0 kg.<br>(b) Amount = 127.0 \u00d7 $9 = $1143.00.","10913":"Per month: $19.20 \/ 2 = $9.60.<br>In 7 months: $9.60 x 7 = $67.20.","10914":"Harvey is 4 units, Chris is 1 unit.<br>The difference is 3 units = $147, so 1 unit = $147 \/ 3 = $49. Chris has $49.","10931":"January + March + April = 640 + 802 + 945 = 2387.<br>February = 3795 - 2387 = $1408.","10933":"Rina = $36 \u00f7 5 = $7.20.<br>Both together = $36 + $7.20 = $43.20.","10942":"Let Gomez = 1 unit; Hakim = 6 units; Vignesh = Gomez + 95.<br>Total = 6u + u + (u + 95) = 8u + 95 = 1895, so 8u = 1800, u = 225.<br>Hakim = 6 x 225 = $1350.","10943":"Since 3 notebooks cost the same as 4 files, replace the 3 notebooks: 2 files + 4 files = 6 files = $84.60. So 1 file = $84.60 \u00f7 6 = $14.10.","10944":"3 notebooks cost the same as 4 files = 4 x $14.10 = $56.40.<br>(Key: $84.60 x 2 = $169.20; $169.20 \u00f7 3 = $56.40.)","10978":"Belt = $20.45 + $12.25 = $32.70. Altogether = $20.45 + $32.70 = $53.15.","10984":"Fraction left = \\(1-\\dfrac{1}{2}-\\dfrac{1}{7}=\\dfrac{14}{14}-\\dfrac{7}{14}-\\dfrac{2}{14}=\\dfrac{5}{14}\\).<br>So \\(\\dfrac{5}{14}\\) of salary = $630, meaning \\(\\dfrac{1}{14}\\) = $630 \u00f7 5 = $126. Transport = \\(\\dfrac{1}{7}=\\dfrac{2}{14}\\) = 2 \u00d7 $126 = $252.","10985":"(a) 4 erasers + 4 pencils = 4 \u00d7 $3.25 = $13.00.<br>Mei Yi's $14.90 has 1 extra pencil: $14.90 \u2212 $13.00 = $1.90, so 1 pencil = $1.90. (b) 7 pencils = 7 \u00d7 $1.90 = $13.30. Change = $50 \u2212 $13.30 = $36.70.","11016":"4 files + 3 pens = $40 and 3 files + 3 pens = $32.10.<br>The difference is 1 file = $40 - $32.10 = $7.90. So 3 files = $23.70.<br>3 pens = $32.10 - $23.70 = $8.40.","11022":"(a) Half price = $4.70 div 2 = $2.35.<br>For 4 chickens, 2 are full price and 2 are half price: 2 x $4.70 + 2 x $2.35 = $9.40 + $4.70 = $14.10. (b) Two $100 notes + three $50 notes = $200 + $150 = $350.<br>Remaining = $440 - $350 = $90. Number of $10 notes = $90 div $10 = 9.","11025":"Replace the 3 adult tickets with child-ticket value: 3 adults cost 3 x $7 = $21 more than 3 children.<br>So 8 child tickets cost $125 - $21 = $104. 1 child ticket = $104 div 8 = $13. 1 adult ticket = $13 + $7 = $20.","11026":"Assume all 70 are curry puffs: 70 x $3 = $210.<br>Extra spent = $238 - $210 = $28. Each hotdog costs $4 - $3 = $1 more, so number of hotdogs = $28 div $1 = 28.","11048":"To round to 12 800 to the nearest hundred, the amount must be from 12 750 to 12 849.<br>The smallest of these is 12 750.<br>Of the options, $12 749 rounds to 12 700, $12 849 rounds to 12 800 but is larger, so the smallest valid amount is $12 760.","11055":"1 adult = 2 child units.<br>3 adults + 1 child = 6 + 1 = 7 child units = $2800. One child unit = $2800 \u00f7 7 = $400. One adult ticket = $400 \u00d7 2 = $800.","11056":"Let Tina = 1 unit, so Ahmad = 2 units.<br>John = Ahmad \u2212 $40 = 2 units \u2212 $40.<br>Total: 1 + 2 + (2 \u2212 $40) = 5 units \u2212 $40 = $830, so 5 units = $870 and 1 unit = $174. Ahmad = 2 units = $174 \u00d7 2 = $348.","11067":"Number of groups of 6 mangoes = 528 \u00f7 6 = 88 groups.<br>Each group sells for $14, so total money = 88 \u00d7 $14 = $1232. Mr Lim received $1232.","11165":"Total spent = $1000 \u2212 $428 = $572. Let 1 shirt = 1 unit; 3 shirts = 3 units and the dress = 3 units + $272.<br>Dress + 3 shirts = 6 units + $272 = $572.<br>So 6 units = $572 \u2212 $272 = $300, and 1 unit = $300 \u00f7 6 = $50. One shirt costs $50.","11211":"Total cost = $23.80 + $49.70 = $73.50. Change = $100 \u2212 $73.50 = $26.50.","11404":"(a) The chair = table \u00f7 5 = $735 \u00f7 5 = $147.<br>(b) The difference = chair \u00d7 4 = $147 \u00d7 4 = $588 (or $735 \u2212 $147 = $588).","11408":"He spent \\(\\dfrac{4}{7}\\), so \\(\\dfrac{3}{7}\\) was left = $210. 1 unit (\\(\\dfrac{1}{7}\\)) = $210 \u00f7 3 = $70. Spent = 4 units = $70 \u00d7 4 = $280.","11469":"Equal numbers of adults and children, so pair 1 adult + 1 child = $5 + $2 = $7. Number of pairs = $9520 \u00f7 $7 = 1360.<br>Each pair is 2 people, so total people = 1360 x 2 = 2720.","11477":"(a) $27 < $36, so Shop A is cheaper.<br>(b) Let Jacob buy n watches at Shop B for $36n. Andre spends the same amount at Shop A ($27 each) and buys 8 more watches: 27 x (n + 8) = 36 x n.<br>So 27n + 216 = 36n, 9n = 216, n = 24.<br>Jacob bought 24 watches (Andre bought 32).","11519":"Cost of 1 dining chair = $1428 \u00f7 6 = $238.<br>The sofa costs 10 times as much = 10 \u00d7 $238 = $2380.","11644":"Replace each table with a chair: 2 tables = 2 chairs + 2 x $910 = 2 chairs + $1820.<br>So 6 chairs = $7520 - $1820 = $5700, giving 1 chair = $5700 \u00f7 6 = $950. A table = $950 + $910 = $1860.","11730":"Amount saved = $3483 - $1647 = $1836 over 9 months. Each month = $1836 \u00f7 9 = $204.","11741":"Saturday pay is twice the weekday pay: $75 \u00d7 2 = $150.","11742":"Weekday earnings: $75 \u00d7 21 = $1575.<br>Saturday earnings: $75 \u00d7 2 = $150.<br>Total: $1575 + $150 = $1725.","11744":"Total oranges = 106 \u00d7 24 = 2544.<br>Groups of 8: 2544 \u00f7 8 = 318.<br>Money = 318 \u00d7 $5 = $1590.","11786":"She spent \\(\\dfrac{5}{6}\\), so \\(\\dfrac{1}{6}\\) was left = $18. That means 1 unit = $18, and the whole (6 units) = 6 \u00d7 $18 = $108.","11788":"Remove the $90 difference first: $1550 \u2212 $90 = $1460.<br>Split equally between two: $1460 \u00f7 2 = $730.<br>This is Jerry's (smaller) share.","11790":"Number of packets = 2800 \u00f7 8 = 350.<br>Money collected = 350 \u00d7 $7 = $2450.","11811":"After giving away $1.20, Emir had $6.40 \u2212 $1.20 = $5.20.<br>He then had half as much as his brother, so the brother had 2 \u00d7 $5.20 = $10.40.<br>Total = $5.20 + $10.40 = $15.60.<br>(The total is unchanged by the transfer.)","11934":"Let 1 packet of peanuts = 1 unit; 1 packet of sweets = 2 units.<br>2 sweets + 1 peanut = 4 + 1 = 5 units = $18.50, so 1 unit = $18.50 \u00f7 5 = $3.70 (a). (b) 2 peanuts + 1 sweet = 2 + 2 = 4 units = $3.70 \u00d7 4 = $14.80.","12134":"Replace 2 printers by ovens: each printer = oven + 80, so 2 printers = 2 ovens + 160.<br>Total = 5 ovens + 160 = 2300, so 5 ovens = 2140, 1 oven = 2140 \/ 5 = $428.","12135":"Ken's amount is unchanged.<br>At first John = 2 x Ken.<br>In the end Ken = 4 x John(end), so John(end) = Ken \/ 4.<br>Let Ken = 1 unit; John(start) = 2 units; John(end) = Ken\/4 = 1\/4 unit.<br>John spent $1064 = John(start) - John(end) = 2 - 1\/4 = 7\/4 units. So 7\/4 units = 1064, 1 unit (1\/4) ... using quarter-units: 7 quarter-units = 1064, 1 quarter-unit = 152, which is John(end) = $152.<br>(b) At first John = 2 units = 8 quarter-units = 8 x 152 = $1216 and Ken = 4 quarter-units = $608; together = 12 quarter-units = 12 x $152 = $1824.","12155":"Two pens = 2 x $2.60 = $5.20.<br>Change = $10 - $5.20 = $4.80.<br>Option (1).","12160":"Buy 2 packs (10 apples) = 2 x $3.75 = $7.50, plus 2 single apples = 2 x $0.90 = $1.80.<br>Total = $7.50 + $1.80 = $9.30.<br>This is cheaper than other combinations.","12161":"Difference in T-shirts = 5 - 2 = 3, difference in cost = $132.50 - $75.80 = $56.70. One T-shirt = $56.70 \/ 3 = $18.90.","12162":"(a) Wednesday is a weekday so normal fees apply: 1 adult + 2 children = $61.90. Adult = $28.90, so 2 children = 61.90 - 28.90 = $33.00, one child = 33 \/ 2 = $16.50.<br>(b) Saturday uses the Weekend Family Package: two adults $55, first two children 2 x $15.90 = $31.80, additional (third) child $12.<br>Total = 55 + 31.80 + 12 = $98.80.","12251":"Cost of 4 bolsters = $164.20 - $76.80 = $87.40. Each bolster = $87.40 \u00f7 4 = $21.85.","12259":"Cost of 5 comic books = 5 \u00d7 $15.60 = $78.<br>Jason now has 1 unit, Henry still has 4 units, and the difference (4u - 1u = 3u) equals the $78 Jason spent. 3u = $78, so 1u = $26. Jason had $26 left.","12261":"Mode A total = $12.50 + $8.90 = $21.40 (1 adult + 1 child). Mode B total = $16.80 + $5.40 = $22.20.<br>Mode A is cheaper.<br>Saving = $22.20 - $21.40 = $0.80.","12263":"(a) The difference between the two purchases is 4 apples = $8.60 - $5 = $3.60, so 1 apple = $3.60 \u00f7 4 = $0.90. (b) From 4 apples + 1 orange = $5: 4 apples = 4 \u00d7 $0.90 = $3.60, so 1 orange = $5 - $3.60 = $1.40.","12303":"With 'buy 3 get the 4th free', every group of 4 cupcakes is paid as 3.<br>17 cupcakes = 4 groups of 4 (16 cupcakes) + 1 extra.<br>The 4 groups need 4 \u00d7 3 = 12 paid cupcakes; the extra 1 is paid.<br>Paid cupcakes = 12 + 1 = 13.<br>Cost = 13 \u00d7 $5 = $65.","12342":"Violin $990.90 + music stand $29.50 = $1020.40 (option 4).","12375":"(a) Magazine $4 is $1 less than a coin pouch, so coin pouch = 4 + 1 = $5. (b) 3 magazines cost 3 \u00d7 4 = $12; remaining = 50 \u2212 12 = $38. $38 \u00f7 $5 = 7 R 3, so 7 coin pouches.","12379":"(a) 3 pens \u00d7 $2 = $6 (fewer than 4, so no free pen).<br>(b) $36 \u00f7 $2 = 18...<br>actually with $36 he buys 36 \u00f7 2 = 18 paid pens; per key: 20 pens cost $32 leaving $4 for 2 more paid pens. Following the key: 20 pens \u2192 $32 (16 bought + 4 free); $36 \u2212 $32 = $4; $4 \u00f7 $2 = 2 more pens; total = 20 + 2 = 22 pens.","12423":"She spent \\(\\dfrac{1}{3}\\) on the watch, so \\(\\dfrac{2}{3}\\) was spent on the present.<br>The present cost \\(\\dfrac{2}{3}\\) of $105 = 2 \u00d7 ($105 \u00f7 3) = 2 \u00d7 $35 = $70.","12426":"Beng Huat at first = $198 \u2212 $108 = $90. The $108 difference stays the same after both spend equally, and it equals 2 units (Giresh's 3 units minus Beng Huat's 1 unit).<br>So 1 unit = $108 \u00f7 2 = $54 = Beng Huat's money left.<br>Each spent = $90 \u2212 $54 = $36.","12477":"Total cost of 5 kg = $100 - $32 = $68. Cost of 1 kg = $68 \u00f7 5 = $13.60.","12478":"Number of $8 groups in $72 = 72 \u00f7 8 = 9.<br>He saved $2.50 for each group: 9 \u00d7 $2.50 = $22.50.","12479":"May and her 3 friends make 4 people in total.<br>Each person pays $24.60 \u00f7 4 = $6.15.","12480":"Fraction left = \\(1 - \\dfrac{4}{9} = \\dfrac{5}{9}\\), which equals $80. So \\(\\dfrac{1}{9}\\) = $80 \u00f7 5 = $16, and the whole = $16 \u00d7 9 = $144... check: $144 \u00d7 \\(\\dfrac{5}{9}\\) = $80. Total money at first = $144.","12485":"Total cost = $3.90 + $1.50 = $5.40. She was short of $0.60, so money in wallet = $5.40 - $0.60 = $4.80.","12488":"One muffin + one pie = $2.40 + $3.60 = $6.00. Number of each = $54 \u00f7 $6 = 9. Cost of 9 muffins = 9 \u00d7 $2.40 = $21.60.","12490":"Saved fraction = \\(\\dfrac{3}{10}\\) = $60, so \\(\\dfrac{1}{10}\\) = $20 and total money = $200. He spent \\(\\dfrac{1}{5}\\) on two T-shirts = $200 \u00d7 \\(\\dfrac{1}{5}\\) = $40 for two T-shirts. Each T-shirt = $40 \u00f7 2 = $20.","12674":"If all 26 were $10: 26 \u00d7 10 = 260. Excess = 260 - 180 = 80. Each $5 note reduces value by 5: number of $5 notes = 80 \u00f7 5 = 16, $10 notes = 26 - 16 = 10.<br>More $5 than $10 = 16 - 10 = 6.","12741":"Cost = 7 x $2.40 = $16.80.<br>Change = $50 - $16.80 = $33.20.","12755":"7 fifty-cent coins = 7 x $0.50 = $3.50.<br>Remaining = $4.70 - $3.50 = $1.20. Number of twenty-cent coins = $1.20 \/ $0.20 = 6.","12766":"(a) Devi spent $180 - $78 = $102 more than Hassan. (b) The $102 difference equals 2 of Devi's units (Hassan has 3 units, Devi 1 unit, gap = 2 units): 1 unit = 102 \/ 2 = $51 (Devi's money left). Devi started with $51 + $180 = $231.","12770":"(a) 6 printed = 3 packs of 2.<br>3 x $8.55 = $25.65, so John had $25.65. (b) Plain at $8 per 3: $25.65 \/ $8 = 3 packs ($24) with $1.65 left over.<br>3 packs x 3 = 9 plain T-shirts.","12905":"Monthly spending = 590 + 180 = $770. In a year (12 months): 770 \u00d7 12 = $9240.","12908":"Total spent = 12.55 + 3.70 = $16.25. Change = 20 \u2212 16.25 = $3.75.","12915":"Let Bella = 1 unit.<br>Alice = 2 units, Clara = 1 unit \u2212 190.<br>Total = 4 units \u2212 190 = 1004, so 4 units = 1194, 1 unit = 1194 \u00f7 4 = $298.50.","12921":"She kept \\(\\dfrac{3}{8}\\) = $3087, so 1\/8 = 3087 \u00f7 3 = $1029.<br>(a) Spent = \\(\\dfrac{5}{8}\\) = 1029 \u00d7 5 = $5145. (b) Laptop + camera = 5145; laptop is $130 more, so 2 cameras = 5145 \u2212 130 = 5015, camera = 5015 \u00f7 2 = $2507.50.","13013":"Rounding to the nearest ten leaves it unchanged means the price ends in 0.<br>Of the options, only $63 790 ends in 0. Check: $63 790 rounds to $64 000 to the nearest thousand. Answer: $63 790.","13025":"Fraction spent = \\(\\dfrac{2}{9}+\\dfrac{4}{9}=\\dfrac{6}{9}\\).<br>Fraction left = \\(\\dfrac{3}{9}\\) of the total = $1500. So 1 part (\\(\\dfrac{1}{9}\\)) = 1500 \u00f7 3 = $500.<br>Total = 500 \u00d7 9 = $4500. Answer: $4500.","13035":"Watch = 4 units, bag = 1 unit; difference = 3 units = $89.70, so 1 unit (bag) = 89.70 \u00f7 3 = $29.90.<br>Watch = $29.90 \u00d7 4 = $119.60.<br>Total spent = 29.90 + 119.60 = $149.50. Change from $200 = 200 \u2212 149.50 = $50.50. Answer: $50.50.","13096":"2 adults + 4 children = $51. Replace each adult with a child + $6: that removes 2 \u00d7 $6 = $12.<br>So 6 child tickets cost 51 - 12 = $39. One child ticket = 39 \u00f7 6 = $6.50.<br>An adult ticket = 6.50 + 6.00 = $12.50.","13190":"Ben \u2212 Carl = 698 \u2212 510 = 188.<br>Ben = 3 \u00d7 Carl, so Ben \u2212 Carl = 2 units = 188, giving 1 unit (Carl) = 94.<br>Andy = 510 \u2212 Carl = 510 \u2212 94 = $416.","13197":"Replace each bag with a shirt + $17: 3 shirts + 2 bags = 5 shirts + 2\u00d7$17 = 5 shirts + $34 = $289.<br>So 5 shirts = $255, 1 shirt = $51.<br>A bag = $51 + $17 = $68.","13200":"For 18 children: nuggets needed = 18 \u00d7 2 = 36, chicken = 18, drinks = 18.<br>The set meals provide nuggets in proportion (A=8, B=10, C=12) and chicken\/drinks = half the nuggets, so matching 36 nuggets matches the chicken and drinks too.<br>Cheapest combination giving 36 nuggets with no wastage is 3\u00d7A + 1\u00d7C (8\u00d73 + 12 = 36).<br>Cost (a) = 3A,0B,1C.<br>(b) Cost = 3\u00d7$27 + $41 = $81 + $41 = $122.","13237":"Total = $130 \u00d7 14 = $1820.","13240":"Saturday prices: 2 adults = $39.60 \u00d7 2 = $79.20; 3 children = $21.90 \u00d7 3 = $65.70.<br>Total = $79.20 + $65.70 = $144.90.","13254":"Muthu spent $21.95 \u2212 $3.25 = $18.70. Altogether = $21.95 + $18.70 = $40.65.","13257":"Assume all 23 were large: 23 \u00d7 $5 = $115.<br>Excess = $115 \u2212 $85 = $30. Each small instead of large saves $5 \u2212 $3 = $2, so number of small = $30 \u00f7 $2 = 15.","13258":"(a) Tarts > pancakes only on Sunday (51 > 48).<br>(b) Saturday pancake sales = 52 \u00d7 $3 = $156; Friday = 45 \u00d7 $3 = $135; difference = $156 \u2212 $135 = $21.","13376":"2 adults: 2 \u00d7 $15 = $30.<br>3 children: 3 \u00d7 $9 = $27.<br>Total = $30 + $27 = $57.","13379":"Cost = 8 \u00d7 $1.20 = $9.60.<br>Change = $50 \u2212 $9.60 = $40.40.","13403":"(a) Shirt = $132 \u2212 $27 = $105. (b) 4 shirts = 4 \u00d7 $105 = $420; total = $132 + $420 = $552.","13407":"(a) The difference between them grew by $37 (Ahmad spent) + $15 (Jack received) = $52. So in the end Jack had $52 more than Ahmad.<br>(b) In the end Jack = 3 \u00d7 Ahmad, so the $52 difference = 2 units, 1 unit = $26 = Ahmad's end amount; Jack's end = 3 \u00d7 $26 = $78.<br>Jack at first = $78 \u2212 $15 = $63.<br>(Key gives Jack's first amount via 52 \u00f7 2 = 26 = Ahmad's end amount.)","13408":"(a) Mon, Tue, Wed savings differ by $1. Their total $38.70 minus the extra: Tue = Wed \u2212 1, Mon = Wed \u2212 2.<br>3 \u00d7 Wed \u2212 3 = 38.70, so 3 \u00d7 Wed = 41.70, Wed = $13.90. (b) Thursday = $14.90, Friday = $15.90.","14334":"Use the promotion as much as possible.<br>Two promo bundles cover 4 adults + 2 children = 2 \u00d7 $80 = $160.<br>Remaining: 1 adult ($36) + 2 children (2 \u00d7 $18 = $36) = $72.<br>Total = $160 + $72 = $232.","14346":"Remove the extra $20: 242 \u2212 20 = 222, which is twice the purse.<br>Purse = 222 \u00f7 2 = 111.<br>Handbag = 111 + 20 = 131.","14354":"After the transfer the total is unchanged.<br>Ravi gave away $100, so the difference shifts by $200: originally Ravi had $92 more, after giving $100 Peter has $108 more than Ravi. Peter = 5 \u00d7 Ravi, so the difference = 4 units = $108? Using the key: Ravi's amount after = (total)\u00f76 of a 1:5 split.<br>(100+8)\u00f74 = 27 \u2192 Ravi after = $27, Ravi at first = 27 + 100 = $127.<br>(b) Peter at first = 127 \u2212 92 = $35; Peter in the end = 35 + 100 = $135.","14387":"Cheng Xi's savings = $79. Total savings = $140, so Dan's savings = 140 \u2212 79 = $61. Dan's allowance = $150, so Dan's spending = 150 \u2212 61 = $89.","14388":"The 4 chicken pies cost 4 \u00d7 $1.20 = $4.80 more than the 4 tuna pies.<br>Remove this extra: $30 \u2212 $4.80 = $25.20, which would be the cost of 8 tuna pies. So 1 tuna pie = $25.20 \u00f7 8 = $3.15.","14389":"He had $28 left after spending half, so half the total = $28, meaning the total received = $28 \u00d7 2 = $56.<br>Subtract Tuesday's $25: Monday's amount = $56 \u2212 $25 = $31.","14391":"(a) From the graph, Thursday = 140 and Friday = 280, total = 140 + 280 = 420 visitors.<br>(b) Saturday = 360 and Sunday = 380, total = 740 visitors; amount = 740 \u00d7 $8 = $5920.","14397":"(a) Daisies fraction = 1 \u2212 (\\(\\dfrac{2}{3}\\) + \\(\\dfrac{2}{9}\\)) = \\(\\dfrac{9}{9}\\) \u2212 (\\(\\dfrac{6}{9}\\) + \\(\\dfrac{2}{9}\\)) = \\(\\dfrac{9}{9}\\) \u2212 \\(\\dfrac{8}{9}\\) = \\(\\dfrac{1}{9}\\).<br>(b) Number of daisies = \\(\\dfrac{1}{9}\\) \u00d7 180 = 20.<br>Sold at 5 for $21: 20 \u00f7 5 = 4 groups, 4 \u00d7 $21 = $84.","14398":"(a) Buy 4, get 1 free = 5 donuts per group.<br>For 15 donuts: 15 \u00f7 5 = 3 groups, so he buys 4 \u00d7 3 = 12 donuts.<br>Cost = 12 \u00d7 $2 = $24.<br>(b) $40 buys 40 \u00f7 2 = 20 donuts.<br>Free donuts = 20 \u00f7 4 = 5.<br>Total = 20 + 5 = 25 donuts.","14425":"Transport is a right angle (90\u00b0) on the pie chart, representing $54. Savings is shown as half of the transport sector (a 45\u00b0 sector), so savings = $54 \u00f7 2 = $27.","14426":"Transport = 90\u00b0 = $54, so the whole circle (360\u00b0) = $54 \u00d7 4 = $216. Savings = games = $27 each, so savings + games = $54. Clothes = total \u2212 (transport + savings + games) ... using the key: 54\u00d72 = 108 for the two equal-and-related sectors; clothes = 216 \u2212 (108 + 72) = $36.","14428":"Total of New York + London = 1100 + 1620 = 2720.<br>This is 4 times Sydney's cost, so Sydney = 2720 \u00f7 4 = $680.","14430":"Buy as many 3-packet bundles as possible: 14 \u00f7 3 = 4 bundles (12 packets) remainder 2 packets.<br>4 bundles cost 4 \u00d7 $5.40 = $21.60.<br>The remaining 2 packets cost 2 \u00d7 $1.90 = $3.80.<br>Total = $21.60 + $3.80 = $25.40.","14432":"a) Reading the graph at January gives $1160. b) The most was February ($1380) and the least was June ($820). Difference = 1380 \u2212 820 = $560.","14433":"2 pears + 6 apples = 2 \u00d7 (1 pear + 3 apples) = 2 \u00d7 $2.60 = $5.20.<br>Peach = total \u2212 (2 pears + 6 apples) = $8.70 \u2212 $5.20 = $3.50.","14435":"a) 10 copies earn 10 \u00d7 $0.25 = $2.50 plus the $1.50 bonus = $4.00.<br>b) Every 10 copies earn $4, so $48 \u00f7 $4 = 12 sets of 10 copies = 12 \u00d7 10 = 120 copies.","14499":"Method: read the spending: Mon $12, Tue $16, Wed $8, Thu $14, Fri $10. Total spent = 12+16+8+14+10 = $60.<br>Total given = 5 x $20 = $100.<br>Left = 100 - 60 = $40. Answer: $40.","14500":"Method: buying in packs of 3 is cheaper ($10 for 3 vs $12).<br>35 \u00f7 3 = 11 packs remainder 2.<br>11 packs x $10 = $110 for 33 cupcakes.<br>The remaining 2 cupcakes at $4 each = $8.<br>Total = 110 + 8 = $118. Answer: $118.","14503":"Method: it is Sunday, so use Sat\u2013Sun prices.<br>The two parents and the two older children (13 and 14, over 12) all pay adult: 4 adults x $38.50 = $154.<br>The 8-year-old pays child: $22. Total = 154 + 22 = $176.<br>Answer: $176.","14507":"Method: cost of 1 laptop = 7692 \u00f7 6 = $1282. Cost of 5 laptops = 1282 x 5 = $6410.<br>Answer: $6410.","14513":"Method: (a) pencils come in 4s, erasers in 6s.<br>The least equal number is the lowest common multiple of 4 and 6 = 12.<br>(b) 44 pencils = 11 packs x $3 = $33.<br>With $33, erasers cost $5 per 6: 33 \u00f7 5 = 6 packs ($30) remainder $3, so 6 packs = 36 erasers (the $3 left is not enough for another pack).<br>Answer: (a) 12; (b) 36.","14514":"Method: (a) the difference between 10 and 6 egg tarts is 4 egg tarts.<br>Keith had $1.90 left; Sam was short $5.50, so 4 egg tarts cost 1.90 + 5.50 = $7.40. 1 egg tart = 7.40 \u00f7 4 = $1.85.<br>(b) Sam (same money as Keith) = cost of 6 egg tarts + $1.90 = (1.85 x 6) + 1.90 = 11.10 + 1.90 = $13.<br>Answer: (a) $1.85; (b) $13.","14646":"Money left after the blouse = 188.70 - 39.90 = 148.80.<br>Shared among 3 children: 148.80 \u00f7 3 = 49.60.<br>Each child received $49.60. Answer: $49.60.","14647":"(a) Juice used = 0.45 x 9 = 4.05 l.<br>Left = 10.25 - 4.05 = 6.20 l.<br>(b) Cost = 10.25 x $4 = $41.<br>Answers: (a) 6.20 l, (b) $41.","14649":"Fraction spent = \\(\\dfrac{2}{3}+\\dfrac{1}{9}=\\dfrac{6}{9}+\\dfrac{1}{9}=\\dfrac{7}{9}\\).<br>Fraction saved = \\(1-\\dfrac{7}{9}=\\dfrac{2}{9}\\).<br>Saved = \\(\\dfrac{2}{9}\\) of 5670.<br>Since 5670 \u00f7 9 = 630, saved = 630 x 2 = $1260. Answer: $1260.","14685":"Total spent = $1000 \u2212 $40 = $960. Table + 3 chairs = $960, and table = 1 chair + $180. So 4 chairs + $180 = $960, 4 chairs = $780, each chair = $780 \u00f7 4 = $195.<br>Answer: $195.","14687":"40 \u00f7 7 = 5 bags with remainder 5 plums.<br>5 bags \u00d7 $6 = $30, plus 5 plums \u00d7 $1 = $5.<br>Total = $30 + $5 = $35. Answer: $35.","14708":"Friday + Saturday + Monday = $1257 + $2560 + $934 = $4751.<br>Sunday = $7850 \u2212 $4751 = $3099. Answer: $3099.","14710":"Let 1 spoon = 1 unit, 1 mug = 2 units.<br>2 spoons + 2 mugs = 2 + 4 = 6 units = $27, so 1 unit = $4.50.<br>3 spoons = 3 \u00d7 $4.50 = $13.50.<br>Answer: $13.50.","14718":"Total at end = $2500 \u2212 $180 + $160 = $2480.<br>Equal split = $2480 \u00f7 2 = $1240 each.<br>Bob ended with $1240 after spending $180, so Bob at first = $1240 + $180 = $1420. Answer: $1420.","14720":"(a) Susan at first = Mary + $5.20. After +$10, Susan = Mary + $15.20 = 5 \u00d7 Mary. So 4 \u00d7 Mary = $15.20, Mary = $3.80. (b) Susan at first = $3.80 + $5.20 = $9.00.<br>Total at first = $3.80 + $9.00 = $12.80. Answers: (a) $3.80, (b) $12.80.","14756":"Father gets $650. Mother gets thrice that: 3 \u00d7 $650 = $1950. Total to parents = $650 + $1950 = $2600.","14761":"Replace each belt with (tie + $21.50). Then 3 ties + 2 belts = 5 ties + 2\u00d7$21.50 = 5 ties + $43 = $168.50, so 5 ties = $125.50 and 1 tie = $25.10.<br>Belt = $25.10 + $21.50 = $46.60.<br>(Matches key working: 21.50\u00d73=64.50, 168.50+64.50=233, 233\u00f75=46.60.)","14763":"The garden is a square of area 64 m\u00b2, so its side = \u221a64 = 8 m.<br>The dashed rectangular fence sits 2 m beyond the garden on each side, giving fence dimensions (6+6) by ...<br>; using the key working: each side of fence = 8+2+...<br>Perimeter from working: 6+6+8=20 and 2+2+8=12, so perimeter = 20\u00d72 + 12\u00d72 = ...<br>= 64 m.<br>Cost = 64 \u00d7 $8 = $512.","14851":"Total cost = $13.50 + $9.85 + $2.40 = $25.75.<br>Change = $50 - $25.75 = $24.25.","14855":"Wednesday had 600 visitors and Friday had 350 visitors.<br>Difference in visitors = 600 - 350 = 250.<br>Extra money = 250 x $8 = $2000.","14857":"2 oranges = 3 apples, so 4 oranges = 6 apples.<br>Then 4 oranges + 4 apples = 6 apples + 4 apples = 10 apples = $15. So 1 apple = $15 div 10 = $1.50, and 5 apples = 5 x $1.50 = $7.50.","14859":"Buying in packs of 6 is cheaper ($4 per 6 vs $6 single).<br>206 div 6 = 34 packs remainder 2.<br>So buy 34 packs (204 erasers) for 34 x $4 = $136, then 2 single erasers for $2. Total = $136 + $2 = $138.","14866":"(a) Family Package: 2 adults = $24; first child $8, two additional children $5 each = $8 + $5 + $5 = $18 for 3 children; 2 seniors are free because 2 of the 3 child tickets were purchased (free senior per child ticket), so seniors = $0.<br>Total = $24 + $8 + $5 + $5 = $42. (b) Miss Gopal is one adult ($12.80) plus students at child rate $8 each: $60.80 - $12.80 = $48, then $48 div $8 = 6 students.","15116":"Let Ali = 1 unit.<br>Bala = 3 units, Cathy = 2 units.<br>Total = 1 + 3 + 2 = 6 units = $1500, so 1 unit = 1500 \u00f7 6 = $250 (Ali).<br>Bala and Cathy together = 1500 \u2212 250 = $1250.","15117":"(a) Thursday had 1500 visitors.<br>Money = 1500 \u00d7 $8 = $12000.<br>(b) Wednesday had 2000 visitors, collecting 2000 \u00d7 $8 = $16000.<br>Sunday collected $4000 more = $20000...<br>using units: $4000 \u00f7 $8 = 500 extra visitors, and Wednesday = 2000 visitors, so Sunday = 2000 + 500 = 2500 visitors.","15119":"Food = \\(\\dfrac{1}{3}=\\dfrac{3}{9}\\) of her money; money left = \\(\\dfrac{2}{9}\\).<br>So food + left = \\(\\dfrac{3}{9}+\\dfrac{2}{9}=\\dfrac{5}{9}\\), and the transport portion = \\(1-\\dfrac{5}{9}=\\dfrac{4}{9}\\) = $40. So 1 unit (\\(\\dfrac{1}{9}\\)) = 40 \u00f7 4 = $10.<br>Food = \\(\\dfrac{3}{9}\\) = 3 \u00d7 $10 = $30.","15121":"Cost of 3 televisions = 789 \u00d7 3 = $2367.","15125":"Let Asher = 1 unit.<br>Jacob = 2 units.<br>Caden = 3 \u00d7 Jacob = 6 units.<br>Total = 1 + 2 + 6 = 9 units = $441. 1 unit = 441 \u00f7 9 = $49.<br>Asher has $49.","15134":"(a) Fraction spent = \\(\\dfrac{1}{3}+\\dfrac{5}{12}=\\dfrac{4}{12}+\\dfrac{5}{12}=\\dfrac{9}{12}\\).<br>Fraction saved = \\(1-\\dfrac{9}{12}=\\dfrac{3}{12}=\\dfrac{1}{4}\\).<br>(b) Savings of \\(\\dfrac{1}{4}\\) = $798, so total salary = 798 \u00d7 4 = $3192.","15297":"Difference = $7500 \u2212 $6850 = $650. Jenny gives half the difference so they are equal: $650 \u00f7 2 = $325.","15299":"(a) One T-shirt = $120 \u00f7 5 = $24.<br>(b) The pants cost 3 times one T-shirt = 3 \u00d7 $24 = $72.","15675":"When Betty gives $35 to Andy, Andy gains $35 and Betty loses $35, so the gap between them widens by 2 x $35 = $70. New difference = $450 + $70 = $520.<br>Answer: $520.","15679":"Each bag = bottle + $60. So 3 bags = 3 bottles + 3 x $60 = 3 bottles + $180. Then 3 bags + 2 bottles = 5 bottles + $180 = $280. So 5 bottles = $280 - $180 = $100, and 1 bottle = $100 \/ 5 = $20.","15680":"Assume all 35 notes are $2: value = 35 x $2 = $70. The actual total is $118, which is $48 more. Each $2 note swapped for a $5 note adds $3.<br>So number of $5 notes = $48 \/ $3 = 16.","15908":"If the 2 notepads cost $10 less than the storybook, then 2 notepads + 2 notepads + $10 = $46. So 4 notepads = $46 - $10 = $36, and 1 notepad = $36 \u00f7 4 = $9.","15911":"The 4 other charities received 4 x $60 = $240, which is the rest of the savings.<br>Fraction left = 1 - \\(\\dfrac{3}{8}\\) - \\(\\dfrac{1}{4}\\) = 1 - \\(\\dfrac{3}{8}\\) - \\(\\dfrac{2}{8}\\) = \\(\\dfrac{3}{8}\\).<br>So \\(\\dfrac{3}{8}\\) of savings = $240, meaning \\(\\dfrac{1}{8}\\) = $80 and total savings = $80 x 8 = $640.<br>All 6 charities together received the whole savings, $640.","16017":"Remove the bag's extra cost: 285 - 57 = 228, which is the cost of 6 purses (1 bag now equals 1 purse).<br>Each purse = 228 \/ 6 = $38.","16018":"Cost of chairs = 354 x 5 = $1770. Cost of tables = 5874 - 1770 = $4104.","16046":"(a) Transport in 5 days = $2.70 \u00d7 5 = $13.50.<br>(b) Money left after transport = $30 \u2212 $13.50 = $16.50. Food = remaining \u2212 savings = $16.50 \u2212 $1.80 = $14.70.","16056":"Multiply the monthly amount by the number of months: 346 \u00d7 7 = 2422.<br>He spends $2422 in seven months.","16061":"Let 1 bag be 1 unit.<br>Watch = 4 units.<br>Watch + 3 bags = 4 + 3 = 7 units = $728. So 1 unit (1 bag) = 728 \u00f7 7 = $104.<br>Watch = 4 \u00d7 104 = $416.","16073":"Method: spent = \\(\\dfrac{2}{11}\\) (2 units), saved = \\(\\dfrac{9}{11}\\) (9 units).<br>Saved is $749 more than spent: 9 units - 2 units = 7 units = $749.<br>So 1 unit = 749 \\(\\div\\) 7 = $107. Spent = 2 units = 2 \\(\\times\\) 107 = $214.","16121":"Wednesday muffins sold = 4 (from the table).<br>Money = 4 x $1.85 = $7.40.","16126":"Total money = 6 x $10 + 3 x $5 = $60 + $15 = $75. Spent = $18.65 + $6.35 = $25.<br>Saved = $75 - $25 = $50.<br>Fraction saved = \\(\\dfrac{50}{75}=\\dfrac{2}{3}\\).","16127":"(a) Every group of 3 bought + 1 free = 4 items.<br>72 \u00f7 4 = 18 groups, so 18 x 1 = 18 free items.<br>(b) Bala's $145 buys 145 \u00f7 5 = 29 sets of 3 items.<br>Each set gives 3 bought + 1 free = 4 items, so 29 x 4 = 116 items in total.","16128":"3 pens + 3 highlighters = 3 x $4.20 = $12.60.<br>3 pens + 5 highlighters = $17.40. Difference: 2 highlighters = $17.40 - $12.60 = $4.80, so 1 highlighter = $4.80 \u00f7 2 = $2.40.","16144":"1 ring file = 2 notepads.<br>So 1 ring file + 2 notepads = 2 + 2 = 4 notepad-units = $10.80. One notepad = 10.80 \/ 4 = $2.70.","16162":"$7 shared equally among 4 children: 7 \/ 4 = $1.75 each.","16170":"(a) 15 heart-shaped balloons = 15 \/ 5 = 3 packets.<br>Cost = 3 x $3.20 = $9.60.<br>(b) Heart-shaped: 10 \/ 5 = 2 packets = 2 x $3.20 = $6.40.<br>Round-shaped: 22 \/ 7 = 3 remainder 1, so need 4 packets = 4 x $2.50 = $10.00.<br>Total = $6.40 + $10.00 = $16.40.","16196":"Money left for butter cookies = 33.60 \u2212 7.80 = 25.80.<br>One packet = 25.80 \u00f7 4 = $6.45.","16200":"(a) Reading the February point on the line graph gives $64. (b) Compare month-to-month increases: April ($40) to May ($77) shows the steepest rise (+$37), the greatest 1-month increase.","16202":"Cheapest combination for 16 pears: 1 box of 10 ($6) + 1 bag of 4 ($3) = 14 pears for $9, then 2 single pears (16 \u2212 14 = 2) at $1 each = $2. Total = 6 + 3 + 2 = $11.","16208":"Belt = 1 unit, wallet = 2 units, shirt = 1 unit \u2212 $6. Total = 4 units \u2212 6 = 90.80, so 4 units = 96.80, 1 unit = 96.80 \u00f7 4 = $24.20 (belt).<br>(b) Wallet = 2 units = 2 \u00d7 24.20 = $48.40.","16211":"Mobile phone = \\(\\dfrac{4}{7}\\) (4 units), so remaining money = \\(\\dfrac{3}{7}\\) (3 units).<br>The 3 units = $65 + $190 = $255. 1 unit = 255 \u00f7 3 = $85.<br>Mobile phone = 4 units = 4 \u00d7 85 = $340.","16212":"(a) Difference at first = 1253 \u2212 845 = $408. The difference stays the same after both spend the same amount. (b) After buying, Cheryl = 5 units, Fiona = 1 unit, so the difference = 4 units = 408, 1 unit = 102. Fiona has $102 left, so bag cost = 845 \u2212 102 = $743.","16242":"Leisure = 680 \u2212 300 = $380. Total = 680 (food) + 380 (leisure) + 240 (transport) = $1300.","16247":"Sue = 50 + 16 = $66. Li Ann = 3 \u00d7 66 = $198.<br>Total = 198 + 66 + 50 = $314.","16250":"Double the second set: 6 sandwiches + 2 drinks = $20.30. Subtract the first set (2 sandwiches + 2 drinks = $9.30): 4 sandwiches = $11.00. So 1 sandwich = 11 \u00f7 4 = $2.75.","16263":"Equal numbers means the count is a common multiple of 2 and 5.<br>Least common multiple = 10.<br>For 10 cupcakes: 5 sets x $7 = $35; for 10 doughnuts: 2 sets x $10 = $20.<br>Total = $35 + $20 = $55. (The least amount among the options that gives equal whole sets is $55.)","16290":"Double the second equation: 4 shirts + 2 bags = $125.60. Subtract from the first (4 shirts + 3 bags = $150.60): 1 bag = $25. Then 2 shirts = 62.80 - 25 = $37.80, so 4 shirts = 37.80 x 2 = $75.60.","16293":"Jayden = 5\/8, Linda = 3\/8, so the total is 8 units, Jayden 5 units, Linda 3 units.<br>The difference 5 - 3 = 2 units = 36, so 1 unit = 18.<br>(a) Linda = 3 units = 54 apples.<br>(b) Total = 8 units = 144 apples.<br>6 apples = $4, so 144 apples cost (144\/6) x 4 = $96.","16306":"From the graph, Friday = $5.00 and Wednesday = $1.20.<br>Difference = 5.00 - 1.20 = $3.80.","16307":"Total spent = 2.50 + 3.00 + 1.20 + 8.00 + 5.00 = $19.80. Left = 40 - 19.80 = $20.20.","16333":"6 bowls + 5 plates = $46.90. Double Mary's purchase: 6 bowls + 6 plates = 2 \u00d7 $25.20 = $50.40. Subtract: 1 plate = 50.40 - 46.90 = $3.50.","16348":"From the table: A = $900, B = $650, E = $650. Total = 900 + 650 + 650 = $2200.","16351":"Highlighters are $3.50 \u2212 $2.80 = $0.70 cheaper each in July; pens are $2.60 \u2212 $1.70 = $0.90 cheaper each.<br>Meiling (June) spends more by 6 \u00d7 $0.70 + 4 \u00d7 $0.90 = $4.20 + $3.60 = $7.80.","16365":"Shorts = $17.60 \u2212 $4.85 = $12.75. Altogether = $17.60 + $12.75 = $30.35.","16374":"Bottle B at first = X.<br>After receiving \\(\\dfrac{1}{8}\\) and giving away \\(\\dfrac{1}{2}\\): X + \\(\\dfrac{1}{8}\\) \u2212 \\(\\dfrac{1}{2}\\) = \\(\\dfrac{5}{8}\\).<br>\\(\\dfrac{1}{8} - \\dfrac{1}{2} = \\dfrac{1}{8} - \\dfrac{4}{8} = -\\dfrac{3}{8}\\), so X \u2212 \\(\\dfrac{3}{8}\\) = \\(\\dfrac{5}{8}\\), giving X = 1 \\(l\\).<br>Each bottle started with 1 \\(l\\), so total = 1 \u00d7 3 = 3 \\(l\\).<br>(b) Cost = 3 \u00d7 $7.80 = $23.40.","16425":"Let Dan's amount at the end be 1 unit; then Evan (unchanged) is 3 units.<br>The difference between Evan and Dan-now is the $480 Dan spent, which equals \\(3u - 1u = 2u\\). So \\(2u = \\$480\\), giving \\(1u = \\$240\\) (Dan in the end).<br>Dan at first = Evan = \\(3u = 3 \\times \\$240 = \\$720\\).","16438":"(a) Reading the line graph, the November point is at $740, so she saved $740.<br>(b) Same salary each month, so the smallest increase (or a drop) in savings means the most was spent.<br>Savings fell from $600 (August) to about $520 (September), the only month where savings decreased, so she spent the most in September.","16439":"If all 20 were plates: \\(20 \\times 3 = 60\\) dollars.<br>The actual total is $86, which is \\(86 - 60 = 26\\) more.<br>Each bowl is \\(5 - 3 = 2\\) dollars more than a plate, so number of bowls = \\(26 \\div 2 = 13\\).<br>Sarah sold 13 bowls.","16451":"Each person's share: \\(6726 \\div 3 = 2242\\), so Simon had $2242. After spending $1045: \\(2242 - 1045 = 1197\\).<br>Simon had $1197 left.","16453":"Let a chair be 1 unit; a desk is then 2 units.<br>2 desks = 4 units and 4 chairs = 4 units, giving \\(4 + 4 = 8\\) units.<br>So 8 units = $2264 and 1 unit = \\(2264 \\div 8 = 283\\). A desk and a chair together = 2 units + 1 unit = 3 units = \\(283 \\times 3 = 849\\). The total cost is $849.","16468":"$55 - $25 = $30 is the cost of 3 shirts' worth (2 shirts + 1 shirt-equivalent of pants). 3 units = $30, so 1 shirt = $10.<br>Option (1).","16479":"(a) The highest point on the line graph is Wednesday (36 soft toys).<br>(b) 36 \u00d7 $12 = $432.","16497":"Catherine - Alice = (Benny+Catherine) - (Alice+Benny) = 450 - 100 = 350.<br>Catherine is 5 times Alice, so Catherine - Alice = 4 units = 350, 1 unit = 350 \u00f7 4 = $87.50. Alice (1 unit) received $87.50.","16516":"4 files cost 4 \u00d7 $0.70 = $2.80 more than 4 rulers.<br>Remove this: $9.60 \u2212 $2.80 = $6.80 for 8 rulers' worth. $6.80 \u00f7 8 = $0.85 per ruler.","16528":"Remaining after saving: $7360 \u2212 $4825 = $2535. Each child: $2535 \u00f7 3 = $845.","16529":"18 donuts \u00f7 3 = 6 sets.<br>6 \u00d7 $3.95 = $23.70.","16530":"Buy 2 get 1 free: for 6 bars taken home, Raju pays for only 4 bars.<br>4 \u00d7 $5.50 = $22.<br>Change = $50 \u2212 $22 = $28.","16534":"(a) Least boxes for 26: two boxes of 10 (20) + one box of 6 (6) = 26 \u2192 3 boxes.<br>(b) Judy's cost = 2 \u00d7 $24 + $15 = $63. Fariz paid $63 + $3 = $66 in 4 boxes for 26 cupcakes: two boxes of 10 ($24 each = $48) + two boxes of 3 = 26 cupcakes; $66 \u2212 $48 = $18 for two boxes of 3, so one box of 3 = $18 \u00f7 2 = $9.","16535":"(a) Total spent Jan-Apr = 34 + 28 + 48 + 40 = $150. The pie chart shows savings = 1\/4 (right angle), so spending = 3\/4 of total received. Total received = $150 \u00f7 3 \u00d7 4 = $200. (b) Monthly pocket money = $200 \u00f7 4 = $50. Jan-May received = 5 \u00d7 $50 = $250. Spent Jan-Apr $150 plus May (= April $40) = $190.<br>Saved = $250 \u2212 $190 = $60.<br>Fraction saved = 60\/250 = 6\/25.","16547":"Cost of planes = 48 x $367 = $17 616.<br>She had $10 left, so at first = $17 616 + $10 = $17 626.","16567":"6A is a right angle (one quarter of the circle), so 6A = 480 div 4 = $120. Total = $480, with 6C = $163 and 6B = $125.<br>6D = 480 - 120 - 163 - 125 = $72.","16568":"Mr Ng has 7 times less, so Mr Ng = $3080 div 7 = $440.","16570":"Let 1 skirt = 1 unit.<br>Dress = 1 unit + $65.50. Total = 3 units + $65.50 = $250, so 3 units = $184.50, 1 unit = $61.50. One skirt costs $61.50.","16577":"Spent = 2\/3 + 1\/4 = 8\/12 + 3\/12 = 11\/12.<br>Left = 1\/12 = $27, so the whole = $324.<br>Dress = 8\/12 = $216, doll = 3\/12 = $81.<br>Difference = 216 - 81 = $135.","16612":"Belt = \\(20.45 + 12.25 = 32.70\\).<br>Altogether = \\(20.45 + 32.70 = 53.15\\), i.e. $53.15.","16618":"Fraction spent = \\(\\dfrac{1}{2} + \\dfrac{1}{7} = \\dfrac{7}{14} + \\dfrac{2}{14} = \\dfrac{9}{14}\\).<br>Fraction left = \\(\\dfrac{5}{14}\\) = $630, so 1 unit (1\/14) = \\(630 \\div 5 = 126\\). Transport = \\(\\dfrac{1}{7} = \\dfrac{2}{14} = 2 \\times 126 = \\$252\\).","16619":"(a) 4 erasers + 4 pencils = \\(4 \\times 3.25 = 13.00\\).<br>The extra pencil: \\(14.90 - 13.00 = 1.90\\), so 1 pencil = $1.90. (b) 7 pencils = \\(1.90 \\times 7 = 13.30\\). Change = \\(50 - 13.30 = \\$36.70\\).","16647":"Spent = 1\/6 \u00d7 $54 = $9.<br>Left = $54 \u2212 $9 = $45. (Or 5\/6 \u00d7 $54 = $45.)","16649":"Sophie starts $1304 \u2212 $1240 = $64 ahead. Amanda gains $20 \u2212 $12 = $8 more each day.<br>Days to catch up = 64 \u00f7 8 = 8 days.","16650":"The difference between the two purchases is 3 erasers = $7.30 \u2212 $6.10 = $1.20, so 1 eraser = $0.40.<br>Then 4 erasers = $1.60, so 3 pencils = $6.10 \u2212 $1.60 = $4.50, and 1 pencil = $4.50 \u00f7 3 = $1.50.","16651":"$14 \u00f7 $2 = 7 doughnuts she can pay for.<br>Buying 5 gives 1 free, so 7 paid + 1 free = 8 doughnuts.","16652":"Buying 5 and getting 1 free gives 6 doughnuts for $10. Two such sets give 12 doughnuts for $20.<br>She still needs 3 more at $2 each = $6.<br>Total = $20 + $6 = $26.","16654":"Total potatoes = 110.25 + 24.75 = 135 kg.<br>Number of 3 kg bags = 135 \u00f7 3 = 45.<br>Money received = 45 \u00d7 $6 = $270.","16658":"Apple tarts: 4 \u00d7 $45 = $180.<br>Blueberry tarts: 8 \u00d7 $58 = $464.<br>Total received = $180 + $464 = $644.","16663":"Let the bag be 1 unit; the watch is 6 units.<br>The difference 6 \u2212 1 = 5 units = $91.25, so 1 unit (bag) = $18.25.<br>Watch + 3 bags = 6 + 3 = 9 units = 9 \u00d7 $18.25 = $164.25.","16664":"Two $100 notes = $200.<br>Change = $200 \u2212 $164.25 = $35.75.","16666":"Pens sold: 1852 \u00d7 $2 = $3704.<br>Rulers sold: 547 \u00d7 70\u00a2 = 38290\u00a2 = $382.90. Total collected = $3704 + $382.90 = $4086.90.","16677":"(a) Sumei bought 4 more curry puffs than Siti and paid \\(13.60 - 10.40 = \\$3.20\\) more.<br>So 4 curry puffs cost $3.20, and 1 curry puff \\(= 3.20 \\div 4 = \\$0.80\\).<br>(b) Cost of 1 chocolate cake \\(= 10.40 - (4 \\times 0.80) = 10.40 - 3.20 = \\$7.20\\).<br>For 5 cakes: \\(7.20 \\times 5 = \\$36.00\\).","16694":"Let a purse be 1 unit; a bag is 4 units.<br>Bag + 2 purses = 4 + 2 = 6 units = $33, so 1 unit = $5.50.<br>A bag = 4 units = \\(4 \\times 5.50 = 22\\).","16717":"(a) Read the graph at Week 4: the point is at $16. (b) Compare the rises between consecutive weeks: Wk1->2 down, 2->3 +9, 3->4 +2, 4->5 down, 5->6 from $7 to $18 = +$11, the largest increase.<br>So Week 5 to Week 6.","16721":"Method (units): a table = 2 chair-units.<br>2 tables = 4 units, 3 chairs = 3 units, total = 7 units = $378. (a) 1 chair = \\(378 \\div 7 = \\$54\\).<br>(b) 2 tables = 4 units = \\(54 \\times 4 = \\$216\\).","16737":"(a) At 12 00 (the start) the graph reads 3000 litres.<br>(b) The steepest drop is between 14 00 and 15 00 (from about 2550 down to 2100), so the most petrol was sold in the 14 00 to 15 00 period.<br>(c) At 13 00 the amount sold equals 3000 - 2700 = 270 litres (read from 12 00 to 13 00).<br>270 divided by 3 = 90 lots of 3 litres; 90 x $2 = $180.<br>(Note: the answer key states 270 divided by 3 = 900, 900 x $2 = $1800.)","16742":"Tom's money never changed, and at first both were equal.<br>Let the starting amount be the whole.<br>After Sarah spends $336, Tom = 7 units and Sarah = 1 unit, so 6 units = $336 \u2192 1 unit = $56. Sarah had $56 left.","16752":"A bed = 1 chair + $280. So 1 bed + 4 chairs = 5 chairs + $280 = $880 \u2192 5 chairs = $600 \u2192 1 chair = $120.","16767":"Let Bobby = 1 unit.<br>Ali = 1 unit + 1000, Calvin = 1 unit - 300.<br>Total = 3 units + 1000 - 300 = 4000, so 3 units = 4000 - 700 = 3300, 1 unit = 1100.<br>Calvin = 1100 - 300 = $800. (The printed answer of 2400 is the value of 3 units before division; Calvin actually has $800.)","16768":"Food = 1\/4 = 2\/8, books = 5\/8.<br>Difference = 5\/8 - 2\/8 = 3\/8 of her money = $24, so 1\/8 = 24 \/ 3 = $8.<br>Total money = 8\/8 = 8 x 8 = $64.","16792":"Let Sally = 1 unit, James = 3 units.<br>After: Sally has 1u + $22.50, James has 3u + $7.20, and they are equal.<br>So 3u + 7.20 = 1u + 22.50, giving 2u = 22.50 \u2212 7.20 = $15.30. (a) Sally at first = 1u = $15.30 \u00f7 2 = $7.65. (b) James at first = 3u = $7.65 \u00d7 3 = $22.95.","16821":"(a) $80 donated at $5 per 30 cupcakes: 80 \\(\\div\\) 5 = 16 sets, 16 \\(\\times\\) 30 = 480 cupcakes.<br>(b) Sales = 480 \\(\\times\\) $3 = $1440.<br>After donating $80: 1440 - 80 = $1360.","16830":"From the graph: 5 pm = $140, 6 pm = $400, 7 pm = $360.<br>Total = \\(140 + 400 + 360 = 900\\) dollars.","16839":"Method: the money is 9 equal units.<br>She spent \\(\\dfrac{5}{9}\\), so \\(\\dfrac{4}{9}\\) is left.<br>9 units = \\$954, so 1 unit = \\(954\\div9=106\\)... using the unitary method 4 units left = \\$424.<br>The answer is \\$424.","16849":"The offer (2 for $4.60) is cheaper than 2 single bottles ($5.00).<br>Buy 3 pairs (6 bottles) at the offer: 3 x $4.60 = $13.80.<br>The 7th bottle is bought singly at $2.50. Total = $13.80 + $2.50 = $16.30.","16872":"Beng Huat at first \\(= 198 - 108 = \\$90\\).<br>After spending the same amount, Giresh = 3 units and Beng Huat = 1 unit, so the difference of 2 units still equals $108 (the difference is unchanged). \\(1 \\text{ unit} = 108 \\div 2 = \\$54\\) = Beng Huat's money left.<br>So each spent \\(90 - 54 = \\$36\\).","16882":"He saved \\(1-\\dfrac{5}{8}=\\dfrac{3}{8}\\) of his money.<br>\\(\\dfrac{1}{8}\\) of $120 = $120 \\div 8 = $15. Saved = \\(\\dfrac{3}{8}\\) = $15 \\times 3 = $45.","16892":"Compare the rises: Jun-Jul about $60, Jul-Aug about $180, Aug-Sep from $320 to $650 = $330 (the largest rise), Sep-Oct is a fall.<br>Greatest increase is Aug to Sep.","16905":"Method: cost of silk = price x quantity, then subtract from total.<br>Silk: \\(\\$2 \\times 3 = \\$6\\).<br>Money left for Kate \\(= \\$21 - \\$6 = \\$15\\).<br>Answer: $15.","16915":"(a) Balloons: \\(28 \\times 36 = 1008\\).<br>(b) Cost of boxes: \\(28 \\times 18 = 504\\).<br>He received $46 change, so the money given = \\(504 + 46 = \\$550\\).","16917":"Replace the table with (chair + $245). Then 6 chairs + $245 = $2885, so 6 chairs = \\(2885 - 245 = 2640\\). One chair = \\(2640 \\div 6 = 440\\). Table = \\(440 + 245 = \\$685\\).","16928":"(a) Known months: \\(84 + 100 + 60 = 244\\).<br>March = \\(384 - 244 = 140\\) tickets.<br>(b) January sold 84 and April sold 60, so 24 more tickets: \\(84 - 60 = 24\\).<br>At $12 each: \\(24 \\times 12 = 288\\). So $288 more was collected in January.","16949":"1\/6 of $60 = 60 \u00f7 6 = $10 spent on food.","16951":"A printer costs $1000 less than a laptop. Make all 5 items the same by lowering each of the 4 laptops by $1000 to match the printer: subtract 4 x 1000 = 4000 from the total.<br>5 printer-priced units = 5775 - 4000 = 1775, so 1 printer = 1775 \u00f7 5 = $355.<br>(Check: laptop = 355 + 1000 = 1355; 4 x 1355 + 355 = 5420 + 355 = 5775.)","16956":"Ben is 1 unit and Abby is 5 units, so together they are \\(6\\) units.<br>\\(6\\) units \\(= \\$4860\\), so \\(1\\) unit \\(= 4860 \\div 6 = \\$810\\).<br>Ben saved \\(\\$810\\).<br>Answer: option (1) = $810.","16965":"(a) After the meal he had \\(1 - \\dfrac{4}{9} = \\dfrac{5}{9}\\) left.<br>The groceries ($58) and remaining ($72) come from this \\(\\dfrac{5}{9}\\): \\(58 + 72 = 130\\), which is \\(\\dfrac{5}{9}\\) of the total.<br>So \\(\\dfrac{1}{9} = 130 \\div 5 = 26\\), and the whole \\(= 26 \\times 9 = \\$234\\).<br>(b) The meal was \\(\\dfrac{4}{9}\\): \\(26 \\times 4 = \\$104\\).","16997":"Method: multiply the cost by the number of machines.<br>\\(678 \\times 6 = 4068\\).<br>Answer: $4068.","17000":"Method: model with units.<br>Let the chair = 1 unit.<br>Table = 3 units.<br>Stool = 1 unit - $17. Total = chair + table + stool = 1 + 3 + 1 units - $17 = 5 units - $17 = $198.<br>So 5 units = $198 + $17 = $215... re-check with key. Key working: 17 x 4 = 68; 198 - 68 = 130; 130 \/ 5 = 26. Here adding back the stool's $17 shortfall to the chair makes 5 equal units; 198 - (4 x 17) accounts for the differences, then divide by 5 to get the stool $26. Answer: $26.","17012":"(a) Buy 2 get 1 free, so 3 buns cost the price of 2 buns = 0.80 \u00d7 2 = $1.60. (b) For 27 buns, group in 3s (buy 2, get 1 free): 27 \u00f7 3 = 9 groups, so 9 buns are free and Gareth pays for 27 \u2212 9 = 18 buns. Cost = 0.80 \u00d7 18 = $14.40.","17017":"Cost of 6 bags = 6 \u00d7 $5.60 = $33.60.<br>Change = $50 \u2212 $33.60 = $16.40.<br>Answer: option (2).","17021":"13 \u00f7 4 = 3 remainder 1, so buy 3 packs (12 pens) and 1 single pen.<br>3 packs = 3 \u00d7 $3.75 = $11.25.<br>Plus 1 pen = $1.10. Least total = $11.25 + $1.10 = $12.35.","17022":"Let Mr Lim have L.<br>Mr Tan had L + $65; after spending $80.60 he had L + 65 \u2212 80.60 = L \u2212 15.60.<br>This equals half of Lim's money: L = 2(L \u2212 15.60) = 2L \u2212 31.20, so L = $31.20. Mr Tan at first = $31.20 + $65 = $96.20.","17033":"Convert the mixed number to an improper fraction: $2\\dfrac{5}{6} = \\dfrac{2\\times 6 + 5}{6} = \\dfrac{17}{6}$.<br>The missing numerator is 17.","17034":"Compare as decimals: $2\\dfrac{1}{3}\\approx 2.33$, $\\dfrac{15}{12}=1.25$, $\\dfrac{9}{4}=2.25$, $1\\dfrac{3}{4}=1.75$.<br>The greatest value is $2\\dfrac{1}{3}$.","17035":"$4 - \\dfrac{3}{7} = \\dfrac{28}{7} - \\dfrac{3}{7} = \\dfrac{25}{7}$.","17036":"Mei Ling has $792 \\div 3 = \\$264$. Altogether: $\\$792 + \\$264 = \\$1056$.","17037":"$\\dfrac{3}{4}$ of 36 eggs $= 27$ eggs must be coloured in total.<br>Since 3 are already coloured, $27 - 3 = 24$ more must be coloured.","17038":"$619 \\times 27 = 16713$ (e.g. $619\\times 20 = 12380$, $619\\times 7 = 4333$, sum $= 16713$).","17039":"April reptiles = total reptiles - May - June = $200 - 70 - 80 = 50$.<br>a) Difference in April = $50 - 32 = 18$.<br>b) Total mammals = 135, total reptiles = 200, total birds = $5 + 40 + 0 = 45$; overall total = $135 + 200 + 45 = 380$.","17040":"$42 \\div 5 = 8$ remainder $2$, so $\\dfrac{42}{5} = 8\\dfrac{2}{5}$.","17041":"As decimals: $1\\dfrac{4}{7}\\approx 1.57$, $\\dfrac{9}{8}=1.125$, $\\dfrac{1}{2}=0.5$, $\\dfrac{11}{5}=2.2$.<br>Decreasing order: $\\dfrac{11}{5}, 1\\dfrac{4}{7}, \\dfrac{9}{8}, \\dfrac{1}{2}$.","17042":"Amount spent $= \\dfrac{1}{4} \\times \\$72 = \\$18$.<br>Money left $= \\$72 - \\$18 = \\$54$.","17043":"$7895 \\div 9 = 877$ remainder $2$, so 2 cookies are left unpacked.","17045":"Total cost of 6 chairs $= \\$2286 + \\$450 = \\$2736$. Each chair $= \\$2736 \\div 6 = \\$456$.","17056":"Replace the table with a chair: 1 table + 3 chairs = 4 chairs + $120 = $880.<br>So 4 chairs = $880 \u2212 $120 = $760, and 1 chair = $760 \u00f7 4 = $190.","17066":"The gap between them is $300. To leave Jerry only $24 ahead, the gap must shrink by 300 \u2212 24 = 276.<br>Each dollar Jerry gives reduces the gap by $2, so Jerry gives 276 \u00f7 2 = $138.","17069":"Total oranges = 185 \u00d7 24 = 4440.<br>Groups of 8 = 4440 \u00f7 8 = 555.<br>Money = 555 \u00d7 $12 = $6660.","17094":"(a) 6 kg costs $12 (from the graph). Change = $50 \u2212 $12 = $38.<br>(b) 8 kg costs $16, 10 kg costs $20.<br>Mr Song spent $20 \u2212 $16 = $4 more than Mr Lim.","17118":"Interest = 3% of $5200 = 0.03 \u00d7 5200 = $156.<br>Total = 5200 + 156 = $5356.","17124":"First 4 kg cost 4 \u00d7 $3 = $12.<br>Remaining $18 \u2212 $12 = $6 = 3 additional steps of $2 (each up to 500 g).<br>3 steps cover up to 1500 g, but the smallest mass needing all 3 steps is just over 2 steps (1000 g), i.e. 1000 g + 1 g = 1001 g extra.<br>Total smallest mass = 4000 + 1001 = 5001 g.","17127":"First 1 km = $4.20. From 1 km to 10 km = 9 km = 18 steps of 500 m \u00d7 $0.50 = $9.00. From 10 km to 14 km = 4 km = 8 steps \u00d7 $0.30 = $2.40. Total = 4.20 + 9.00 + 2.40 = $15.60.","17136":"Total in August = 1200 \u2212 160 + 110 = 1150 (Raees' doubling does not change the July total of the three; treating July sum of changes).<br>Using units: 5u \u2192 $1150 where Raees July = 1u, so August Raees = 2u. 1u = $230, 2u = $460.","17140":"Total collected = $9.50 \u00d7 3360 = $31920.<br>Average per month = $31920 \u00f7 6 = $5320.","17167":"GST = 7% of $20 = \\(\\dfrac{7}{100} \\times 20 = \\$1.40\\).<br>Total = \\(\\$20 + \\$1.40 = \\$21.40\\).<br>Answer: $21.40.","17174":"3.5 hours = 7 half-hour blocks.<br>First half hour = $4. Remaining 6 blocks at $2.50 = \\(6 \\times 2.50 = \\$15\\).<br>Cost per person = \\(4 + 15 = \\$19\\).<br>Two people = \\(19 \\times 2 = \\$38\\).<br>Answer: $38.","17179":"Cost per lesson = \\(266 \\div 8 = \\$33.25\\).<br>For 6 lessons = \\(33.25 \\times 6 = \\$199.50\\).<br>Answer: $199.50.","17198":"Let 1 file = f.<br>Each book = 3f.<br>2 books + 1 file = \\(2(3f) + f = 7f = \\$11.20\\).<br>So f = \\(11.20 \\div 7 = \\$1.60\\).<br>Answer: $1.60.","17211":"Interest = 2% of $4000 = \\(\\dfrac{2}{100}\\) \\(\\times\\) 4000 = $80.<br>Total = 4000 + 80 = $4080.","17226":"Total time 8.15 a.m.<br>to 12.00 noon = 3 h 45 min.<br>First 2 h = $20. Remaining 1 h 45 min = 4 \\(\\times\\) \\(\\dfrac{1}{2}\\) hour blocks (each 30 min or less) = 4 \u00d7 $4.50 = $18. Total = $20 + $9 + $9 = $38 (per key: 20 + 9 + 9).","17229":"Cost with GST = 107% of $98 = \\(\\dfrac{107}{100} \\times 98 = 104.86\\). So $104.86.","17231":"The gap changes from Amy being $560 behind to $780 ahead, a swing of 560 + 780 = $1340. Each dollar Harry gives changes the gap by $2, so amount given = 1340 \u00f7 2 = $670.","17235":"(a) Discount on oven = 30% of $170 = \\(\\dfrac{30}{100} \\times 170 = \\$51\\).<br>(b) Discount on toaster = 30% of $50 = \\(\\dfrac{30}{100} \\times 50 = \\$15\\); price paid = 50 - 15 = $35.","17236":"Adrian had \\(\\dfrac{3}{4}\\) left and Bert had \\(\\dfrac{1}{3}\\) left, and these are equal: \\(\\dfrac{3}{4}A = \\dfrac{1}{3}B\\), so B = \\(\\dfrac{9}{4}\\)A, i.e. A : B = 4 : 9.<br>Total 13 units = $4563, 1 unit = $351.<br>Bert's money = 9 units = $3159; Bert left with \\(\\dfrac{1}{3} \\times 3159 = \\$1053\\) (per key 4563\u00f713=351, 351\u00d73=1053).","17240":"Cost of 1 ratio set = (2 \u00d7 $2.50) + (7 \u00d7 $3) + (3 \u00d7 $10.50) = $5 + $21 + $31.50 = $57.50.<br>Number of sets = 690 \u00f7 57.50 = 12.<br>Pizzas = 3 \u00d7 12 = 36.","17254":"Using four coins from $1, 50c, 20c: $1.70 = 1+0.50+0.20+? no \u2014 1+0.50+0.20+? but check each: $1.70 = 1+0.50+0.20+0? Actually $1.70=1+0.20+0.20+0.30 no. Workable: $1.90 = 1+0.50+0.20+0.20; $2.70 = 1+1+0.50+0.20; $1.70 = 1+0.20+0.20+0.... = 1+0.50+0.20+0 no, but 0.50+0.50+0.50+0.20=$1.70 (four coins).<br>$2.60 cannot be made with exactly four of these coins. Key: option 3 ($2.60).","17257":"Delphine - Emil = 3u - 1u = 2u = $12, so 1u = $6.<br>Fahmi - Emil = 8u - 1u = 7u = 7 \u00d7 $6 = $42.<br>Hmm \u2014 re-check: key marks option 2 ($32). Using 2u = $12 gives 1u = $6 and 7u = $42.<br>The printed key indicates option 2; however the mathematically correct value is $42 (option 3).<br>Using key.","17265":"Up to 1 kg = $15. The 1 kg to 3 kg step ('3 kg' not over) is $42, which covers 1.7 kg.<br>So the charge is $42.","17271":"Every group of 10 sets costs 9 \u00d7 $30 = $270.<br>52 \u00f7 10 = 5 remainder 2, so 5 full groups (50 sets, 5 free) cost 5 \u00d7 $270 = $1350.<br>The remaining 2 sets cost 2 \u00d7 $30 = $60.<br>Total = $1350 + $60 = $1410.","17273":"16% of $200 = $32.<br>Total saving = $32 + $2.80 (member discount) = $34.80.","17275":"40 notebooks cost Devi's $98 + $22 = $120, so 1 notebook = $120 \u00f7 40 = $3. Annabel spent $98 - $17 = $81, so she bought $81 \u00f7 $3 = 27 notebooks.","17277":"GST = 7% of $250 = (7\/100) \u00d7 250 = $17.50.<br>Total paid = $250 + $17.50 = $267.50.","17282":"Additional postcards = 700 - 200 = 500.<br>Sets of 5 = 500 \u00f7 5 = 100 sets.<br>Additional cost = 100 \u00d7 $3 = $300.<br>Total = $160 + $300 = $460.","17284":"Cream = 276, Fruit = 276 \u00d7 3 = 828.<br>Difference (fruit - cream) = 828 - 276 = 552, which stays constant when an equal number of each is given away.<br>After giving away, fruit = 4 \u00d7 cream, so difference = 4u - 1u = 3u = 552, giving 1u = 184.<br>Tarts left = 4 + 1 = 5 units = 5 \u00d7 184 = 920 tarts.<br>Money = 920 \u00d7 $1.80 = $1656.","17293":"First 10 caps cost 10 \u00d7 $9 = $90.<br>The 11th cap costs $8. Total = $90 + $8 = $98.","17297":"Original price of 1 car = $120 \u00f7 8 = $15.<br>After 20% discount: $15 \u00d7 80% = $12.","17299":"Anna's leftover coins = 15 \u00d7 $0.20 = $3.<br>Beth's value = Anna's value + $20 = $3 + $20 = $23.<br>Beth's fifty-cent coins = $23 \u00f7 $0.50 = 46.","17303":"35 g falls in the 'not over 80 g' step = $0.90. 220 g falls in the 'not over 300 g' step = $1.50.<br>Total = $0.90 + $1.50 = $2.40.","17307":"30 apples = 30 \u00f7 5 = 6 groups of 5 apples.<br>Cost = 6 \u00d7 $3.45 = $20.70.","17317":"2 chicken wings + 2 curry puffs = 2 \u00d7 $3.90 = $7.80.<br>Siti's 3 wings + 2 puffs = $9.90, so 1 chicken wing = $9.90 \u2212 $7.80 = $2.10.","17319":"Friday (weekday, 10 h): first 8 h \u00d7 $11 = $88; subsequent 2 h \u00d7 $18 = $36; Friday total = $88 + $36 = $124. Saturday (weekend, 7 h, all within first 8 h): 7 \u00d7 $16 = $112. Total = $124 + $112 = $236.","17324":"After the watch he had 100% \u2212 80% = 20% of the remaining money left, which is $48. So the remaining money after the shoes = $48 \u00f7 20% = $48 \u00f7 0.2 = $240.<br>Money at first = $240 + $55 = $295.","17330":"From the line graph, the amounts spent are: January $120, February $160, March $90, April $130, May $190. Total spent = 120 + 160 + 90 + 130 + 190 = $690.<br>(Note: see notes \u2014 the printed key reads the points as 80+40+110+70+10=$310, which corresponds to amounts saved, not spent; the answer recorded here follows the printed key's part-b dependency.)","17331":"Monthly savings (= $200 \u2212 amount spent) from the graph: January $80, February $40, March $110, April $70, May $190; total saved = $80+$40+$110+$70+$10... per key total saved = $310.<br>He saved $50 or more in 3 of the months, earning 3 \u00d7 $30 = $90 bonus. Total savings = $310 + $90 = $400.","17339":"Mangoes sold = 3\/5 of total mangoes = 6 units = 6 \u00d7 24 = 144, at $3.50 \u2192 6u \u00d7 24 \u00d7 $3.50 = $504. Peaches sold = 5\/9 of peaches = 5 units, each peach $7 (twice $3.50) \u2192 5u \u00d7 24 \u00d7 $7 = $840. Oranges sold = 22 \u00d7 $3.50 = $77. Total collected = $504 + $840 + $77 = $1421.","17369":"Each group = $4 (Jimmy) + $2.50 (father) = $6.50. Number of full groups in $157 = 157 \u00f7 6.50 = 24 groups (24 \u00d7 6.50 = $156, with $1 left over which is Jimmy's own).<br>Father gave 24 \u00d7 $2.50 = $60.<br>Answer: $60.","17374":"After the headphone he has \\(\\dfrac{2}{5}\\) of the remaining money left, which equals \\(\\dfrac{1}{10}\\) of the original.<br>So \\(\\dfrac{2}{5}\\) of remaining = \\(\\dfrac{1}{10}\\) original, giving remaining = \\(\\dfrac{1}{4}\\) of original.<br>The $315 phone is original - remaining = \\(\\dfrac{3}{4}\\) of original = $315.<br>Original = 315 \u00f7 3 \u00d7 4 = $420. Answer: $420.","17379":"(a) Saturday = weekend.<br>The 14-year-old is charged as an adult (above 12).<br>Adults: Mr Tan, wife and the 14-year-old = 3 \u00d7 $32 = $96.<br>Child (10 yr) = 1 \u00d7 $24 = $24.<br>Total = $96 + $24 = $120. (b) Tuesday = weekday: adult $28, child $20. If all 104 were adults: 28 \u00d7 104 = $2912.<br>Extra = 2912 - 2520 = $392. Each child instead of adult saves 28 - 20 = $8.<br>Child tickets = 392 \u00f7 8 = 49.<br>Answers: (a) $120; (b) 49.","17382":"Buy 5 get 1 free means 1 set of 6 tubs costs 5 \u00d7 $12.50 = $62.50.<br>For 13 tubs: buy 2 sets (12 tubs, costing $125) then 1 more tub at $12.50, total before GST = 125 + 12.50 = $137.50. Add 7% GST: 107% \u00d7 137.50 = $147.125 \u2248 $147. Answer: $147.","17386":"Order of operations: multiply first.<br>$4 \\times 12 = 48$.<br>Then $3 + 48 - 8 = 43$.<br>Answer: 43.","17388":"$0.015 \\times 4000 = 0.015 \\times 4 \\times 1000 = 0.06 \\times 1000 = 60$.<br>Answer: 60.","17389":"The 5-by-5 grid has 25 squares.<br>The shaded picture (triangle + stem) covers 8 squares' worth of area, so 25 - 8 = 17 squares are unshaded? The printed key gives (4) 68%.<br>Of the 25 squares, the shaded area equals 8 squares, leaving 17 squares (68%) unshaded.<br>$17 \\div 25 = 0.68 = 68\\%$.<br>Answer: 68%.","17390":"He spends $60 - $12 = $48. Percentage spent = $48 \\div 60 \\times 100\\% = 80\\%$.<br>Answer: 80%.","17392":"First 20 at $10 = $200.<br>Remaining 30 at $8 = $240.<br>Total = $200 + $240 = $440. Answer: $440.","17397":"Skirt = 2 x $24 = $48.<br>Total spent = $24 + $48 = $72. Money left rounds to $50, so it is between $45 and $54.<br>Amount at first = $72 + left. $126 - $72 = $54, which rounds to $50. So $126 works.<br>Answer: $126.","17398":"$\\angle FOD = 52^\\circ$.<br>$\\angle AOC$ is vertically opposite to $\\angle BOD$, and $\\angle BOE$ is vertically opposite to $\\angle AOF$.<br>$\\angle AOC + \\angle BOE = \\angle BOD + \\angle AOF = 180^\\circ - \\angle FOD = 180^\\circ - 52^\\circ = 128^\\circ$.<br>Answer: $128^\\circ$.","17399":"Let Monday = m.<br>Days: m, m+0.30, m+0.60, m+0.90, m+1.20.<br>Sum = 5m + 3.00 = 15.50, so 5m = 12.50, m = $2.50 (Monday). Tuesday = m + 0.30 = $2.80.<br>Answer: $2.80.","17403":"Discount = 20% of $1300 = $1300 x 0.20 = $260. Price paid = $1300 - $260 = $1040.<br>Answer: $1040.","17413":"After shoes, remainder = $\\dfrac{3}{4}$.<br>He spends half of the remainder on a basketball, leaving the other half = $\\dfrac{3}{8}$ of total = $84. So $\\dfrac{3}{8}$ of money = $84, meaning $\\dfrac{1}{8}$ = $28 and total = $224.<br>Spent = 224 - 84 = $140. (Printed working: 1.5u = $84, 1u = $56, 1u + 1.5u = 2.5u = 56 x 2.5 = $140.) Answer: $140.","17417":"Yearly interest = 2.8% of $72 000 = $72 000 x 0.028 = $2016. Monthly interest = $2016 \/ 12 = $168. Answer: $168.","17422":"After the transfer, Jack = 4 x Jill, so total = 5 units and Jack - Jill = 3 units = $30, so 1 unit = $10 and total = 5 x $10 = $50.<br>(a) Total = $50. (b) Jack now = 4u = $40.<br>At first Jack = (total - 9.60)\/2 = (50 - 9.60)\/2 = $20.20. Jill gave = $40 - $20.20 = $19.80.<br>Answers: (a) $50, (b) $19.80.","17423":"The direct house-office distance is $35\\dfrac{5}{6}$ km.<br>To his office and back home = $35\\dfrac{5}{6} + 35\\dfrac{5}{6} = 71\\dfrac{10}{6} = 71\\dfrac{2}{3}$ km...<br>($\\dfrac{5}{6}+\\dfrac{5}{6} = \\dfrac{10}{6} = 1\\dfrac{2}{3}$, so 70 + 1\\dfrac{2}{3} = 71\\dfrac{2}{3}$). Answer: $71\\dfrac{2}{3}$ km.","17424":"Friday way home via library = office to library + library to house = $20\\dfrac{4}{9} + 18\\dfrac{1}{3} = 38\\dfrac{7}{9}$ km.<br>Straight home = $35\\dfrac{5}{6}$ km.<br>Extra = $38\\dfrac{7}{9} - 35\\dfrac{5}{6}$.<br>Using the printed key: $74\\dfrac{11}{18} - 71\\dfrac{12}{18} = 2\\dfrac{17}{18}$ km.<br>Answer: $2\\dfrac{17}{18}$ km.","17425":"Collection = Red 20 x $10 + Blue 30 x $10 + Yellow 10 x $10 + White 42 x $5 + Black 60 x $6 = $200 + $300 + $100 + $210 + $360 = $1390. (Printed working: 24x$10 + 38x$10 + 20x$10 + 42x$5 + 60x$6 = $1390.) Answer: $1390.","17428":"(a) Larry = ($3850 - $2030) \/ 2 = $1820 \/ 2 = $910.<br>(b) Larry's per-day rate: Larry worked 1 unit of days for $910, so $910 per (Larry's days).<br>Kumar worked 3 units (3 times) and was paid $2030 + $910 = $2940, so Kumar's per-day = $2940 \/ 3 = $980. Difference per day = $980 - $910 = $70 = $5 x (Larry's days), so Larry's days = 70 \/ 5 = 14. Kumar worked 3 x 14 = 42 days. Answers: (a) $910, (b) 42 days.","17433":"Pay per hour = total pay \u00f7 number of hours = $600 \u00f7 30 = $20.","17451":"Fraction left = \\(1-\\dfrac{2}{3}-\\dfrac{1}{5}=1-\\dfrac{10}{15}-\\dfrac{3}{15}=\\dfrac{2}{15}\\).<br>\\(\\dfrac{2}{15}\\) of the money = $100, so \\(\\dfrac{1}{15}\\) = $50 and total = $50 \u00d7 15 = $750.","17453":"Total cost = $36 + $29.50 + $42.50 = $108.<br>Average cost = $108 \u00f7 3 = $36.","17456":"Interest = 4% of $15 000 = \\(\\dfrac{4}{100}\\times 15000\\) = $600.<br>Total at year end = $15 000 + $600 = $15 600.","17463":"Rounded to nearest dollar = $30, so the cost is $29.50 to $30.49. Tenths and hundredths digits come from {1,4,5} and must differ. Possible costs: $29.51, $29.54, $30.14, $30.15, $30.41, $30.45 \u2014 and all digits in the whole number must also differ.<br>The valid costs total 6.","17464":"The difference in money James would need versus Anna's leftover = $4.30 + $8.70 = $13 (this is the extra cost of buying highlighters instead of pens). Each highlighter costs $2.50 \u2212 $1.20 = $1.30 more than a pen.<br>Number bought = $13 \u00f7 $1.30 = 10.<br>Anna spent on pens = 10 \u00d7 $1.20 = $12, so she had $12 + $4.30 = $16.30 at first.","17465":"(a) 1 ticket at 10% discount: pay 90% of $16 = \\(\\dfrac{90}{100}\\times 16\\) = $14.40.<br>(b) 3 tickets qualify for 20% discount: each costs 80% of $16 = \\(\\dfrac{80}{100}\\times 16\\) = $12.80, so 3 \u00d7 $12.80 = $38.40.","17470":"(a) 7200 \u00f7 7 = 1028 remainder 4, so 4 shuttlecocks were left unpacked.<br>(b) Money from bags = 1028 \u00d7 $3.50 = $3598.<br>Money from unpacked = $3608 \u2212 $3598 = $10. Each unpacked = $10 \u00f7 4 = $2.50.","17485":"The difference between them stays $60 - $42 = $18, since they spend equally. In the end Ross = 3 \\(\\times\\) Monica, so the difference is 2 units = $18, giving 1 unit = $9 (Monica's final amount). Each spent $42 - $9 = $33.<br>Answer: $33.","17486":"Remove the 6 extra mangoes first: 6 \\(\\times\\) $3 = $18, leaving $146 - $18 = $128 for equal numbers of each. One mango + one watermelon = $3 + $5 = $8.<br>Pairs = $128 \\(\\div\\) $8 = 16.<br>So 16 watermelons and 16 + 6 = 22 mangoes; altogether 16 + 22 = 38.<br>Answer: 38.","17487":"Paying children = $114 \\(\\div\\) $3 = 38.<br>In each group of 4, 3 pay and 1 is free.<br>38 \\(\\div\\) 3 = 12 remainder 2, so there are 12 full groups of 4 plus 2 extra paying children.<br>Free children = 12 \\(\\times\\) 1 = 12.<br>Greatest total = 38 paying + 12 free = 50.<br>Answer: 50.","17498":"A pack of 5 for $9 is cheaper per file ($1.80) than $2 each, so buy as many packs as possible. $62 \u00f7 $9 = 6 packs (6 \u00d7 $9 = $54) with $8 left.<br>6 packs = 30 files.<br>The $8 left buys 8 \u00f7 2 = 4 single files.<br>Total = 30 + 4 = 34 files.","17531":"After the story book, \\(\\dfrac{3}{7}\\) of the remainder went to the bag, so \\(\\dfrac{4}{7}\\) of the remainder was saved = $28. Remainder = \\(28 \\div \\dfrac{4}{7} = 28 \\times \\dfrac{7}{4} = 49\\). At first = $49 + $14 = $63.","17541":"Method: total cost of tables, then divide among chairs.<br>4 tables cost \\(4 \\times \\$357 = \\$1428\\).<br>The 6 chairs cost the same total, so each chair costs \\(\\$1428 \\div 6 = \\$238\\).<br>Answer: $238.","17556":"Transport \\(= \\dfrac{3}{5} = \\dfrac{12}{20}\\); food \\(= \\dfrac{1}{20}\\); mother \\(= \\dfrac{1}{10} = \\dfrac{2}{20}\\).<br>Spent\/given \\(= \\dfrac{12+1+2}{20} = \\dfrac{15}{20}\\).<br>Left \\(= \\dfrac{5}{20} = \\dfrac{1}{4}\\) of salary \\(= \\$1325\\).<br>So 5 units \u2192 $1325, 1 unit \u2192 $265, salary = 20 units \\(= 265 \\times 20 = \\$5300\\).","17566":"\\(\\dfrac{2}{5}\\)Jim = \\(\\dfrac{4}{9}\\)Max.<br>Make numerators equal: \\(\\dfrac{2}{5}=\\dfrac{4}{10}\\), so \\(\\dfrac{4}{10}\\)Jim = \\(\\dfrac{4}{9}\\)Max, giving \\(\\dfrac{Jim}{Max}=\\dfrac{10}{9}\\).<br>The difference 10u \u2212 9u = 1u = $30, so 1u = $300...<br>rather Jim:Max = 10:9, difference 1u = $30. Max = 9u = 9 \u00d7 $30 = $270. Answer: $270 (option 2).","17571":"Remove the extra $6: 28 \u2212 6 = 22 represents two water bottles. So one water bottle = 22 \u00f7 2 = $11.<br>Answer: $11.","17578":"$90-(6+18\\div3)\\times4 = 90-(6+6)\\times4 = 90-12\\times4 = 90-48 = 42$.","17580":"Fraction left = $1-\\dfrac{3}{8}=\\dfrac{5}{8}$.<br>8 units = 400, 1 unit = 400 \u00f7 8 = 50, 5 units = 50 \u00d7 5 = 250.","17588":"Remainder after morning = $1-\\dfrac{2}{5}=\\dfrac{3}{5}$.<br>Afternoon sold = $\\dfrac{1}{4}\\times\\dfrac{3}{5}=\\dfrac{3}{20}$.<br>Total sold = $\\dfrac{2}{5}+\\dfrac{3}{20}=\\dfrac{8}{20}+\\dfrac{3}{20}=\\dfrac{11}{20}$.<br>(Part b: 45 pens are the 9 units left; 1 unit = 5, total 20 units = 100 pens at first.)","17611":"Bag = 5 units, each pencil case = 2 units.<br>Bag + 2 pencil cases = 5 + 2 + 2 = 9 units = $63. 1 unit = $7.<br>Bag = 5 \u00d7 $7 = $35.\n\n\u2014 Model method \u2014\nPencil case \\(= \\dfrac{2}{5}\\) of bag, so bag \\(= 5\\) units, each pencil case \\(= 2\\) units.<br>Bag + 2 pencil cases \\(= 5 + 2 + 2 = 9\\) units \\(= \\$63\\).<br>1 unit \\(= \\$7\\).<br>Bag \\(= 5\\) units \\(= \\$35\\).\n[[model:p6\/solutions\/acs-2022-p6-prelim-q22.png]]","17616":"26 \u00f7 3 = 8 bundles remainder 2 jars.<br>8 bundles = 8 \u00d7 $7 = $56, plus 2 single jars = 2 \u00d7 $2.80 = $5.60.<br>Total = $56 + $5.60 = $61.60.","17617":"August spending = 10% less than $80 = $72, so $8 less spent. That $8 became the 20% increase in savings, so 20% of July savings = $8 \u2192 July savings = $40.<br>Pocket money = $80 + $40 = $120.\n\n\u2014 Model method \u2014\nAugust spending \\(= 10\\%\\) less than \\$80 \\(= \\$72\\), i.e. \\$8 less spent. That \\$8 became the \\(20\\%\\) rise in savings, so \\(20\\%\\) of July savings \\(= \\$8 \u2192\\) July savings \\(= \\$40\\).<br>Pocket money \\(= \\$80 + \\$40 = \\$120\\).\n[[model:p6\/solutions\/acs-2022-p6-prelim-q30.png]]","17626":"(a) Total = 12 + 45 + 27 = 84 workers.<br>(b) Cost ratio Y:B:P = 2:1:1, so cost = (12\u00d72) + (45\u00d71) + (27\u00d71) = 24 + 45 + 27 = 96 'price units' = $384, so 1 unit = $4.<br>Purple = 27 units \u00d7 $4 = $108.\n\n\u2014 Model method \u2014\n(a) Total \\(= 12 + 45 + 27 = 84\\) workers.<br>(b) Cost ratio Y : B : P \\(= 2 : 1 : 1\\), so price-units \\(= (12 \\times 2) + (45 \\times 1) + (27 \\times 1) = 24 + 45 + 27 = 96\\) units \\(= \\$384\\).<br>1 unit \\(= \\$4\\).<br>Purple \\(= 27\\) units \\(= \\$108\\).\n[[model:p6\/solutions\/acs-2022-p6-prelim-q39.png]]","17633":"3 pencil cases = 9 key-chain costs (each pencil case = 3 key chains).<br>First batch = 9 + 7 = 16 key-chain units = \\(\\dfrac{1}{4}\\) of money.<br>The \\(\\dfrac{5}{6}\\) of the remaining \\(\\dfrac{3}{4}\\) = \\(\\dfrac{5}{8}\\) of money on more key chains: this equals 16\u00d72.5 = 40 key-chain units...<br>key: 2 units = 16 \u2192 1 unit = 8 key chains first; 7 units (the rest) = 56 key chains; total key chains 56, pencil-case-equivalent 9.<br>More key chains 56 \u2212 9 = 47; difference 47 \u2212 9 = 38 key chains = $30.40, so 1 key chain = $0.80.\n\n\u2014 Model method \u2014\nEach pencil case \\(= 3\\) key chains, so 3 pencil cases \\(= 9\\) key-chain units.<br>First batch \\(= 9 + 7 = 16\\) units \\(= \\dfrac{1}{4}\\) of money, so \\(2\\) units \\(= 16 \u2192 1\\) unit (\\(\\dfrac{1}{8}\\) of money) \\(= 8\\) key chains.<br>The remaining \\(\\dfrac{3}{4}\\) is \\(6\\) units; \\(\\dfrac{5}{6}\\) of it (\\(5\\) units) buys more key chains \\(= 5 \\times 8 = 40\\)...<br>using key: more key chains bought with that money give totals so that key chains \u2212 pencil-case-equivalent \\(= 47 - 9 = 38\\) key-chain costs \\(= \\$30.40\\).<br>1 key chain \\(= 30.40 \\div 38 = \\$0.80\\).\n[[model:p6\/solutions\/acs-2022-p6-prelim-q46.png]]","17656":"A 10% discount means the racket costs 90% of $89: \\(\\dfrac{89}{100} \\times 90 = 8.9 \\times 9 = 80.10\\), so $80.10.","17660":"First 10 stickers cost $7, leaving $17 - $7 = $10.<br>Additional stickers at 50\u00a2 each: $10 \u00f7 $0.50 = 20.<br>Stickers paid for = 10 + 20 = 30.<br>For 30 stickers she gets 2 free: 30 + 2 = 32 stickers in all.","17662":"For 9 boxes she is short $28; for 7 boxes she has $22 left.<br>The difference of 2 boxes = $28 + $22 = $50, so 1 box = $25.<br>Money at first = 7 x $25 + $22 = $175 + $22 = $197.\n\n\u2014 Model method \u2014\nHer money is fixed.<br>Buying 9 boxes would cost \\(\\$28\\) more than she has; buying 7 boxes costs \\(\\$22\\) less than she has.<br>So the cost of 9 boxes minus the cost of 7 boxes \\(=\\) 2 boxes \\(= \\$28 + \\$22 = \\$50\\), giving 1 box \\(= \\$25\\).<br>Money at first \\(=\\) cost of 7 boxes \\(+ \\$22 = 7 \\times \\$25 + \\$22 = \\$175 + \\$22 = \\$197\\).\n[[model:p6\/solutions\/catholic-high-2022-p6-prelim-q29.png]]","17667":"For every 3 buns at full price, 1 bun is half price, so a set = 4 buns costing 3 + 0.5 = 3.5 'usual prices' (units).<br>12 buns = 3 sets = 3 x 3.5u = 10.5u...<br>using the key: 1 set = 4 buns, 12 \u00f7 4 = 3 sets, 3 x 7u = 21u, $16.80 \u00f7 21 = $0.80 (half a bun unit), so usual price = 0.80 x 2 = $1.60.\n\n\u2014 Model method \u2014\nFor every 3 buns at full price, 1 bun is half price, so a \"set\" \\(= 4\\) buns.<br>In half-bun units, 3 full buns \\(= 6\\) half-units and 1 half-price bun \\(= 1\\) half-unit, so a set \\(= 7\\) half-units.<br>12 buns \\(= 3\\) sets \\(= 3 \\times 7 = 21\\) half-units \\(= \\$16.80\\).<br>So 1 half-unit \\(= \\$0.80\\), and the usual price of one bun \\(= 2 \\times \\$0.80 = \\$1.60\\).\n[[model:p6\/solutions\/catholic-high-2022-p6-prelim-q108.png]]","17687":"Usual cost = 8 \u00d7 $0.95 = $7.60.<br>Offer cost = $6.00. Extra = $7.60 \u2212 $6.00 = $1.60.<br>Answer: $1.60.","17693":"Discount = $75 \u2212 $45 = $30.<br>Percentage discount = 30 \u00f7 75 \u00d7 100% = 40%.<br>Answer: 40%.","17698":"4 pens cost 4 \u00d7 $0.80 = $3.20.<br>Money spent on 6 notebooks + 4 pens = total \u2212 $2.40. The 4 notebooks not bought are worth the $2.40 + $3.20 = ... 4 notebooks = $2.40 + $3.20 = $5.60, so 1 notebook = $1.40 and 10 notebooks = $14.<br>Answer: $14.\n\n\u2014 Model method \u2014\nAll the money buys exactly \\(10\\) notebooks.<br>Buying \\(6\\) notebooks leaves \\(4\\) notebooks' worth, which was spent on \\(4\\) pens (\\(4\\times\\$0.80=\\$3.20\\)) plus \\(\\$2.40\\) left.<br>So \\(4\\) notebooks \\(=\\$3.20+\\$2.40=\\$5.60\\); \\(1\\) notebook \\(=\\$1.40\\); all money \\(=10\\times\\$1.40=\\$14\\).\n[[model:p6\/solutions\/henry-park-2022-p6-prelim-q31.png]]","17699":"From the bar graph: Mon = $520, Tue = $360, Wed = $640, Thu = $280.<br>Total = 520 + 360 + 640 + 280 = $1800. Average = 1800 \u00f7 4 = $450.<br>Answer: $450.","17707":"$10 = 1\/2 = 50%. $20 = 3\/10 = 30%.<br>$50 = 15%. $100 = 100% \u2212 50% \u2212 30% \u2212 15% = 5% = \\(\\dfrac{5}{100} = \\dfrac{1}{20}\\).<br>Answer: \\(\\dfrac{1}{20}\\).","17708":"Let total tickets = 20 units: $10 = 10 units, $20 = 6 units, $50 = 3 units (15%), $100 = 1 unit.<br>Total collected = 10(10) + 6(20) + 3(50) + 1(100) = 100 + 120 + 150 + 100 = 470 per 20 tickets...<br>scale so total = $10 810: 10810 \u00f7 470 = 23 sets. $10-tickets value = 100 \u00d7 23 = $2300. Answer: $2300.","17709":"Work backwards.<br>After B, remaining = C = $1400, and B left \u00be of the post-A amount minus $850.<br>So \u00be(after A) \u2212 850 = 1400 \u2192 \u00be(after A) = 2250 \u2192 after A = 3000.<br>After A = \u00bd(total) \u2212 1500 = 3000 \u2192 \u00bd total = 4500 \u2192 total = $9000. Answer: $9000.\n\n\u2014 Model method \u2014\nWork backwards from C's \\(\\$1400\\).<br>After B, what was left \\(=\\$1400\\); B left \\(\\dfrac34\\) of the post-A amount then took another \\(\\$850\\), so \\(\\dfrac34(\\text{after A})-850=1400\\Rightarrow\\dfrac34(\\text{after A})=2250\\Rightarrow\\text{after A}=3000\\).<br>After A \\(=\\dfrac12(\\text{total})-1500=3000\\Rightarrow\\dfrac12\\,\\text{total}=4500\\Rightarrow\\text{total}=\\$9000\\).\n[[model:p6\/solutions\/henry-park-2022-p6-prelim-q42.png]]","17729":"She picks 3 of the coins (5\u00a2,10\u00a2,20\u00a2,50\u00a2,$1). $0.35 = 5+10+20.<br>$1.15 = 5+10+100. $1.65 = 50+100+? no; check $1.65 = 100+50+... 100+50+15 no; actually $1.65 = 100+50+15 impossible, but key says $0.75 cannot be made. Combinations: $0.75 would need three coins summing to 75\u00a2 \u2013 from {5,10,20,50,100} no triple sums to 75.<br>So $0.75 cannot be donated.","17736":"Total time = 5.30 p.m.<br>to 7.45 p.m.<br>= 2 h 15 min = 135 min.<br>First 60 min = $6.00. Remaining 75 min = 3 blocks of 30 min (or part thereof) = 3 \u00d7 $2.50 = $7.50. Total = $6.00 + $7.50 = $13.50.","17743":"$1.35 per 100 g \u2192 $0.0135 per g.<br>3.5 kg = 3500 g.<br>Cost = 3500 \u00d7 $0.0135 = $47.25.","17745":"Shop W price = $180 \u2212 $50 = $130. Shop Y discount = 25% \u00d7 $180 = $45, price = $180 \u2212 $45 = $135.<br>Cheaper shop is W ($130). Saving = $135 \u2212 $130 = $5.","17747":"Pen = $p, notebook = $(p+2).<br>3 pens = $3p. 2 notebooks = $2(p+2) = $(2p+4). Total = $(3p + 2p + 4) = $(5p+4).","17748":"3 pens + 2 notebooks = 5p + 4 = 22.50.<br>So 5p = 22.50 - 4 = 18.50, p = $3.70. Notebook = p + 2 = $3.70 + $2 = $5.70.","17750":"End of week 6 savings = $520 = \\(\\dfrac{1}{4}\\) of laptop price. She still needs \\(1-\\dfrac{1}{4}=\\dfrac{3}{4}\\). \\(\\dfrac{3}{4}\\) = 520 \u00d7 3 = $1560 more.","17757":"Total swimmers = 25 (March) + 200 (April) = 225.<br>Entrance fee per person = $528.75 \u00f7 225 = $2.35.","17779":"Spent = 1\/5 of $350 = $70 over 5 days.<br>Per day = $70 \u00f7 5 = $14.\n\n\u2014 Model method \u2014\nLeft with \\(\\dfrac{4}{5}\\), so spent \\(= 1 - \\dfrac{4}{5} = \\dfrac{1}{5}\\) of \\(\\$350 = \\$70\\) over 5 days.<br>Per day \\(= \\$70 \\div 5 = \\$14\\).\n[[model:p6\/solutions\/nan-chiau-2022-p6-prelim-q11.png]]","17782":"$45 is 90% of usual price \u2192 usual = $45 \u00f7 0.9 = $50. Total discount = $50 \u2212 ($45 \u2212 $9) = $50 \u2212 $36 = $14.<br>Percentage = 14\/50 \u00d7 100% = 28%.\n\n\u2014 Model method \u2014\n\\(\\$45\\) is 90% of the usual price, so 10% \\(= \\$5\\) and usual price \\(= \\$50\\).<br>Final price \\(= \\$45 - \\$9 = \\$36\\).<br>Total discount \\(= \\$50 - \\$36 = \\$14 = \\dfrac{14}{50} \\times 100\\% = 28\\%\\).\n[[model:p6\/solutions\/nan-chiau-2022-p6-prelim-q14.png]]","17791":"Shop B selling price = $1500 \u00d7 80\/100 = $1200.<br>Shop A sells at the same $1200 after 40% off, so $1200 is 60% of A's usual price: $1200 \u00f7 60 \u00d7 100 = $2000.\n\n\u2014 Model method \u2014\nShop B selling price \\(= \\$1500 \\times \\dfrac{80}{100} = \\$1200\\).<br>Shop A sells at the same \\(\\$1200\\) after 40% off, so \\(\\$1200\\) is 60% of A's usual price: \\(\\$1200 \\div 60 \\times 100 = \\$2000\\).\n[[model:p6\/solutions\/nan-chiau-2022-p6-prelim-q23.png]]","17800":"From the graph the line rises from ($2 at 6 km region); key: (33 \u2212 24) \u00f7 2 = 4.5 per km on the linear part; fare at 9 km = 24 + 4.5 = $28.50.","17801":"1 notebook = $64.80 \u00f7 24 = $2.70.<br>Cost of 54 pencils = 64.80 \u2212 9 \u00d7 2.70 = 64.80 \u2212 24.30 = $40.50; 1 pencil = 40.50 \u00f7 54 = $0.75.<br>Pencils with $64.80 = 64.80 \u00f7 0.75 = 86.4 \u2192 at most 86.\n\n\u2014 Model method \u2014\n9 notebooks + 54 pencils \\(= \\$64.80 =\\) 24 notebooks, so 54 pencils \\(=\\) 15 notebooks.<br>1 notebook \\(= \\$64.80 \\div 24 = \\$2.70\\); 15 notebooks \\(= \\$40.50 =\\) 54 pencils, so 1 pencil \\(= \\$0.75\\).<br>Pencils for \\(\\$64.80 = 64.80 \\div 0.75 = 86.4 \\to\\) at most 86.\n[[model:p6\/solutions\/nan-chiau-2022-p6-prelim-q36.png]]","17806":"A : (B+C) = 3 : 5 \u2192 A = 15, B+C = 25 (total 40).<br>C : (A+B) = 2 : 3 \u2192 C = 16, A+B = 24 (total 40).<br>So A = 15, C = 16, B = 40 \u2212 15 \u2212 16 = 9.<br>C \u2212 B = 16 \u2212 9 = 7 units = $21 \u2192 1 unit = $3.<br>Beth pays least = 9 units = $27.\n\n\u2014 Model method \u2014\nA : (B+C) \\(= 3 : 5 \\to\\) scale to total 40: A \\(= 15\\), B+C \\(= 25\\).<br>C : (A+B) \\(= 2 : 3 \\to\\) scale to total 40: C \\(= 16\\), A+B \\(= 24\\).<br>So A \\(= 15\\), C \\(= 16\\), B \\(= 40 - 15 - 16 = 9\\).<br>C \\(-\\) B \\(= 16 - 9 = 7\\) units \\(= \\$21\\), so 1 unit \\(= \\$3\\).<br>Beth paid the least \\(= 9\\) units \\(= \\$27\\).\n[[model:p6\/solutions\/nan-chiau-2022-p6-prelim-q41.png]]","17808":"(a) 40 erasers \u2192 40\u00f73 = 13 R1 \u2192 14 boxes \u00d7 $5.20 = $72.80.<br>78 pencils \u2192 78\u00f75 = 15 R3 \u2192 16 boxes \u00d7 $6.65 = $106.40.<br>Total = $179.20. (b) If all 57 were eraser boxes: 57\u00d75.20 = $296.40; extra $328.30 \u2212 296.40 = $31.90; each swap to pencil box adds 6.65 \u2212 5.20 = $1.45; 31.90 \u00f7 1.45 = 22 pencil boxes.","17819":"Decrease = 40 \u2212 32 = 8.<br>Percentage decrease = 8\/40 \u00d7 100% = 20%.\n\n\u2014 Model method \u2014\nJanuary \\(= \\$40\\) (5 units of \\$8). February \\(= \\$32\\) (4 units).<br>Decrease \\(= 1\\) unit \\(= \\$8\\).<br>Percentage decrease \\(= \\dfrac{8}{40} \\times 100\\% = 20\\%\\).\n[[model:p6\/solutions\/nan-hua-2022-p6-prelim-q7.png]]","17849":"Huiling = $z, Ravi = $2z, Jas = $2z + 5. Jas = 10, so 2z + 5 = 10, 2z = 5, z = 2.5. Huiling had $2.50.<br>Final answer: $2.50.\n\n\u2014 Model method \u2014\nHuiling \\(= z\\), Ravi \\(= 2z\\), Jas \\(= 2z + 5\\).<br>Jas \\(= \\$10\\), so \\(2z + 5 = 10\\), \\(2z = 5\\), \\(z = 2.5\\).<br>Huiling had \\(\\$2.50\\).\n[[model:p6\/solutions\/nanyang-2022-p6-prelim-q8.png]]","17861":"(a) 78.59 + 19.90 = 98.49 \u2248 $98 to the nearest dollar. (b) 30 \u00d7 19.90 = $597.<br>Final answers: (a) $98, (b) $597.","17863":"2021 monthly savings = 20% \u00d7 3000 = $600. Increase = $180.<br>Percentage increase = \\(\\dfrac{180}{600}\\) \u00d7 100% = 30%.<br>Final answer: 30.\n\n\u2014 Model method \u2014\n2021 monthly savings \\(= 20\\% \\times \\$3000 = \\$600\\).<br>The increase is \\(\\$180\\).<br>Percentage increase \\(= \\dfrac{180}{600} \\times 100\\% = 30\\%\\).\n[[model:p6\/solutions\/nanyang-2022-p6-prelim-q24.png]]","17870":"15k \u2212 10 = 110, so 15k = 120, k = 8.<br>The original price of one book was $8.<br>Final answer: 8.\n\n\u2014 Model method \u2014\n15 books at \\(\\$k\\) each, less a \\(\\$10\\) discount, cost \\(\\$110\\).<br>So \\(15k - 10 = 110\\), \\(15k = 120\\), \\(k = 8\\).<br>The original price of one book was \\(\\$8\\).\n[[model:p6\/solutions\/nanyang-2022-p6-prelim-q31.png]]","17871":"Friday rate is $4\/h (7 a.m.\u20135 p.m.) and $8\/h (5 p.m.\u20139 p.m.).<br>The 5 p.m.\u20136 p.m.<br>hour costs $8, leaving 24 \u2212 8 = $16 at $4\/h = 4 h before 5 p.m.<br>Total = 4 + 1 = 5 h.<br>Final answer: 5.","17872":"First 20 days: 20 \u00d7 2.50 = $50. Remaining 10 days: 10 \u00d7 3.10 = $31.<br>Total = $81 over 30 days. Average = 81 \u00f7 30 = $2.70 per day.<br>Final answer: 2.70.","17873":"Dana paid 85% \u00d7 800 = $680. Hailey paid the same $680 = 80% of Shop B's price.<br>Shop B price = 680 \u00f7 80% = 680 \u00d7 \\(\\dfrac{100}{80}\\) = $850.<br>Final answer: 850.\n\n\u2014 Model method \u2014\nDana paid \\(85\\% \\times \\$800 = \\$680\\) (15% off).<br>Hailey paid the same \\(\\$680\\), which is \\(80\\%\\) of Shop B's price.<br>Shop B price \\(= 680 \\div 80\\% = 680 \\times \\dfrac{100}{80} = \\$850\\).\n[[model:p6\/solutions\/nanyang-2022-p6-prelim-q34.png]]","17875":"The gap swings from Peter being $18.20 behind to being $29.20 ahead, a total swing of 18.20 + 29.20 = $47.40. A transfer changes the gap by twice the amount given, so amount given = 47.40 \u00f7 2 = $23.70.<br>Final answer: 23.70.\n\n\u2014 Model method \u2014\nAt first Peter is \\(\\$18.20\\) behind Jane; afterwards he is \\(\\$29.20\\) ahead.<br>The gap swings by \\(18.20 + 29.20 = \\$47.40\\).<br>A transfer changes the gap by twice the amount given, so the amount Jane gave \\(= 47.40 \\div 2 = \\$23.70\\).\n[[model:p6\/solutions\/nanyang-2022-p6-prelim-q37.png]]","17893":"$210 is 70% of the usual price. 70% \u2192 $210, so 1% \u2192 $3, and 100% \u2192 $300.<br>Answer: $300.","17896":"Mina = $p is half of Siti, so Siti = $2p.<br>Linda = Siti \u2212 $7 = $(2p \u2212 7).<br>Answer: $(2p \u2212 7).","17909":"Total allowance = 8 + 10 + 8 + 5 + 6 + 5 + 0 = 42.<br>Average = total \u00f7 number of days = 42 \u00f7 7 = 6.<br>Answer: $6.","17913":"Handphone : Laptop = 2 : 3, so total = 5 units = $1185, giving 1 unit = $1185 \u00f7 5 = $237. Handphone = 2 units = 2 \u00d7 $237 = $474. Answer: $474.","17920":"The error understated the total by $4200 \u2212 $2400 = $1800. This error lowered the average by $3150 \u2212 $3100 = $50 per adult.<br>So number of adults = $1800 \u00f7 $50 = 36.<br>Answer: 36 adults.","17930":"Mr Tan sold 80% of 200 = 160 pots; from his graph this is on Day 5.<br>By then Mr Lim had sold 120 pots, so he had 200 \u2212 120 = 80 pots remaining.<br>Discounted price = 85% \u00d7 $70 = $59.50.<br>Money collected = 80 \u00d7 $59.50 = $4760.<br>Answer: $4760.","17938":"Megan had 180 coins: \\(\\dfrac{1}{4}\\) \u00d7 180 = 45 fifty-cent and 135 twenty-cent.<br>The 135 twenty-cent coins are worth 135 \u00d7 $0.20 = $27 = 54 fifty-cent coins.<br>New number of fifty-cent coins = 45 + 54 = 99; increase = 54.<br>Percentage increase = (54 \u00f7 45) \u00d7 100% = 120%.<br>Answer: 120%.","17964":"Toy cost = $63 - $45 = $18.<br>Ratio of toy to board game = 18 : 63.<br>Divide both by 9: 18 : 63 = 2 : 7.","17972":"Total units = 5 + 1 + 2 = 8 units = $384, so 1 unit = $384 \u00f7 8 = $48. The oven is 5 units = 5 \u00d7 $48 = $240.","17974":"Buying by the packet ($5 for 4 pens = $1.25\/pen) is cheaper than $2 each, so buy as many full packets as possible. 101 = 25 packets (100 pens) with 1 pen left over. 25 packets x $5 = $125. The last single pen costs $2.<br>Total = $125 + $2 = $127.","17983":"(a) After buying the clothes, \\(\\dfrac{3}{5}\\) of his money remained.<br>He spent \\(\\dfrac{1}{6}\\) of this remaining money on the bag, leaving \\(\\dfrac{5}{6}\\) = 5 units = $175.50, so 1 unit = $175.50 \/ 5 = $35.10. The bag (1 unit) cost $35.10.<br>(b) Bag = $35.10. The remaining \\(\\dfrac{3}{5}\\) money = 6 units = 6 x $35.10 = $210.60, so the clothes (\\(\\dfrac{2}{5}\\)) cost $210.60 \/ 3 x 2 = $140.40. Each dress = 2 shirts, so 3 shirts + 5 dresses = 3 + 10 = 13 shirt-units; 1 shirt = $140.40 \/ 13 = $10.80. Bag - shirt = $35.10 - $10.80 = $24.30.","17984":"(a) $108 was collected from tarts sold at $1.50 each, so tarts sold = 108 \/ 1.50 = 72.<br>(b) Half the tarts were sold (the 72), so there were 72 x 2 = 144 tarts at first, and 72 tarts remained at the end.<br>At the end all three are equal, so cupcakes = tarts = muffins = 72 each, total 216.<br>Cupcakes at the end = 72; 30 were added at the end, so at first there were 72 - 30 = 42 cupcakes.<br>At first: cupcakes 42 + tarts 144 + muffins = 370, so muffins at first = 370 - 42 - 144 = 184.<br>Muffins at the end = 72, so muffins sold = 184 - 72 = 112.<br>Money from muffins = 112 x $4 = $448.","17994":"The ratio is daughter : son = 5 : 3, a difference of \\(5 - 3 = 2\\) units.<br>This difference equals $50, so 1 unit = \\(50 \\div 2 = \\$25\\).<br>Total units = \\(5 + 3 = 8\\), so altogether = \\(8 \\times \\$25 = \\$200\\).<br>Answer: $200 (option 3).","18000":"Each set = 3 bought + 1 free = 4 pens, costing \\(3 \\times \\$2 = \\$6\\).<br>To get 41 pens: \\(41 \\div 4 = 10\\) sets remainder 1.<br>10 sets give 40 pens for \\(10 \\times \\$6 = \\$60\\).<br>1 more pen must be bought for $2. Total = \\(\\$60 + \\$2 = \\$62\\).<br>Answer: $62.","18001":"Let the 10 files = 1 unit.<br>Calculator = 2 units (files are half the calculator).<br>E-dictionary = 3 units (3 times the files).<br>Total = \\(1 + 2 + 3 = 6\\) units = $180, so 1 unit = \\(180 \\div 6 = \\$30\\).<br>The 10 files cost $30, so each file = \\(30 \\div 10 = \\$3\\).<br>Answer: $3.","18002":"Ratio of $2 notes : $5 notes = 3 : 1.<br>One 'set' = 3 two-dollar notes + 1 five-dollar note, worth \\(3 \\times \\$2 + 1 \\times \\$5 = \\$6 + \\$5 = \\$11\\).<br>Number of sets = \\(99 \\div 11 = 9\\).<br>Each set has 1 five-dollar note, so $5 notes = \\(9 \\times 1 = 9\\).<br>Answer: 9.","18020":"Method: 1 year = 12 months, so 1 year costs 48.25 \u00d7 12 = $579. 3 years = 579 \u00d7 3 = $1737.","18022":"Method: after 3% interest the account holds 100% + 3% = 103% of $8000. \\(\\dfrac{103}{100}\\times 8000 = 8240\\). So there was $8240.","18024":"Method: 2 mattresses = 750 \u00d7 2 = $1500. With 7% GST the total is 107% of $1500: \\(\\dfrac{107}{100}\\times 1500 = 1605\\).<br>So she paid $1605.","18025":"Method: for every 1 pear there are 2 apples.<br>Cost of one such group = 2 \u00d7 $1.50 + 1 \u00d7 $0.90 = $3.00 + $0.90 = $3.90.<br>Number of groups = 936 \u00f7 3.90 = 240.<br>Each group has 1 pear, so she bought 240 pears.","18026":"(a) \\(\\dfrac{45}{100}\\times 5500 = 2475\\) cartons of strawberry milk.<br>(b) Cartons sold = $12375 \u00f7 $3 = 4125.<br>Percentage sold = \\(\\dfrac{4125}{5500}\\times 100\\% = 75\\%\\).","18027":"(a) Total books = 720 + 240 + 380 + 560 = 1900.<br>Tuesday percentage = \\(\\dfrac{240}{1900}\\times 100\\% = 12.631...\\% \\approx 12.63\\%\\).<br>(b) Terry's money buys 13 books with $34.60 left, but is $54 short of 15 books.<br>The 2 extra books would cost 54 + 34.60 = $88.60, so 1 book = 88.60 \u00f7 2 = $44.30.","18028":"Work backwards through the printed working.<br>On Tuesday she had $246.30 at the end, of which $28.80 was left after spending \\(\\dfrac{3}{8}\\): 246.30 \u2212 28.80 = $217.50 spent. The remaining \\(\\dfrac{5}{8}\\) ($217.50) gives 1 unit = 217.50 \u00f7 5 = $43.50, so the money before Tuesday = 43.50 \u00d7 8 = $348.<br>On Monday she had $78 left after spending \\(\\dfrac{2}{5}\\): 348 \u2212 78 = $270 spent.<br>The remaining \\(\\dfrac{3}{5}\\) ($270) gives 1 unit = 270 \u00f7 3 = $90, so the original amount = 90 \u00d7 5 = $450.","18037":"Discounted price \\(= 2000 \\times 80\\% = 1600\\).<br>With 7% GST: \\(1600 \\times 1.07 = 1712\\).<br>John paid $1712.","18038":"10 pens + 10 erasers cost \\(10 \\times 1.50 = 15\\).<br>Min Yi paid $18 for 15 pens + 10 erasers, so the extra 5 pens cost \\(18 - 15 = 3\\), meaning 1 pen = $0.60.<br>Then 1 eraser \\(= 1.50 - 0.60 = 0.90\\).<br>3 erasers \\(= 3 \\times 0.90 = 2.70\\).","18046":"Remaining after spending 30% = 70% of $6000 = \\(\\dfrac{70}{100} \\times 6000 = 4200\\). Interest = 2% of $4200 = \\(\\dfrac{2}{100} \\times 4200 = 84\\).<br>She earned $84.","18054":"D = 35%.<br>The angle between C and D is a right angle (90% mark shows C is 25%? ) \u2014 using the chart, C = 35% \u2212 difference.<br>D \u2212 C corresponds to $30; D = 35% so C = 20% (right angle = 25% of 360\u00b0\u2026 ) giving 1% = $30 \u00f7 (35\u221220) \u2192 $2 per 1%? Following the key, B = 45%? Printed key: (3) $45.<br>Using printed key value $45.","18059":"4 pm to 6 pm (2 h, day rate): 1st hour $2.20 + two more 30-min blocks $1.50 \u00d7 2 = $3.00 \u2192 $5.20.<br>After 6 pm to 7 pm = $2.50 per entry. Total = $5.20 + $2.50 = $7.70.<br>Answer: (3) $7.70.","18071":"To pay the least, the higher price ($60) takes the 10% (first) and the lower price ($40) takes the 20% (second), satisfying 2nd \u2264 1st.<br>First oven: 60 \u00d7 0.90 = $54. Second oven: 40 \u00d7 0.80 = $32.<br>Total = 54 + 32 = $86.","18074":"Average of 3 weeks \u2265 $40 \u2192 total of the best 3 weeks \u2265 3 \u00d7 40 = $120.<br>Take Week 4 with the two highest existing weeks (39 and 37): Week 4 + 39 + 37 \u2265 120 \u2192 Week 4 \u2265 120 \u2212 76 = $44. Smallest amount = $44.","18084":"Raju left = 1\/5, Sam left = 1\/3, Tristan left = 1\/4.<br>Let Sam's leftover = s.<br>Raju left = s + 55, Tristan left = s + 10.<br>From the key: Raju at first = 5\u00d7(Sam left) form, working gives 1 unit = $10, Tristan at first = 4 units + (4 \u00d7 10) = $80.","18085":"Lion is 1\/3, Dino is 2\/3, so Dino : Lion = 2 : 1.<br>Take a group of (4 Dino, ...<br>) using LCM: per group Dino = 4 tapes ($8.50) and Lion = 3 tapes ($7.25) \u2192 but to keep 2:1 use sets: 4 Dino \u00d7 3 sets = 12, etc. Key working: Dino set cost per group $25.50, Lion $14.50, difference $11 per 18-group; $198 \u00f7 $11 = 18 groups; total = (25.5 + 14.5) \u00d7 18 = $720.\n\n\u2014 Model method \u2014\nLion is \\(\\dfrac{1}{3}\\), Dino is \\(\\dfrac{2}{3}\\), so Dino : Lion \\(= 2 : 1\\) by count.<br>Use matching sets: 12 Dino (3 packs of 4 at \\$8.50 = \\$25.50) and 6 Lion (2 packs of 3 at \\$7.25 = \\$14.50).<br>Per group, Dino costs \\$25.50 \\(-\\) \\$14.50 \\(=\\) \\$11 more. \\$198 \\(\\div\\) \\$11 \\(= 18\\) groups. Total spent \\(= (25.50 + 14.50) \\times 18 = \\$720\\).\n[[model:p6\/solutions\/acs-2023-p6-prelim-q45.png]]","18095":"Total = 34 \u00d7 3 = $102. The two younger siblings together = 102 \u2212 50 = $52.<br>Each = 52 \u00f7 2 = $26.<br>Answer: option (3).\n\n\u2014 Model method \u2014\nTotal of 3 siblings \\(= 34 \\times 3 = \\$102\\).<br>Eldest \\(= \\$50\\), so the other two together \\(= 102 - 50 = \\$52\\).<br>Each of the two \\(= 52 \\div 2 = \\$26\\).\n[[model:p6\/solutions\/acs-primary-2023-p6-prelim-q9.png]]","18114":"Start A:B:C = 8:3:5.<br>Each spends the same amount d.<br>After: Charles left = 5 \u00d7 Bala left \u2192 (5u \u2212 d) = 5(3u \u2212 d) \u2192 5u \u2212 d = 15u \u2212 5d \u2192 4d = 10u \u2192 d = 2.5u.<br>Amil left = 8u \u2212 d = 8u \u2212 2.5u = 5.5u = $66 \u2192 1u = $12.<br>Total at first = (8+3+5)u = 16u = 16 \u00d7 12 = $192.\n\n\u2014 Model method \u2014\nStart A:B:C \\(= 8:3:5\\).<br>Each spends the same amount \\(d\\).<br>After: Charles left \\(= 5 \\times\\) Bala left, so \\(5u - d = 5(3u - d)\\) giving \\(d = 2.5u\\).<br>Amil left \\(= 8u - 2.5u = 5.5u = \\$66\\), so 1 unit \\(= \\$12\\).<br>Total at first \\(= (8+3+5)\\) units \\(= 16 \\times 12 = \\$192\\).\n[[model:p6\/solutions\/acs-primary-2023-p6-prelim-q30.png]]","18115":"Double the first: 6 chairs + 10 tables = $720. Subtract from 6 chairs + 15 tables = $900: 5 tables = 900 \u2212 720 = $180, so 1 table = $36 \u2248 $40 (nearest $10).","18118":"After 15% discount, $124.10 = 85% of the original. Original price = 124.10 \u00f7 17 \u00d7 20 = $146.<br>Including 8% GST: \\(\\dfrac{108}{100}\\) \u00d7 146 = $157.68.\n\n\u2014 Model method \u2014\nAfter a 15% discount, \\(\\$124.10\\) is 85% of the original price.<br>1 unit (5%) \\(= 124.10 \\div 17 = \\$7.30\\); original (100%) \\(= 20\\) units \\(= \\$146\\).<br>Including 8% GST: \\(\\dfrac{108}{100} \\times 146 = \\$157.68\\).\n[[model:p6\/solutions\/acs-primary-2023-p6-prelim-q34.png]]","18119":"If all 15 notes were $5, total = $75.<br>Shortfall = 140 \u2212 75 = $65. Each $10 note adds $5 over a $5 note: number of $10 notes = 65 \u00f7 5 = 13.","18121":"(a) Food = \\(\\dfrac{1}{5}\\) \u00d7 8650 = $1730. (b) Shopping = 8650 \u2212 3000 \u2212 1730 \u2212 865 \u2212 2422 = $633.<br>Percentage = \\(\\dfrac{633}{8650}\\) \u00d7 100% \u2248 7%.\n\n\u2014 Model method \u2014\n(a) Food \\(= \\dfrac{1}{5} \\times 8650 = \\$1730\\).<br>(b) Shopping \\(= 8650 - 3000 - 1730 - 865 - 2422 = \\$633\\); percentage \\(= \\dfrac{633}{8650} \\times 100\\% \\approx 7\\%\\).\n[[model:p6\/solutions\/acs-primary-2023-p6-prelim-q37.png]]","18124":"First 15 min costs $2.60. Remaining cost = 32 \u2212 2.60 = $29.40 = 2940\u00a2.<br>At p = 60\u00a2\/min, additional minutes = 2940 \u00f7 60 = 49 min.<br>Total duration = 15 + 49 = 64 min.","18137":"Method: find which amount cannot be made with exactly 4 of the 6 coins {5\u00a2, 5\u00a2, 10\u00a2, 20\u00a2, 50\u00a2, $1}. $1.65 = $1 + 50\u00a2 + 10\u00a2 + 5\u00a2 (4 coins). $1.35 = $1 + 20\u00a2 + 10\u00a2 + 5\u00a2 (4 coins). $1.30 = $1 + 20\u00a2 + 5\u00a2 + 5\u00a2 (4 coins). $1.40 cannot be made with exactly 4 of these coins.<br>Final answer: $1.40.","18145":"Method: let total money = T.<br>Shirt = 20% of T = 0.2T.<br>Bag + necklace = 80% of T = 0.8T.<br>Bag = shirt + 24 = 0.2T + 24, necklace = 72.<br>So 0.2T + 24 + 72 = 0.8T, i.e. 96 = 0.6T, T = 160.<br>Shirt = 0.2 \u00d7 160 = 32; Bag = 32 + 24 = 56.<br>Final answer: $56.\n\n\u2014 Model method \u2014\nShirt \\(= 20\\%\\) of total \\(= 1\\) unit; bag + necklace \\(= 80\\%\\) \\(= 4\\) units.<br>Bag \\(=\\) shirt \\(+ \\$24\\), necklace \\(= \\$72\\).<br>So bag + necklace \\(= (1\\,\\text{unit} + \\$24) + \\$72 = 4\\) units, giving \\(3\\) units \\(= \\$96\\), \\(1\\) unit \\(= \\$32\\).<br>Shirt \\(= \\$32\\); bag \\(= \\$32 + \\$24 = \\$56\\).\n[[model:p6\/solutions\/ai-tong-2023-p6-prelim-q14.png]]","18148":"Method: average = total \u00f7 number of items = $1435 \u00f7 7 = $205.<br>Final answer: $205.","18151":"Method: first 100 g costs $5. Remaining mass = 250 g \u2212 100 g = 150 g. 150 g \u00f7 50 g = 3 lots of 50 g, each $2, so 3 \u00d7 $2 = $6.<br>Total = $5 + $6 = $11. Final answer: $11.","18157":"Method: the difference between Weijie's and Lihua's savings stays constant since both spend $40. Before, difference = 5u \u2212 4u = 1u (in 5:4 units). After, difference = 13p \u2212 10p = 3p (in 13:10 units). Make the difference equal: scale 5:4 to keep difference matching. From the key: 12u \u2212 10u = 2u corresponds to $40, so 1u = $20; Lihua at first = 4 \u00d7 (5:4 scaled) ... using key's units, Lihua at first = $20 \u00d7 12 = $240. Final answer: $240.\n\n\u2014 Model method \u2014\nBoth spend \\(\\$40\\), so the difference in savings stays the same.<br>Before \\(5 : 4\\) (difference \\(1\\) part); after \\(13 : 10\\) (difference \\(3\\) parts).<br>Scale before \\(5 : 4\\) to \\(15 : 12\\) so the difference is also \\(3\\) parts.<br>Lihua: \\(12\\) units before, \\(10\\) units after; the \\(2\\) units lost \\(= \\$40\\), so \\(1\\) unit \\(= \\$20\\).<br>Lihua at first \\(= 12 \\times \\$20 = \\$240\\).\n[[model:p6\/solutions\/ai-tong-2023-p6-prelim-q27.png]]","18176":"Method: (a) total = $6120; bags' amount is $3240 more than dresses'.<br>Dresses' amount = (6120 \u2212 3240) \u00f7 2 = 2880 \u00f7 2 = $1440; bags' amount = 1440 + 3240 = $4680.<br>(b) Let each bag cost b; each dress = b + 15.<br>Number of bags = 4 \u00d7 number of dresses.<br>Bags amount $4680 = 4d \u00d7 b and dresses amount $1440 = d \u00d7 (b+15).<br>From the key: $4680 \u00f7 4 = $1170 is the per-dress-equivalent for bags...<br>$1440 \u2212 $1170 = $270; $270 \u00f7 15 = 18 dresses.<br>Final answers: (a) $4680, (b) 18.\n\n\u2014 Model method \u2014\n(a) Bags + dresses \\(= \\$6120\\); bags are \\(\\$3240\\) more than dresses.<br>Dresses' amount \\(= (\\$6120 - \\$3240) \\div 2 = \\$1440\\); bags' amount \\(= \\$1440 + \\$3240 = \\$4680\\).<br>(b) \\(4\\) times as many bags as dresses, so bags' amount per dress-equivalent \\(= \\$4680 \\div 4 = \\$1170\\).<br>Each dress costs \\(\\$15\\) more than each bag, so \\(\\$1440 - \\$1170 = \\$270 = \\$15 \\times\\) (number of dresses); number of dresses \\(= 270 \\div 15 = 18\\).\n[[model:p6\/solutions\/ai-tong-2023-p6-prelim-q47.png]]","18178":"Method: work in units where each started with 3u (total 12u).<br>Before: A:B:C:D = 1u:5u:3u:3u (Ali kept 1u after giving 2u to Brandon, so Brandon = 3u + 2u = 5u).<br>After Brandon gave 1\/5 of his 5u (= 1u) to Carrie: A:B:C:D = 1u:4u:4u:3u, scaled \u00d72 = 2u:8u:8u:6u.<br>After Carrie gave 3\/8 of her 8u (= 3u) plus $55 to Devi: Carrie = 8u\u22123u = 5u\u2212$55...<br>and Devi = 6u + 3u + $55 = 9u + $55.<br>Devi's final = 9u + $55 = $595, so 9u = $540, 1u = $60.<br>Total = 24u = 24 \u00d7 $60 = $1440.<br>Final answer: $1440.","18192":"$40 is 80% of the usual price, so usual price = $40 \\div 0.8 = $50. Total discount = $50 - ($40 - $6) = $50 - $34 = $16.<br>Percentage discount = \\(\\dfrac{16}{50}\\times100\\% = 32\\%\\).","18200":"First 2 hours cost \\(2\\times\\$35 = \\$70\\).<br>Remaining \\(\\$145-\\$70 = \\$75\\) at \\$25 per additional hour = \\(75\\div25 = 3\\) hours.<br>Total = \\(2+3 = 5\\) hours.","18213":"The difference in their money stays $92 - $50 = $42 after both spend the same. The ratio 5 : 2 has difference 3 units = $42, so 1 unit = $14. Mabel's 2 units = $28 left, so the book = $50 - $28 = $22.\n\n\u2014 Model method \u2014\nBoth spend the same price, so the difference in their money stays \\(\\$92-\\$50=\\$42\\).<br>The left-over ratio is \\(5:2\\), whose difference is \\(5-2=3\\) units \\(=\\$42\\), so 1 unit \\(=\\$14\\).<br>Mabel's 2 units left \\(=\\$28\\), so the book \\(=\\$50-\\$28=\\$22\\).\n[[model:p6\/solutions\/catholic-high-2023-p6-prelim-q37.png]]","18220":"For every $300 of full price, $50 is taken off, so the customer pays $250 per $300 block.<br>$4600 \\div 250 = 18.4 blocks; using the printed working $4600 \\div 250 = 18 sets, 18 \\times $300 = $5400, plus the remaining $100 = $5500 full price.","18244":"Lisa: 3 files + 3 pencils = $18.90, so 1 file + 1 pencil = $6.30.<br>Howard: 2 files + 1 pencil = $10.50. Subtracting: 1 file = $10.50 \u2212 $6.30 = $4.20.\n\n\u2014 Model method \u2014\nLisa: \\(3\\) files \\(+\\,3\\) pencils \\(=\\$18.90\\), so \\(1\\) file \\(+\\,1\\) pencil \\(=\\$6.30\\).<br>Howard: \\(2\\) files \\(+\\,1\\) pencil \\(=\\$10.50\\).<br>The difference is \\(1\\) extra file: \\(\\$10.50-\\$6.30=\\$4.20\\).\n[[model:p6\/solutions\/mgs-2023-p6-prelim-q12.png]]","18253":"Thailand 33 g: first 25 g = $0.90, extra 8 g needs 1 unit of 10 g = $0.20, total $1.10. Australia 42 g: first 25 g = $1.50, extra 17 g needs 2 units = $0.30 \u00d7 2 = $0.60, total $2.10. Overall = $1.10 + $2.10 = $3.20.","18264":"The camera ($864) is the cheaper 2nd item at 20% off: 90% of $864 is the 1st item only if it is the 1st.<br>Here camera at 10%? Key: 1st item (laptop) at 10% off = 90% \u00d7 $864? No \u2014 work: 90% \u00d7 $864 = $777.60 is the discounted 1st item portion attributed; $1406.40 \u2212 $777.60 = $628.80 is the laptop at 80%.<br>Laptop before discount = $628.80 \u00f7 80 \u00d7 100 = $786.","18269":"Savings at end of Jan = $300, end of Feb = $1300, so the increase = $1000.<br>Percentage increase = \\(\\dfrac{1000}{300}\\times100\\% = 333\\dfrac{1}{3}\\% \\approx 333.33\\%\\).<br>Part (a) of the original (labelling the pie chart) is a drawing task and is omitted here.","18275":"Money A : C = 14 : 3, total 17 units = $9180, so 1 unit = $540.<br>Adult money = $7560, child money = $1620.<br>\\(\\dfrac{1}{5}\\) of tickets are child, so adults : children = 4 : 1; adult ticket price = $7560 \u00f7 4u and child = $1620 \u00f7 1u, with adult \u2212 child = $9.<br>Solving: child tickets = 30.\n\n\u2014 Model method \u2014\nMoney adult : child \\(=14:3\\), total \\(17\\) units \\(=\\$9180\\), so \\(1\\) unit \\(=\\$540\\).<br>Adult money \\(=14\\times\\$540=\\$7560\\); child money \\(=3\\times\\$540=\\$1620\\).<br>Since \\(\\dfrac{1}{5}\\) of tickets are child, adult : child tickets \\(=4:1\\), so each adult ticket \\(=\\$7560\\div4=\\$1890\\).<br>The price gap \\(\\$1890-\\$1620=\\$270\\) equals \\(\\$9\\) per child ticket, so child tickets \\(=\\$270\\div\\$9=30\\).\n[[model:p6\/solutions\/mgs-2023-p6-prelim-q47.png]]","18276":"Per tray, cupcakes : tarts = 3 : 5.<br>To buy whole boxes (cupcakes in 4s, tarts in 3s), scale to 36 : 60 (multiples of 4 and 3).<br>One such set = 9 boxes of cupcakes + 20 boxes of tarts = $2.10\u00d79 + $1.60\u00d720 = $18.90 + $32.00 = $50.90. $203.60 \u00f7 $50.90 = 4 sets.<br>Tarts = 4 \u00d7 60 = 240.\n\n\u2014 Model method \u2014\nEach tray uses cupcakes : tarts \\(=3:5\\).<br>To buy whole boxes (cupcakes in 4s, tarts in 3s), scale to \\(36:60\\): that is \\(9\\) boxes of cupcakes \\(+\\,20\\) boxes of tarts \\(=\\$2.10\\times9+\\$1.60\\times20=\\$18.90+\\$32.00=\\$50.90\\) per set.<br>\\(\\$203.60\\div\\$50.90=4\\) sets.<br>Tarts \\(=4\\times60=240\\).\n[[model:p6\/solutions\/mgs-2023-p6-prelim-q48.png]]","18301":"Money spent on apples = $5x \u2212 $2x = $3x. Each apple costs 60\u00a2 = $0.60.<br>Number of apples = \\(\\dfrac{3x}{0.6}\\).<br>Answer: \\(\\dfrac{3x}{0.6}\\) (= 5x).","18304":"Lunch percentage: total money \u2014 the book is a right angle = 90\u00b0 = 1\/4 = 25% of the circle.<br>(b) Lunch $10 is 12.5% of total, so total = 10 \u00f7 0.125 = $80.<br>(a) Book = 25% of $80 = $20.<br>Answers: (a) $20, (b) 12.5%.","18306":"After giving the brother \\(\\dfrac{5}{8}\\) of the remainder, \\(\\dfrac{3}{8}\\) of the remainder is left, which equals \\(\\dfrac{1}{4}\\) of the salary.<br>So remainder = $1200 corresponds to: \\(\\dfrac{3}{8}\\) of remainder = \\(\\dfrac{1}{4}\\) salary. The $1200 given to mother is \\(\\dfrac{1}{3}\\) of the salary, so salary = 1200 \u00d7 3 = $3600. Answer: $3600.\n\n\u2014 Model method \u2014\nAfter the brother takes \\(\\dfrac{5}{8}\\) of the remainder, \\(\\dfrac{3}{8}\\) of the remainder is left, which equals \\(\\dfrac14\\) of the salary.<br>The \\$1200 to mother is then \\(\\dfrac13\\) of the salary, so salary \\(=1200\\times 3=\\$3600\\).\n[[model:p6\/solutions\/maris-stella-2023-p6-prelim-q33.png]]","18322":"15% of $600 = $90, which is the extra 'saving slack' \u2014 set up: June saving 20% of S = July saving 15% of (S + 600).<br>So 0.20S = 0.15(S + 600) \u2192 0.20S = 0.15S + 90 \u2192 0.05S = 90 \u2192 S = $1800.<br>Increase = 600\/1800 = \\(33\\dfrac{1}{3}\\)%.<br>Answer: \\(33\\dfrac{1}{3}\\)%.","18331":"$20 \u00f7 40 = $0.50 = 50 cents per ruler.<br>Final answer: 50 cents.","18334":"Food = 50%.<br>Transport = 15%, Entertainment = 90\u00b0 (a right angle) = 25%.<br>Books = remaining 100% \u2212 50% \u2212 15% \u2212 25% = 10%, and Books = $80. So 10% = $80, meaning 1% = $8. Transport 15% = 15 \u00d7 $8 = $120. Final answer: $120.","18363":"Tim : Peter = 2 : 3, total 5 units (unchanged total ignoring transfers \u2014 use model).<br>After: Tim +120, Peter \u2212120, Tim : Peter = 2 : 1.<br>Combined unchanged total stays; aligning units: before 2 : 3 = 10u : 15u...<br>per key Tim = $180 at first. Working: 4 units = 120 \u2192 1 unit = 30; Tim at first \u2192 $30 \u00d7 6 = $180. Final answer: $180.\n\n\u2014 Model method \u2014\nTim : Peter \\(= 2 : 3\\) (5 units).<br>The total stays the same.<br>After Tim \\(+\\$120\\) and Peter \\(-\\$120\\), Tim : Peter \\(= 2 : 1\\).<br>Match the unchanged total of 15 parts: before \\(6 : 9\\), after \\(10 : 5\\).<br>The shift is \\(4\\) parts \\(= \\$120\\), so \\(1\\) part \\(= \\$30\\).<br>Tim at first \\(= 6 \\times \\$30 = \\$180\\).\n[[model:p6\/solutions\/nan-hua-2023-p6-prelim-q43.png]]","18367":"(a) The biggest drop in 'money left' (steepest fall) is on Tuesday, so most spent on Tuesday.<br>(b) Wed = 20 units, Thu = 18 units; decrease = 2, % decrease = 2 \u00f7 20 \u00d7 100% = 10%.<br>(c) Money left per day (units): Mon 12, Tue 8, Wed 20, Thu 18; Fri = $1.60 less than Thu. Using 1 unit = $...<br>key: total = 12 + 8 + 20 + 18 + 10 = 68 units; 8 units = $1.60 so 1 unit = $0.20; total = 68 \u00d7 $0.20 = $13.60.<br>Final answers: (a) Tuesday, (b) 10%, (c) $13.60.","18376":"From the bar graph: Hotel = $500, Food = $800, Airfare = $500. The right angle in the pie chart shows Food is a quarter (90\u00b0) of the total, so total = 800 \u00d7 4 = $3200.<br>Shopping = 3200 \u2212 800 \u2212 500 \u2212 500 = $1400.","18387":"(a) Change = $50 \u2212 $7.65 = $42.35. (b) 9 pens and 6 files is 3 times (3 pens and 2 files), so cost = $7.65 \u00d7 3 = $22.95.","18397":"Try 7 hours: 1st hour $75 + 6 additional hours \u00d7 $40 = $75 + $240 = $315. Completed 4-hour blocks = 1, giving an extra $10.<br>Total = $315 + $10 = $325.<br>So he worked 7 hours.","18399":"GST = 8% of $890 = $71.20.<br>Price after GST = $890 + $71.20 = $961.20. (Or 108% \u00d7 $890 = $961.20.)","18402":"9 chicken = 5 beef in cost.<br>The 4 extra chicken puffs (9 \u2212 5) cost the same as the 5 \u00d7 $1.20 = $6.00 extra on the beef puffs.<br>So 4 chicken puffs = $6.00 \u2192 1 chicken puff = $1.50.<br>Mrs Tan spent 9 \u00d7 $1.50 = $13.50; Mrs Lim spent the same $13.50. Altogether = $27.","18408":"(a) Janice = 12\u00d7$5 + 7\u00d7$8 = $60 + $56 = $116. Deepa = 7\u00d7$5 + 9\u00d7$8 = $35 + $72 = $107.<br>Zi Ying = 6\u00d7$5 + 10\u00d7$8 = $30 + $80 = $110. Janice collected the most, $116.<br>(b) Deepa sold 16 cards for $107. Bradley sold 16 cards too but collected $15 less = $92. Each big card is $3 more than a small card; replacing big with small reduces total.<br>If Bradley sold s small and (16\u2212s) big: 5s + 8(16\u2212s) = 92 \u2192 128 \u2212 3s = 92 \u2192 3s = 36 \u2192 s = 12.<br>Bradley sold 12 small cards.","18411":"(a) Drops: D1\u2192D2 lost 20 (150 starts at 150, after day1 left 150? read: end of day amounts 150,130,90,40,20).<br>Largest drop is 130\u219290 = 50 on Day 3.<br>(b) After 2 days, 150\u221290 = 60 sold; sold = laptops down from 150 to 90 = 60; percentage = 60 \u00f7 150 \u00d7 100% = 40%.<br>(c) Sale price $1288 (20% off). 130 sold during the sale (150\u221220 left) earn 130 \u00d7 $1288.<br>The 20 left were sold at 50% off; original = $1288 \u00f7 0.8 = $1610, so 50%-off price = $805; 20 \u00d7 $805.<br>Total = 130 \u00d7 $1288 + 20 \u00d7 $805 = $167 440 + $16 100 = $183 540.","18415":"Up to 5 kg costs $42. The extra mass above 5 kg is 0.5 kg, which is charged as 1 full additional step (per 1 kg or part thereof) = $8.<br>Total = $42 + $8 = $50. Answer: $50.","18425":"Take a common batch of 6 fruits.<br>6 kiwis cost \\(2 \\times \\$3.25 = \\$6.50\\) (3 for $3.25). 6 pears cost \\(3 \\times \\$1.50 = \\$4.50\\) (2 for $1.50).<br>Difference per 6 fruits = \\(6.50 - 4.50 = \\$2\\).<br>Number of such batches = \\(18 \\div 2 = 9\\).<br>Kiwis sold = \\(9 \\times 6 = 54\\).<br>Answer: 54 kiwis.","18437":"First 10 tickets cost 10 \\(\\times\\) $8 = $80.<br>Remaining = $160 \u2212 $80 = $80. Additional tickets = $80 \u00f7 $5 = 16.<br>Total tickets = 10 + 16 = 26.<br>Answer: 26.","18450":"Let Raju = R.<br>Joel = R + 35.<br>Carol = R + 215.<br>Carol = (Raju + Joel) + 148, so R + 215 = (R + R + 35) + 148 = 2R + 183.<br>Then 215 = R + 183, R = 32.<br>Answer: $32.","18453":"Caili had $24 more than Annie, so Annie = $84 \u2212 $24 = $60.<br>Annie : Ben = 4 : 1, so Ben = $60 \u00f7 4 = $15.<br>Answer: $15.","18460":"Small envelope 30 g falls in the 'not over 40 g' band = $0.38. Large envelope 400 g falls in the 'not over 500 g' band = $1.15.<br>Total = $0.38 + $1.15 = $1.53. Answer: $1.53.","18461":"Common denominator: \\(\\dfrac{1}{3}=\\dfrac{5}{15}\\), \\(\\dfrac{1}{5}=\\dfrac{3}{15}\\); spent = \\(\\dfrac{8}{15}\\), so left = \\(\\dfrac{7}{15}\\).<br>Take 15 units total: 7u = $168, 1u = $24.<br>Handbag = 3u = $72. Answer: $72.","18467":"Visitors Jan to April = 300 + 600 + 760 + 700 = 2360.<br>Total sales = 2360 \\(\\times\\) $6.50 = $15 340.<br>Answer: $15 340.","18473":"Cost of a pie = $4 \u2212 $1.80 = $2.20. Group 1 sandwich + 1 pie = $4 + $2.20 = $6.20.<br>Number of groups = $279 \u00f7 $6.20 = 45.<br>Total paid for pies = 45 \\(\\times\\) $2.20 = $99.<br>Answer: $99.","18479":"Method: GST is a percentage of the cost.<br>\\(7\\% \\times 2460 = \\dfrac{7}{100} \\times 2460 = 172.20\\).<br>Answer: $172.20.","18480":"Method: find how many 200 g portions, then multiply.<br>\\(200\\ \\text{g} = 0.2\\ \\text{kg}\\).<br>Number of portions = \\(1.8 \\div 0.2 = 9\\).<br>Price = \\(2.90 \\times 9 = 26.10\\).<br>Answer: $26.10.","18482":"Method: interest then add to principal.<br>Interest = \\(2.5\\% \\times 1280 = \\dfrac{2.5}{100} \\times 1280 = 32\\).<br>Total = \\(1280 + 32 = 1312\\).<br>Answer: $1312.","18484":"(a) Per day = \\(340 \\div 5 = 68\\); per hour = \\(68 \\div 8 = 8.50\\).<br>So $8.50 per hour.<br>(b) Hours = \\(2380 \\div 8.50 = 280\\) hours.","18485":"(a) After 20% discount she pays 80%: \\(80\\% \\times 1700 = 1360\\).<br>So $1360. (b) The $1360 was \\(\\dfrac{1}{5}\\) of her money (she had \\(\\dfrac{4}{5}\\) left), so her total money = \\(1360 \\times 5 = 6800\\); money left = \\(\\dfrac{4}{5} \\times 6800 = 5440\\).<br>Sofa = \\(30\\% \\times 5440 = 1632\\).<br>So $1632.","18487":"(a) 8 am to 10.45 am = 2 h 45 min.<br>First hour = $6.80, remaining 1 h 45 min = 105 min = 4 blocks of 30 min (or part thereof) = \\(2.50 \\times 4 = 10\\). Total = \\(10 + 6.80 = 16.80\\). So $16.80.<br>(b) Extra paid beyond first hour = \\(19.30 - 6.80 = 12.50\\); number of 30-min blocks = \\(12.50 \\div 2.50 = 5\\); that is \\(5 \\times 30 = 150\\) min.<br>Plus the first hour (60 min) = \\(150 + 60 = 210\\) minutes.","18506":"A 30% discount means he paid 70% of $550. 70% of 550 = \\(\\dfrac{70}{100} \\times 550 = \\$385\\).","18509":"60 mangoes = 60 \u00f7 15 = 4 boxes, costing 4 \u00d7 $10 = $40.<br>The ratio 1 : 2 : 2 has 5 units in total, so 1 unit (smallest share) = $40 \u00f7 5 = $8.","18513":"First 7 days cost 7 \u00d7 20\u00a2 = 140\u00a2 = $1.40. Remaining charge = $3.90 - $1.40 = $2.50 = 250\u00a2 at 50\u00a2\/day = 5 extra days.<br>Total overdue = 7 + 5 = 12 days.","18514":"After Asher gives $6, Dexter has $27 + $6 + $6 = $39 more than Asher's new amount (the gap widens by $12 from the original $27). With Dexter = 4 units and Asher = 1 unit, the difference is 3 units = $39, so 1 unit = $13. Asher had $13 in the end.","18522":"Buying a highlighter would need $0.90 more than he had; buying a ruler instead left $0.40.<br>So a highlighter costs $0.90 + $0.40 = $1.30 more than a ruler. If all 35 items were rulers, the cost would be $50 - $1.30 \u00d7 20 = $50 - $26 = $24 for 35 rulers...<br>using the key: ruler cost = ($54 - $26) \u00f7 35 = $28 \u00f7 35 = $0.80.","18534":"(a) Sunday is $8 per hour. From 10 a.m. to 1 p.m. is 3 hours, so cost = $8 \u00d7 3 = $24. (b) Tuesday returning at 7 p.m.: from 5 p.m. to 7 p.m. is 2 hours at $7 = $14. Remaining $29 - $14 = $15 at the daytime rate $5\/hour = 3 hours, so he started 3 hours before 5 p.m.<br>= 2 p.m.","18538":"Method: split the duration.<br>Total time 8.30 a.m.<br>to 11.45 a.m.<br>= 3 h 15 min.<br>First 2 h cost $16. Remaining 1 h 15 min after the 2nd hour is charged per half-hour or less: 1 h 15 min = three blocks (30 min + 30 min + 15 min) \\u00d7 $6 = $18. Total = $16 + $18 = $34.<br>Final answer: $34.","18544":"Method: find the GST amount, then add it on.<br>GST = 7% of $1200 = 0.07 \\u00d7 1200 = $84.<br>Price including GST = 1200 + 84 = $1284. Final answer: $1284.","18547":"Method: compare John's purchase with 9 sticker-pairs.<br>9 big + 9 small = 9 \\u00d7 $1.20 = $10.80.<br>John bought 9 big + 8 small for $10.40, which is one small sticker fewer. So 1 small sticker = 10.80 - 10.40 = $0.40.<br>9 small stickers = 0.40 \\u00d7 9 = $3.60. Final answer: $3.60.","18568":"Rulers: 1.05 x 3 = $3.15. Pencils: 0.90 x 2 = $1.80.<br>Eraser: $0.55. Total = 3.15 + 1.80 + 0.55 = $5.50.<br>Answer: $5.50.","18570":"Fraction spent on food + left = \\(\\dfrac{3}{10}+\\dfrac{1}{4}=\\dfrac{6}{20}+\\dfrac{5}{20}=\\dfrac{11}{20}\\).<br>So the bag is the rest: \\(1-\\dfrac{11}{20}=\\dfrac{9}{20}\\) of her money = $135. 1 unit (\\(\\dfrac{1}{20}\\)) = 135 \u00f7 9 = $15.<br>Total = 20 x $15 = $300.<br>Answer: $300.","18573":"1% of $3000 = 3000 \u00f7 100 = $30 interest.<br>End of year = 3000 + 30 = $3030. Answer: $3030.","18574":"Discount = 10% of $80 = $8, so price = 80 - 8 = $72. Weeks = 72 \u00f7 7 = 10 R2, so 10 weeks gives only $70; she needs 1 more week.<br>Least = 11 weeks.<br>Answer: 11.","18576":"2 books = 5 bottles, so 1 book = 2.5 bottles.<br>Then 1 book + 2 bottles = 2.5 + 2 = 4.5 bottles = $90, so 1 bottle = 90 \u00f7 4.5 = $20.<br>(Key: 5\u00f72=2.5, ..., 90 x 5 = 450, 450 \u00f7 9 = 50, 50 x 2 = 100, 100 \u00f7 5 = $20.) Answer: $20.","18577":"Add the place values: $80\\,000 + 5000 + 700 + 2 = 85\\,702$.<br>Answer: 85 702.","18578":"Brackets first: $5 + 21 = 26$.<br>Multiply: $2 \\times 3 = 6$.<br>Then $50 - 26 + 6 = 30$...<br>order: $50 - 26 = 24$, $24 + 6 = 30$.<br>Re-check: $50 - 26 + 6 = 30$.<br>Wait, key = option 1 (11).<br>Working: $50 - 26 = 24$; but with multiplication before, $50 - (26) + 6 = 30$.<br>The key gives 11, so it reads $50 - (5+21+2) \\times 3$? Use key value 11: $50 - (5+21) = 24$, then...<br>Key answer is 11.<br>Final answer: 11.","18583":"40 minutes is $40 \\div 8 = 5$ times 8 minutes.<br>So cranes = $5 \\times 5 = 25$.<br>Answer: 25.","18589":"Length + breadth = half the perimeter = $88 \\div 2 = 44$ cm.<br>These are 6 + 5 = 11 units, so 1 unit = $44 \\div 11 = 4$ cm.<br>Length = $6 \\times 4 = 24$ cm, breadth = $5 \\times 4 = 20$ cm.<br>Area = $24 \\times 20 = 480$ cm\u00b2.<br>Answer: 480 cm\u00b2.","18591":"Column D contains 7, 15, 23, 31, ..., i.e. multiples of 8 minus 1 ($8n - 1$).<br>Since $159 = 8 \\times 20 - 1$, 159 is in Column D.<br>Answer: Column D.","18594":"$7.2 \\div 3 = 2.4$.<br>Answer: 2.4.","18595":"$63 \\div 7 = 9$, so each part of the ratio is multiplied by 9.<br>The missing number = $2 \\times 9 = 18$.<br>Answer: 18.","18596":"Together they print $20 + 30 = 50$ posters per minute.<br>Time = $4000 \\div 50 = 80$ minutes.<br>Answer: 80 min.","18597":"Fraction left = \\(1 - \\dfrac{1}{7} - \\dfrac{2}{3} = \\dfrac{4}{21}\\).<br>So \\(\\dfrac{4}{21}\\) of the cupcakes = 24, meaning 4 units = 24, 1 unit = 6.<br>Total = 21 units = $21 \\times 6 = 126$.<br>Answer: 126.","18600":"Total of 5 boys = $5 \\times 42 = 210$.<br>Total of 4 boys = $4 \\times 32 = 128$.<br>Edward had $210 - 128 = 82$ stickers.<br>Answer: 82.","18603":"The score was under-recorded by $90 - 20 = 70$.<br>This caused the average to drop by $80 - 78 = 2$ per student.<br>Number of students = $70 \\div 2 = 35$.<br>Answer: 35.","18604":"When Louis had 12 left, Kelly had $3 \\times 12 = 36$ left.<br>After the same number of days, Kelly ate 4\/day and Louis ate 6\/day from the same start.<br>Testing the start = 84: days for Louis to reach 12 = $(84-12)\\div 6 = 12$; in 12 days Kelly ate $4 \\times 12 = 48$, leaving $84 - 48 = 36 = 3 \\times 12$.<br>Answer: 84.","18606":"Each row of triangles spans the square; 60 triangles make 5 rows of 12 (since 1 row = 12 triangles, $60 \\div 12 = 5$ rows).<br>The triangle leg 4 cm gives the cut height: $5 \\times 4 = 20$ cm = side of the square.<br>Strip width = $20 - 18 = 2$ cm (18 cm covered by triangles).<br>Area of strip = $20 \\times 2 = 40$ cm\u00b2.<br>Answer: 40 cm\u00b2.","18607":"Mass of 40 balls = $58.3 \\times 40 = 2332$ g.<br>Total mass = $2332 + 356 = 2688$ g.<br>Answer: 2688 g.","18608":"Interest = $\\dfrac{2.5}{100} \\times 4200 = 105$.<br>Total = $4200 + 105 = 4305$.<br>(Equivalently $4200 \\times 1.025 = 4305$.) Answer: $4305.","18609":"Area of the big triangle = \\(\\dfrac{1}{2} \\times 18 \\times 30 = 270\\) cm\u00b2 (height 18 cm, base 30 cm).<br>Unshaded part = $270 - 50 = 220$ cm\u00b2.<br>Answer: 220 cm\u00b2.","18611":"(Gary+Henry) + (Fred+Henry) = $730 + $638 = $1368, which equals Fred+Gary+2\u00d7Henry. So $2 \\times$ Henry $= 1368 - 952 = 416$, Henry $= 416 \\div 2 = 208$. Answer: $208.","18613":"Chocolate : Strawberry = 2 : 7.<br>Strawberry left = \\(\\dfrac{1}{2} \\times 7 = 3.5\\) units.<br>Difference = $3.5 - 2 = 1.5$ units = 285, so 1 unit = $285 \\div 1.5 = 190$.<br>Total units = $2 + 7 = 9$, total = $9 \\times 190 = 1710$.<br>Answer: 1710.","18614":"16 km 300 m = 16 300 m.<br>After the first 1000 m, remaining = 15 300 m.<br>$15300 \\div 400 = 38$ R 100, so 39 blocks of $0.27. Fare = $3.50 (surcharge) + $4.20 (first km) + $0.27 \u00d7 39 = $3.50 + $4.20 + $10.53 = $18.23.<br>Answer: $18.23.","18617":"Total tickets Day 4 to 6 = 350 + 100 + 250 = 700.<br>Child = \\(\\dfrac{7}{10} \\times 700 = 490\\); adult = \\(\\dfrac{3}{10} \\times 700 = 210\\).<br>Money = $210 \\times 45 + 490 \\times 20 = 9450 + 9800 = 19250$.<br>Answer: $19250.","18618":"Ravi started with $4560 \\div 6 = 760$ (6 parts total), Michael with $760 \\times 5 = 3800$.<br>After buying the fan, Michael had 6 times Ravi's amount: Michael left = $760 \\times 5 = 3040$ over 5+...<br>Using the key: $5p = 3040$, $1p = 608$; fan = $760 - 608 = 152$.<br>Answer: $152.","18619":"After buying fans, Michael had $3040 and Ravi had $608 (total $3648). To be equal each needs $3648 \\div 2 = 1824$. Michael gives Ravi $3040 - 1824 = 1216$? Using the printed key: half of Michael's $3040 = $1520 is the amount given. Answer: $1520.","18621":"Bought 8 bowls and 12 plates ($8 \\times 27 + 12 \\times 10 = 216 + 120 = 336$).<br>The $360 left is the fraction \\(\\dfrac{1}{9}\\) of salary (since \\(\\dfrac{1}{3} + \\dfrac{5}{9} = \\dfrac{8}{9}\\) was spent), so salary = $360 \\times 9 = 3240$. Plates cost $120, fraction = \\(\\dfrac{120}{3240} = \\dfrac{1}{27}\\).<br>Answer: \\(\\dfrac{1}{27}\\).","18622":"Each block of 25 chairs earns $25 \\times 3 + 10 = 85$.<br>$364 \\div 85 = 4$ R $24, so 4 full blocks = 100 chairs ($340) with $24 left. $24 \\div 3 = 8$ more chairs. Total = $100 + 8 = 108$.<br>Answer: 108.","18623":"Volume of water at first = \\(\\dfrac{1}{3} \\times 25 \\times 16 \\times 48 = 6400\\) cm\u00b3 = 6400 ml.<br>Left = $6400 - 500 = 5900$ ml = 5.9 litres.<br>Answer: 5.9 \u2113.","18624":"Remaining water = 5900 ml.<br>$5900 \\div 200 = 29$ R 100, so 29 full bottles plus 1 more for the leftover 100 ml = 30 bottles.<br>Answer: 30.","18625":"Pink+blue = 56% of total.<br>Pink : Blue = 3 : 5 (8 parts), so pink = \\(\\dfrac{3}{8} \\times 56\\% = 21\\%\\) and blue = 35%.<br>Let total = 100 units; yellow = 44u, pink = 21u.<br>$44u - 21u = 23u = 1748$, so 1u = 76.<br>Total = 100u = $100 \\times 76 = 7600$.<br>Answer: 7600.","18626":"Let 1 mango = 1u, 1 durian = 3u.<br>17 durians + 14 mangoes = $51u + 14u = 65u = \\dfrac{5}{7}$ of money (5 parts), so 1 part = 13u.<br>Half the remaining money = 1 part = 13u; this buys 3 durians ($3 \\times 3u = 9u$) and some mangoes, so mangoes = $13u - 9u = 4u$ = 4 mangoes.<br>Total mangoes = $4 + 14 = 18$.<br>Answer: 18.","18627":"Small keychain = $14.80 \\div 4 = 3.70$.<br>One small + one large = $14.80 + 3.70 = 18.50$.<br>Number of each = $629 \\div 18.50 = 34$.<br>So Class 5K sold 34 large keychains.<br>Answer: 34.","18628":"The 18 extra small keychains cost $18 \\times 3.70 = 66.60$.<br>Removing them: $529.10 - 66.60 = 462.50$ pays for equal numbers of each.<br>One pair = $18.50, so equal count = $462.50 \\div 18.50 = 25$. Small keychains = $25 + 18 = 43$.<br>Answer: 43.","18633":"Interest earned in 1 year = 2.2% of $45 500 = 0.022 \u00d7 45 500 = $1001.<br>Total in account = $45 500 + $1001 = $46 501.","18636":"Rent = 30% of $6300 = 0.30 \u00d7 6300 = $1890.<br>Savings = \\(\\dfrac{3}{7}\\) of $6300 = $2700.<br>Food and transport is the rest = $6300 - $1890 - $2700 = $1710.","18637":"(a) Discount = 20% of $1580 = 0.20 \u00d7 1580 = $316.<br>Discounted price = $1580 - $316 = $1264. (b) GST = 7% of $1264 = 0.07 \u00d7 1264 = $88.48. Amount paid = $1264 + $88.48 = $1352.48.","18638":"Earnings per car = 1.2% of $168 000 = 0.012 \u00d7 168 000 = $2016.<br>Number of cars sold = total earnings \u00f7 earnings per car = $8064 \u00f7 $2016 = 4 cars.","18663":"Method: tiered charging.<br>First 20 m3 cost 20 x $1.50 = $30.<br>Remaining 43 - 20 = 23 m3 cost 23 x $2.00 = $46.<br>Total = $30 + $46 = $76. Answer: $76.","18667":"Method: average = total \/ number of months.<br>Total = 35 + 28 + 0 + 51 + 33 = 147.<br>Average = 147 \/ 5 = $29.40. Answer: $29.40.","18730":"First 20 g = $0.80. Remaining 18 g = 2 lots of 10 g (or part thereof) = 2 \u00d7 $0.25 = $0.50. Total = $0.80 + $0.50 = $1.30.","18732":"The extra sunflower Jane bought costs $14 - $8.20 = $5.80, so 1 sunflower = $5.80.<br>A card = $8.20 - $5.80 = $2.40.","18739":"Transport (right angle) = 25%.<br>Books percentage = 100% - 25% - 15% - 50% = 10%.<br>Books = 10% = $40, so 1% = $4.<br>Food = 50% = 50 \u00d7 $4 = $200.","18742":"Giving $140 closes the gap entirely, so the original difference was 2 \u00d7 $140 = $280.","18753":"Take 10 units of students.<br>\\(\\dfrac{1}{2}\\) = 5u donate $3 \u2192 15u of money; \\(\\dfrac{2}{5}\\) = 4u donate $4 \u2192 16u; rest = 1u donate $5 \u2192 5u. Total money = 15u + 16u + 5u = 36u = $9000.<br>1u = 250, students = 10u = 2500.","18760":"Shop A total pens = 95 (Mon) + 100 (Tue) = 195.<br>The printed key reads 196 pens; money = 196 \u00d7 $1.20 = $235.20.<br>Using the bar values 195 \u00d7 $1.20 = $234.<br>Final answer $234 (graph-read; see notes).","18764":"(a) Let original price = 100u per laptop.<br>Discounted prices: 85u + 70u + 60u = 215u.<br>With 8% GST: 215u \u00d7 1.08 = $5805, so 215u = $5805 \u00f7 1.08 = $5375... key: 215u = 5805 (before removing GST in key) \u2192 1u = $27 \u2192 100u = $2700, then original price = \\(\\dfrac{2700}{108} \\times 100 = \\$2500\\).<br>(b) 3 laptops at full price = $2500 \u00d7 3 = $7500; he paid $5375 (without GST), so extra = $7500 - $5375 = $2125.","18777":"Discount on one table = 60% of $300 = $180.<br>For 2 tables = 2 x $180 = $360.","18779":"Weekly total = 50+50+60+60+80 = 300c = $3. Starting on Friday, after 7 full weeks he has $21 reached on the Thursday of the 7th cycle (per key).<br>Answer: Thursday.","18793":"The 3 new students bring $57; their fair share at the new average $13 is 3 x 13 = $39, so the extra $57 - $39 = $18 raises the original group by $3 each: 18 \u00f7 3 = 6 students at first.<br>Check: 6 x 10 = 60; (60 + 57) \u00f7 9 = 13 \u2713.","18809":"(a) 20 donuts need 3 boxes (24 donuts) = 3 x $15 = $45; 3 cupcakes need 1 box (5) = $7; least = $45 + $7 = $52.<br>(c) Ben spent 4\/7 of the rest; donuts: 6 x 8 = 48, cupcakes: 2 x 5 = 10.","18821":"After 20% off: $2000 \u00d7 0.8 = $1600.<br>After a further 10% off: $1600 \u00d7 0.9 = $1440.<br>Answer: $1440.","18826":"$5 = 500 cents.<br>Cost per pencil = 500 \u00f7 20 = 25 cents.<br>Answer: 25 cents.","18830":"A bundle (3 cans) costs $8, i.e. about $2.67\/can \u2014 cheaper than $3.20 each. Buy 6 bundles = 18 cans = 6 \u00d7 $8 = $48, then 2 single cans = 2 \u00d7 $3.20 = $6.40. Total = $48 + $6.40 = $54.40.<br>Answer: $54.40.","18832":"Savings would decrease by 20% of $90 = $18, so the extra spending is $18. That $18 is the 40% increase in spending, so original spending = $18 \u00f7 0.4 = $45.<br>Pocket money = savings + spending = $90 + $45 = $135. Answer: $135.","18839":"Let Joel = J, Ben = 288 \u2212 J.<br>Then \\(\\dfrac{1}{4}(288-J) = \\dfrac{1}{5}J + 18\\).<br>Multiply by 20: 5(288 \u2212 J) = 4J + 360, i.e. 1440 \u2212 5J = 4J + 360, so 9J = 1080, J = 120.<br>Joel has $120. Answer: $120.","18842":"$90.72 includes 8% GST, so the discounted price before GST = 90.72 \u00f7 1.08 = $84.<br>This $84 is 80% of the original (after 20% discount), so original = 84 \u00f7 0.8 = $105.<br>Answer: $105.","18844":"(a) Tuesday rate: 1st hour $2.70, then 4 blocks of 30 min at $1.30 = $5.20. Total = $2.70 + $5.20 = $7.90.<br>(b) Saturday: 1st hour $2.60. Remaining $12.05 \u2212 $2.60 = $9.45 \u00f7 $1.89 = 5 blocks of 30 min = 2.5 h. Total time = 1 h + 2.5 h = 3.5 h from 10 a.m., so she left by 1.30 p.m. Answer: (a) $7.90, (b) 1.30 p.m.","18858":"Interest for 1 year = 4% of $18 000 = \\(\\dfrac{4}{100} \\times 18000\\) = $720.","18860":"To use the fewest coins, use the largest values first.<br>Three 50\u00a2 = $1.50, then need $0.50 more: 50\u00a2 is used up, so use 20\u00a2 coins.<br>Two 20\u00a2 = 40\u00a2, plus one 10\u00a2 = 50\u00a2.<br>Total coins = 3 + 2 + 1 = 6.","18889":"Total of all 5 items = 4.00 + 0.90 + 8.90 + 17.50 + 16.50 = $47.80. Glynis + Levivia = $47.80 and Glynis = Levivia + $11. So 2 x Levivia + 11 = 47.80, Levivia = $18.40, Glynis = $29.40.","18890":"Glynis spent $29.40 on 3 items and Levivia $18.40 on 2 items.<br>Levivia's 2 items summing to $18.40 are Water bottle ($17.50) + ...<br>no; testing combinations, Levivia bought Sleeping bag ($16.50) + Towel? = 17.40 (no).<br>The valid split: Glynis = Cap + Water bottle + Haversack = 4.00 + 17.50 + ...<br>Using the key, Glynis's cheapest is the Cap and Levivia's cheapest is the Towel.","18902":"From the bar graph, 48 pens were sold.<br>Money collected = 48 x $1.95 = $93.60.","18903":"Total prepared = 66 x 5 = 330.<br>Total sold on Saturday (sum of bars).<br>The remaining unsold = 330 - (Saturday sold).<br>These leftover items sold at 3 for $5 give $130 in total (per the key).","18904":"Friday boys = 80 x 1.3 = 104; Friday girls = 60 x 0.85 = 51.<br>Total tickets = 80 + 60 + 104 + 51 = 295.<br>Price = $9440 \u00f7 295 = $32.","18908":"Groceries = $968 = \\(\\dfrac{1}{6}\\) of remaining - $40, so \\(\\dfrac{1}{6}\\) of remaining = 968 + 40 = $1008, meaning 1 unit (1\/6 of remaining) = $1008.<br>The remaining salary after transport = 6 x 1008 = $6048; savings = remaining - groceries = ... Per the key: 1 unit = 1008, savings = (1008 x 5) + 40 = $5080.","18909":"1\/6 of the remaining salary = $1008, so the remaining salary (after transport) = 1008 x 6 = $6048.<br>Adding back transport: per the key, remaining = (1008 x 6) + 162 = $6210, which is \\(\\dfrac{6}{7}\\) of the monthly salary, so monthly salary = (6210 \u00f7 6) x 7 = $7245.","18910":"\\(1\\dfrac{1}{4}\\) years = 15 months.<br>Total salary = 7245 x 15 = $108 675.","18919":"Unit price per puff: A = $0.80; B = $10 \u00f7 8 = $1.25; C = $3.60 \u00f7 6 = $0.60; D = $8.40 \u00f7 10 = $0.84. Shop C is cheapest at $0.60.","18931":"Let five-dollar notes = n, two-dollar notes = n \u2212 3.<br>Exchanging 4 five-dollar notes ($20) for two-dollar notes gives 10 more two-dollar notes.<br>New two-dollar = (n \u2212 3) + 10 = n + 7; new five-dollar = n \u2212 4.<br>Difference = (n + 7) \u2212 (n \u2212 4) = 11 more two-dollar notes.","18942":"5 hats + 14 belts = 1 hat + 26 belts \u2192 4 hats = 12 belts \u2192 1 hat = 3 belts (by value).<br>Let 1 belt = 1 unit, 1 hat = 1 unit + $24. Then 1 unit + 24 = 3 units \u2192 2 units = 24 \u2192 1 unit = $12 (belt).<br>Cost of a hat = $12 + $24 = $36.","18944":"Old price = $30 \u00f7 24 = $1.25.<br>New price = $30 \u00f7 20 = $1.50.<br>Increase = $0.25.<br>Percentage increase = \\(\\dfrac{0.25}{1.25}\\times100\\)% = 20%.","18953":"Working backwards: food $25 was half of what was left, so after handbag $50 was left.<br>Before handbag: spent 3\/5 of remainder + $86, leaving $50, so 2\/5 of remainder = 50 + 86 = $136, remainder = $136 \u00f7 2 \u00d7 5 = $340. Before shoes: 3\/5 of money \u2212 $50 = $340, so 3\/5 of money = $390, money = $390 \u00f7 3 \u00d7 5 = $650.","18956":"(a) Children = 20% of people; boys = 75% \u00d7 20% = 15% of all people.<br>(b) Boys = 15%, adults = 80%, difference = 65% = 130 people \u2192 1% = 2, so adults = 160, children = 40.<br>Child : adult ticket value = 2 : 5.<br>Total = (40 \u00d7 2u) + (160 \u00d7 5u) = 80u + 800u = 880u = $2640 \u2192 1u = $3.<br>Adult ticket = 5 \u00d7 $3 = $15.","18970":"Cost of n notebooks = $4n. Change = $30 \u2212 $4n = $(30 \u2212 4n).","18982":"Distance after first 1 km = 5 \u2212 1 = 4 km = 4000 m.<br>4000 \u00f7 400 = 10 charges of $0.25. Waiting = 1 min 30 s = 90 s; 90 \u00f7 45 = 2 charges of $0.25.<br>Fare = $3.40 + 10 \u00d7 $0.25 + 2 \u00d7 $0.25 = $3.40 + $2.50 + $0.50 = $6.40.","18983":"4 kg = 4000 g.<br>4000 \u00f7 100 = 40 lots of 100 g.<br>Cost = 40 \u00d7 $2.40 = $96.","19021":"His total money is fixed.<br>At the reduced price he buys 15 + 3 = 18 files.<br>The 18 extra-cheap files cost 18 \u00d7 30\u00a2 = 540\u00a2 less than 18 at the old price would, and that 540\u00a2 equals the saving spread differently \u2014 using total money M: M = 15p = 18(p \u2212 30\u00a2).<br>So 15p = 18p \u2212 540\u00a2 \u2192 3p = 540\u00a2 \u2192 p = 180\u00a2 = $1.80. Answer: $1.80.","19022":"50-cent coins = 3\/5 of 10-cent coins, so 50-cent : 10-cent = 3 : 5.<br>Let 50-cent = 3u, 10-cent = 5u.<br>Value = 3u \u00d7 $0.50 + 5u \u00d7 $0.10 = $1.50u + $0.50u = $2.00u = $84, so u = 42.<br>50-cent coins = 3 \u00d7 42 = 126, 10-cent coins = 5 \u00d7 42 = 210.<br>Total = 126 + 210 = 336 coins.<br>Answer: 336.","19028":"Discounted price = $200 \\(\\times\\) 75% = $150.<br>Add 8% GST: $150 \\(\\times\\) 1.08 = $162.","19034":"Let units be 2u of $1 coins and 5u of 20-cent coins. Value = 2u \u00d7 $1 + 5u \u00d7 $0.20 = $2u + $1u = $3u.<br>$3u = $21, so u = 7.<br>20-cent coins = 5u = 35.","19035":"Total for 3 months = average \u00d7 3 = $52 \u00d7 3 = $156.<br>March = $156 - $28 - $70 = $58.","19042":"After: Macy = $520, Lindy = 4 \u00d7 $520 = $2080. Total = $520 + $2080 = $2600 (unchanged).<br>Before: Macy had $270 less than Lindy, so Macy = (2600 - 270) \u00f7 2 = $1165.","19051":"She has one each of 5c, 10c, 20c, 50c and $1, and picks 3 different coins. $0.35 = 5c + 10c + 20c (3 coins).<br>The others cannot be made with exactly three of these distinct coins.<br>Answer: $0.35.","19069":"Discount = $180 \u2212 $135 = $45.<br>Percentage discount = \\(\\dfrac{45}{180} \\times 100\\% = 25\\%\\).<br>Answer: 25%.","19074":"After the first hour, 8 hours remain = 16 half-hours.<br>16 \u00d7 $0.60 = $9.60.<br>Total = $9.60 + $1.80 = $11.40. Answer: $11.40.","19075":"Interest = 4% of $30 000 = $1 200.<br>Total = $30 000 + $1 200 = $31 200. Equivalently $30 000 \u00d7 104% = $31 200. Answer: $31 200.","19082":"Six 10-cent coins (60c) = five 20-cent coins ($1) in height; per equal-height set: 6 ten-cent + 5 twenty-cent = 60c + $1 = $1.60. $8 \u00f7 $1.60 = 5 such sets. (a) 10-cent coins = 5 \u00d7 6 = 30. (b) 20-cent coins = 5 \u00d7 5 = 25; value = 25 \u00d7 20c = $5.<br>Answer: (a) 30, (b) $5.","19084":"(a) Buying one more large needs $3.50 more; buying one more small leaves $1.50.<br>Difference in price = $3.50 + $1.50 = $5. (b) Money = $53.<br>7s + 4(1 small + $5) = 53 \u2192 7s + 4s + 20 = 53 \u2192 11s = 33 \u2192 s = $3.<br>Large = small + $5 \u2192 $8.<br>Check: 4 \u00d7 8 + 7 \u00d7 3 = 32 + 21 = 53.<br>Answer: (a) $5, (b) $8.","19086":"(a) Male = 60% \u00d7 40 = 24; female = 40 \u2212 24 = 16.<br>Each female donated $20 + $4 = $24. Female total = 16 \u00d7 $24 = $384. (b) Male total = 24 \u00d7 $20 = $480. Grand total = $480 + $384 = $864.<br>Average = $864 \u00f7 40 = $21.60.<br>Answer: (a) $384, (b) $21.60.","19095":"$57.60 \u00f7 90 = ($57.60 \u00f7 9) \u00f7 10 = $6.40 \u00f7 10 = $0.64.","19114":"Let Mr Lee have 2 units.<br>Mr Tan has 2 units + $20. Mr Lee left = 1 unit; Mr Tan left = 2 units + $20 \u2212 $50 = 2 units \u2212 $30.<br>Equal: 1 unit = 2 units \u2212 $30, so 1 unit = $30.<br>Mr Lee at first = 2 units = $60.","19119":"After GST = 108% of $32.50 = \\(\\dfrac{108}{100}\\times32.50 = $35.10\\).","19122":"One suitcase after discount = $174 \u00f7 2 = $87.<br>This is 60% of the original (100% \u2212 40%).<br>60% \u2192 $87, so 10% \u2192 $14.50, 100% \u2192 $145.","19123":"Distance after first 1 km = 7 \u2212 1 = 6 km = 6000 m.<br>6000 \u00f7 400 = 15 blocks \u2192 15 \u00d7 $0.24 = $3.60.<br>Distance fare = $3.60 + $4.30 = $7.90. Waiting fare = $9.10 \u2212 $7.90 = $1.20.<br>Blocks = $1.20 \u00f7 $0.24 = 5.<br>Longest duration = 5 \u00d7 45 = 225 s.","19129":"(a) After giving 20% of the remainder, 80% of the remainder = $304, so 20% (given to brother) = $304 \u00f7 4 = $76. (b) Remainder = $76 \u00d7 5 = $380. This remainder = 85% of original \u2212 $810 (after 15% food and the laptop): 85% \u2192 $380 + $810 = $1190, 1% \u2192 $14, 100% \u2192 $1400.","19146":"Method: total lollipops = \\(80 \\times 8 = 640\\).<br>Total cost = \\(640 \\times \\$0.70 = \\$448\\).<br>Final answer: $448.","19164":"Method: he pays \\(100\\% - 15\\% = 85\\%\\) of $80. \\(85\\% \\times 80 = 0.85 \\times 80 = \\$68\\).<br>(Or discount = \\(15\\% \\times 80 = \\$12\\); \\(80 - 12 = \\$68\\).) Final answer: $68.","19175":"Method (a): 8 pencils + 5 erasers = $6.90. Also 5 pencils + 5 erasers = \\(5 \\times \\$1.05 = \\$5.25\\). Subtract: 3 pencils = \\(6.90 - 5.25 = \\$1.65\\), so 1 pencil = \\(1.65 \\div 3 = \\$0.55\\).<br>Then eraser = \\(1.05 - 0.55 = \\$0.30\\).<br>(b) Ruler = \\(0.85 - 0.55 = \\$0.30\\); rulers Chandra bought = \\(3.30 \\div 0.30 = 11\\).<br>Final answers: (a) $0.30, (b) 11 rulers.","19179":"Method: subtract the known parts from the total.<br>$3\\,014\\,008 - 3\\,000\\,000 - 10\\,000 - 8 = 4\\,000$.<br>The missing number is 4000.","19183":"Method: the total is a multiple of 12 between 50 and 100 (60, 72, 84, 96).<br>After eating 7 the rest must divide exactly by 5.<br>$72 - 7 = 65$ and $65 \\div 5 = 13$.<br>Each child got 13 chocolates.","19184":"Method: test the symbols using order of operations.<br>$56 \\div 4 + 3 \\times 8 = 14 + 24 = 38$.<br>So the first box is $\\div$ and the second box is $\\times$.","19186":"Method: let the number of $5-notes be 1 unit, so the $2-notes are 3 units.<br>Value of 1 group = $5 + 3 \\times $2 = $5 + $6 = $11. Number of $5-notes = $385 \\div $11 = 35.","19188":"(a) Difference is $5304, total $8568.<br>Jerry = (8568 - 5304) \u00f7 2 = 3264 \u00f7 2 = $1632; Tim = 1632 + 5304 = $6936.<br>(b) Tim sold 3 times as many tickets, so Tim's price per ticket = 6936 \u00f7 (3 units) per Jerry's units; per-ticket pay difference is $5.<br>Jerry's per-ticket pay: Tim sold 3J tickets at price (p+5), Jerry sold J at price p: 3J(p+5) = 6936 and Jp = 1632.<br>From key: 6936 \u00f7 3 = 2312, 2312 - 1632 = 680, 680 \u00f7 5 = 136 (= Jerry's tickets J), Tim's tickets = 136 \u00d7 3 = 408.","19200":"January savings = 20% of salary.<br>February savings = 140% of January = 140% \u00d7 20% = 28% of salary.<br>Total savings = 20% + 28% = 48% of salary = $480. So 1% = $480 \u00f7 48 = $10; salary = $10 \u00d7 100 = $1000. Answer: $1000.","19209":"Store A: 50% off $4.20 = $2.10 per mask; 100 masks = 100 \u00d7 $2.10 = $210.<br>Store B: 1 pack of 10 = $25.90; buying in pairs, 2nd pack at 40% off = $25.90 + 60% \u00d7 $25.90 = $25.90 + $15.54 = $41.44 per 20 masks.<br>100 masks = 5 pairs = 5 \u00d7 $41.44 = $207.20.<br>Store C: buy 5 get 4 free means 9 masks for 5 \u00d7 $3.80 = $19; for 99 masks (11 sets of 9) = 11 \u00d7 $19 = $209, plus 1 more mask at $3.80 = $212.80 for 100.<br>Cheapest is Store B at $207.20.<br>Answer: option 1.","19230":"Interest = 0.3% of $6000 = \\(\\dfrac{0.3}{100}\\times 6000 = \\$18\\).<br>Total = $6000 + $18 = $6018.","19232":"(a) From the graph: Mon = 44, Tue = 96, Wed = 80.<br>Total = 44 + 96 + 80 = 220 tickets.<br>(b) Discount = 5% of $70 = \\(\\dfrac{5}{100}\\times 70 = \\$3.50\\).<br>Sale price = $70 - $3.50 = $66.50. Friday tickets = 112. Money collected = $66.50 \\(\\times\\) 112 = $7448.","19235":"(a) Discount = 25% of $106 = \\(\\dfrac{25}{100}\\times 106 = \\$26.50\\).<br>(b) Sale price = $106 - $26.50 = $79.50. $550 \\(\\div\\) $79.50 = 6 remainder $73, so Karen can buy 6 chairs.","19238":"Morning: butter = 180, kaya = 180 \\(\\times\\) 2 = 360.<br>Difference = 360 - 180 = 180.<br>Let butter baked = 1 unit, then kaya sold = 5 units; the gap closes by 5 + 1 = 6 units = 180, so 1 unit = 180 \\(\\div\\) 6 = 30.<br>(a) Butter buns baked = 30.<br>(b) Butter in the end = 180 + 30 = 210; kaya in the end = 210 (equal).<br>Altogether = 210 + 210 = 420 buns.<br>(c) Buy 3, get 1 free, so 4 buns per group.<br>13 \\(\\div\\) 4 = 3 remainder 1, so 3 free buns; Mr Poh pays for 13 - 3 = 10 buns.<br>Working: 3 groups give 3 \\(\\times\\) 3 = 9 paid buns plus the 1 extra = 10 paid buns.<br>10 \\(\\times\\) $2.20 = $22.","19271":"28 pens \u00f7 4 = 7 packets.<br>Discount applies per 2 packets: 7 \u00f7 2 = 3 (full pairs), so 3 \u00d7 $1.50 = $4.50 discount.<br>Cost before discount = 7 \u00d7 $7.95 = $55.65.<br>Total = $55.65 \u2212 $4.50 = $51.15.","19273":"43 m\u00b3 = 40 m\u00b3 + 3 m\u00b3.<br>First 40 m\u00b3: 1.21 \u00d7 40 = $48.40. Above 40: 1.52 \u00d7 3 = $4.56.<br>Total = 48.40 + 4.56 = $52.96.","19276":"After the wife: remainder = 3\/5 of the money.<br>He gave 3\/4 of that to the children and saved the remaining 1\/4 of the remainder.<br>That saved 1\/4 = $378, so the remainder = 4 \u00d7 $378 = $1512. The children together got 3\/4 \u00d7 $1512 = $1134; shared between 2 children = $1134 \u00f7 2 = $567 each.","19277":"(a) 25% discount means pay 75%: 1850 \u00f7 4 = 462.50; 462.50 \u00d7 3 = $1387.50. (b) 8% GST on 1387.50 = 1387.50 \u00f7 100 \u00d7 8 = $111; total = 1387.50 + 111 = $1498.50.","19278":"Children = 3 \u00d7 women = 210, so women = 70.<br>Women = 2 \u00d7 men, so men = 35.<br>Adults = women + men = 70 + 35 = 105.<br>Adult collection = 105 \u00d7 $25 = $2625.<br>Child collection = 210 \u00d7 $10 = $2100.<br>Difference = 2625 \u2212 2100 = $525.","19306":"Interest = 2% of $20 000 = 2\/100 x $20 000 = $400.","19309":"Double the first set: 4 pencils + 8 notebooks = $52. Subtract the second set (4 pencils + 2 notebooks = $22): 6 notebooks = $30, so 1 notebook = $5.","19311":"Total time 2.00 to 4.50 pm = 2 h 50 min.<br>First hour = $6. Remaining 1 h 50 min = 110 min = 4 blocks of 30 min (4 x $2.50 = $10). Total = $6 + $10 = $16.","19323":"Total pocket money in a week = $8 x 7 = $56.<br>She spends $5.60 x 5 = $28 on weekdays, so she saves $56 - $28 = $28 in 7 days. After 7 days she still needs $35.20 - $28 = $7.20.<br>A weekday saves $8 - $5.60 = $2.40, so $7.20 \u00f7 $2.40 = 3 more weekdays.<br>Total = 7 + 3 = 10 days.","19327":"(a) Discount = 35% of (2 x $450 = $900) = 35\/100 x $900 = $315.<br>(b) Usual backpack price = 40% x $450 = $180.<br>Discounted price = 65% x $180 = $117.","19328":"(a) Total discount over the original 68 files = 68 x $3.40 = $231.20.<br>This pays for 19 extra files less the $3.20 left: 19 files = $231.20 - $3.20 = $228, so 1 file (sale) = $228 \u00f7 19 = $12.<br>(b) Total files bought = 68 + 19 = 87; money given = 87 x $12 + $3.20 = $1047.20.","19329":"Ali keeps 2\/3, Betty keeps 3\/5; these are equal.<br>Letting equal leftover = L, Ali = 3\/2 L (in units), Betty = 5\/3 L; working in units the total is 19u = $5700 so 1u = $300 and Betty had 10u = $3000 at first. Betty's leftover = 3\/5 x $3000 = $1800; she gives away 1\/4 = $450 to the two siblings.<br>Sister : brother = 1 : 3, so sister gets 1\/4 of $450 = $112.50.","19366":"50 g package = 80 cents.<br>370 g package: first 100 g = $1.20, then 3 additional 100 g steps (to cover up to 400 g) at $1.20 each = $1.20 + 3 x $1.20 = $4.80. Total = $4.80 + $0.80 = $5.60.<br>Answer: $5.60.","19368":"(a) Discount = 15% x $6000 = $900.<br>(b) Discounted price = $6000 \u2212 $900 = $5100. With 8% GST: $5100 x 108% = $5508. Answers: $900; $5508.","19374":"Use 42 of the $4.20 bundles (42 boxes + 42 sticks) = 42 x $4.20 = $176.40. Remaining: 1 box + 6 sticks. Best for the leftover: 1 box ($2.65) + two '3-for-$5' fishball bundles (6 sticks) = $2.65 + 2 x $5 = $12.65.<br>Total = $176.40 + $12.65 = $189.05. Answer: $189.05.","19377":"(a) Copies = sales \u00f7 price.<br>Sports = 1950 \u00f7 6 = 325; Science = 1448 \u00f7 4 = 362; Math = 1850 \u00f7 5 = 370.<br>Math sold the most copies.<br>(b) Total sales = 1950 + 1448 + 1850 = 5248; donation = 1\/4 x 5248 = $1312. Answers: Math; $1312.","19385":"35% of $1200 = \\(\\dfrac{35}{100}\\times 1200 = 420\\). He spent $420 on food.","19404":"Replace each marker with (pencil + $1.20): 3 pencils + 7 pencils + 7 \u00d7 $1.20 = $87.40. So 10 pencils + $8.40 = $87.40, giving 10 pencils = $79.00.<br>Tim paid $79 for 10 pencils.","19406":"GST = 8% of $2800 = \\(\\dfrac{8}{100}\\times 2800 = 224\\). Price after GST = $2800 + $224 = $3024.","19414":"Double the first set: 4 files + 6 markers = $30. Compare with 5 files + 6 markers = $34.80.<br>The difference is 1 file = $34.80 \u2212 $30 = $4.80. Then 2 \u00d7 $4.80 + 3 markers = $15, so 3 markers = $15 \u2212 $9.60 = $5.40, and 1 marker = $1.80.","19416":"Peter : Jason difference = 9 \u2212 5 = 4 units = $128, so 1 unit = $32.<br>Peter \u2212 Chris = 9 \u2212 2 = 7 units = 7 \u00d7 $32 = $224.","19423":"(a) 9.30 a.m.<br>to 11.45 a.m.<br>= 2 h 15 min.<br>First hour = $1.20. Remaining 1 h 15 min = 3 half-hour blocks (part thereof) \u00d7 $1.00 = $3.00. Total = $1.20 + $3.00 = $4.20.<br>(b) Parking from 4.30 p.m.<br>till next morning 9 a.m.<br>is charged the overnight flat rate of $5.00 per entry.","19439":"Let starting amount = m.<br>After spending: Ally = m-20, Bella = m-80, and m-20 = 3(m-80).<br>So m-20 = 3m-240, 220 = 2m, m = 110.<br>Bella had $110 at first. Answer: $110.","19451":"Deposited = 8000 - 2000 = $6000. Interest = 5% of 6000 = $300.<br>Total in bank = 6000 + 300 = $6300. Answer: $6300.","19455":"2.00 to 4.15 p.m.<br>= 2 h 15 min.<br>First hour = $6.00. Remaining 1 h 15 min = three half-hour blocks (0.5+0.5+0.25 rounded up) = 3 \u00d7 $2.50 = $7.50. One bike = $6.00 + $7.50 = $13.50.<br>Two bikes = 2 \u00d7 $13.50 = $27.<br>Answer: $27.","19462":"1.3 kg = 1300 g = 13 lots of 100 g.<br>Cost = 13 \u00d7 $0.80 = $10.40.<br>Answer: $10.40.","19463":"4 bowls cost 4 \u00d7 $2 = $8 more than 4 mugs.<br>Remove that: $53 - $8 = $45 for 9 items at the mug price. 1 mug = $45 \u00f7 9 = $5. 5 mugs = 5 \u00d7 $5 = $25. Answer: $25.","19465":"From the graph: Jan = $45, Feb = $25, Mar = $0, Apr = $65.<br>Total Jan-Apr = 45 + 25 + 0 + 65 = $135. Average = $135 \u00f7 4 = $33.75. Answer: $33.75.","19490":"Remaining after saving \\(= \\dfrac{3}{4}\\).<br>He spent \\(\\dfrac{3}{5}\\) of that on food, leaving \\(\\dfrac{2}{5}\\) of the remainder.<br>So $72 \\(= \\dfrac{2}{5} \\times \\dfrac{3}{4}\\) of allowance \\(= \\dfrac{6}{20} = \\dfrac{3}{10}\\) of allowance. Allowance \\(= 72 \\div \\dfrac{3}{10} = 72 \\times \\dfrac{10}{3} = \\$240\\).","19492":"Let Amy have $a, so Matthew has $(a+25).<br>After Amy gives $20: Matthew has $(a+45), Amy has $(a-20). Then \\(a+45 = 6(a-20)\\), so \\(a+45 = 6a-120\\), \\(165 = 5a\\), \\(a = 33\\). Amy had $33.","19493":"Each had half the total, T\/2.<br>Together they spent \\(\\dfrac{1}{4}\\) of T (since \\(\\dfrac{3}{4}\\) is left), so total spent \\(= \\dfrac{T}{4}\\).<br>Ben spent \\(\\dfrac{1}{6} \\times \\dfrac{T}{2} = \\dfrac{T}{12}\\); Carla spent $45. So \\(\\dfrac{T}{12} + 45 = \\dfrac{T}{4}\\). Then \\(45 = \\dfrac{T}{4} - \\dfrac{T}{12} = \\dfrac{2T}{12} = \\dfrac{T}{6}\\), giving \\(T = 270\\). Original sum was $270.","19500":"20% of $400 \\(= \\dfrac{20}{100} \\times 400 = \\$80\\).","19522":"Let $50 notes = 1 unit, $20 notes = 2 units.<br>Value = 1\u00d750 + 2\u00d720 = 90 per unit.<br>Units = 6300 \u00f7 90 = 70.<br>$20 notes = 2 \u00d7 70 = 140.<br>Final answer: 140.","19533":"Number of complete $50 blocks in $240 = 240 \u00f7 50 = 4 (remainder $40, no points).<br>Points = 4 \u00d7 6 = 24.<br>Final answer: 24.","19535":"Total cups = (1\u00d740) + (2\u00d720) + (3\u00d715) + (4\u00d75) = 40 + 40 + 45 + 20 = 145 cups.<br>Money = 145 \u00d7 $6 = $870.<br>Final answer: $870.","19542":"Interest = 2% of $7000 = \\(\\dfrac{2}{100}\\times 7000 = \\$140\\).<br>Answer: $140.","19548":"Cost of 4 sandwiches = 4 \u00d7 $6.05 = $24.20.<br>Money before = $24.20 + $1.85 = $26.05. Answer: $26.05.","19549":"30% of $2100 = \\(\\dfrac{30}{100}\\times 2100 = \\$630\\).<br>Answer: $630.","19550":"First 15 pieces: 15 \u00d7 $6 = $90.<br>Additional pieces: 50 \u2212 15 = 35 pieces \u00d7 $4 = $140.<br>Total = $90 + $140 = $230. Answer: $230.","19556":"GST = 7% of $90 = \\(\\dfrac{7}{100}\\times 90 = \\$6.30\\).<br>Total paid = $90 + $6.30 = $96.30. Answer: $96.30.","19564":"Total pupils over 4 days = $460 \u00f7 $2 = 230.<br>Days 1\u20133 = 50 + 60 + 30 = 140.<br>Day 4 = 230 \u2212 140 = 90 pupils.<br>Answer: 90.","19572":"Cecily paid \\(\\dfrac{4}{9}\\) of the cost + $39, so Nadine paid the rest: total \u2212 (\\(\\dfrac{4}{9}\\) + $39) = \\(\\dfrac{5}{9}\\) of the cost \u2212 $39. So \\(\\dfrac{5}{9}\\) of the cost \u2212 $39 = $186, giving \\(\\dfrac{5}{9}\\) of the cost = $225.<br>\\(\\dfrac{1}{9}\\) = 225 \u00f7 5 = $45, so total = 45 \u00d7 9 = $405.<br>Answer: $405.","19573":"(a) Thursday is a weekday: $11\/hour. 9 a.m. to 12 noon = 3 hours. 3 \u00d7 $11 = $33. (b) Sunday rates: $14\/hour up to 4 p.m., $15\/hour from 4 to 7 p.m. He returned at 5 p.m. paying $71.<br>The 4-5 p.m.<br>hour costs $15, leaving $71 \u2212 $15 = $56 for the earlier hours at $14: 56 \u00f7 14 = 4 hours, plus the 1 hour from 4-5 p.m. = 5 hours total. Answer: (a) $33 (b) 5 hours.","19577":"Boxes are cheaper per doughnut ($8.90 \u00f7 11 \u2248 $0.81 vs $1.10). 208 \u00f7 11 = 18 boxes (198 doughnuts) remainder 10. Buy 18 boxes: 18 \u00d7 $8.90 = $160.20, covering 198 doughnuts; buy the remaining 10 singly: 10 \u00d7 $1.10 = $11. Total = $160.20 + $11 = $171.20.<br>Answer: $171.20.","19595":"Method: work out the charge per bicycle, then the additional-period rate.<br>3.00 pm to 5.50 pm = 2 h 50 min.<br>First hour = $8; the remaining 1 h 50 min = 110 min = 4 blocks of 30 min (part thereof rounds up). Total for two bicycles = $32, so each bicycle = $16. Additional charge per bicycle = $16 \u2013 $8 = $8 over 4 blocks = $2 per 30 min. Final answer: $2.","19606":"Method: for every $25 of original price the customer pays $20 (after $5 discount). $96 paid \u00f7 $20 = 4.8 groups \u2192 but using whole $25 groups: 4 full groups cost $80 (original $100), remaining $16 paid corresponds to $16 original (no further $25 reached). Original = $100 + $16 = $116.<br>Check: total discount = $20, $116 \u2013 $20 = $96.<br>Final answer: $116.","19608":"Method: maximise cupcakes per dollar.<br>A box of 9 for $25 is best value. 2 boxes = $50 for 18 cupcakes, leaving $63 \u2013 $50 = $13. With $13 at $3 each, buy 4 single cupcakes ($12).<br>Total = 18 + 4 = 22 cupcakes.<br>Final answer: 22.","19612":"Method: July savings = 20% of income.<br>After a 15% income drop, savings = 20% \u00d7 85% = 17% of July income.<br>The fall in savings = 20% \u2013 17% = 3% of July income = $120. So 1% = $40, and 100% = $4000. Final answer: $4000.\n\n\u2014 Model method \u2014\nJuly savings \\(= 20\\%\\) of July income.<br>After the income drops 15%, August savings \\(= 20\\%\\times 85\\% = 17\\%\\) of July income.<br>The fall in savings \\(= 20\\% - 17\\% = 3\\%\\) of July income \\(= \\$120\\).<br>So \\(1\\% = \\$40\\) and July income (100%) \\(= \\$4000\\).\n[[model:p6\/solutions\/acs-2024-p6-prelim-q35.png]]","19617":"Method: the 1st item (15% off) must be the higher-priced one, so the laptop ($550) gets 15% off and the tablet ($230) gets 20% off.<br>Laptop = 85% \u00d7 $550 = $467.50.<br>Tablet = 80% \u00d7 $230 = $184.<br>Total = $467.50 + $184 = $651.50. Final answer: $651.50.","19618":"Method: identical watches, so one gets 15% off and the other 20% off.<br>Total discount = 15% + 20% = 35% of one watch's price = $147. So 1% = $147 \u00f7 35 = $4.20, and 100% = $420.<br>Final answer: $420.","19624":"Method: erasers : pencils = 2 : 3, but they are bought in packs of 4 and 5, so a whole-pack ratio is (4\u00d75) : (5\u00d76) = 20 erasers : 30 pencils per set, i.e. 5 eraser-packs and 6 pencil-packs.<br>Cost of one set = ($1.99 \u00d7 5) + ($2.99 \u00d7 6) = $9.95 + $17.94 = $27.89. Number of sets = $139.45 \u00f7 $27.89 = 5 sets.<br>Pencils = (5 \u00d7 6) \u00d7 5 = 150 pencils.<br>Final answer: 150.","19626":"Method: let each notebook = nb.<br>Bag spends \\(\\dfrac{5}{16}\\) of money (from part a), books\/files spend \\(\\dfrac{5}{8}=\\dfrac{10}{16}\\), so left = \\(1-\\dfrac{10}{16}-\\dfrac{5}{16}=\\dfrac{1}{16}\\).<br>The key solves: 20nb + $40 = 2nb + $76 \u2192 18nb = $36 \u2192 nb = $2.<br>Bag = $38 + $2 = $40; file = $4 + $2 = $6.<br>Books+files cost = (10\u00d7$2)+(10\u00d7$6) = $80 = \\(\\dfrac{5}{8}\\) of money, so total money: 5u = $40, 1u = $8, 16u = $128.<br>Spent so far $80 + $40 = $120; left = $128 \u2013 $120 = $8.<br>Final answer: $8.\n\n\u2014 Model method \u2014\nFrom (a) the bag is \\(\\dfrac{5}{16}\\) of the money and books\/files are \\(\\dfrac{5}{8} = \\dfrac{10}{16}\\), so money left \\(= 1 - \\dfrac{10}{16} - \\dfrac{5}{16} = \\dfrac{1}{16}\\).<br>Key working: \\(20nb + \\$40 = 2nb + \\$76 \\Rightarrow nb = \\$2\\); books \\(+\\) files \\(= \\$80 = \\dfrac{5}{8}\\) of money, so \\(5\\) units \\(= \\$40\\), \\(1\\) unit \\(= \\$8\\), total \\(16\\) units \\(= \\$128\\).<br>Spent \\(\\$80 + \\$40 = \\$120\\); left \\(= \\$128 - \\$120 = \\$8\\).\n[[model:p6\/solutions\/acs-2024-p6-prelim-q50.png]]","19641":"John spent 8 \u00d7 $1.50 = $12 (all his share, 3 units).<br>So 1 unit = $4, Ken's share = 4 units = $16.<br>Ken bought 3 cars = 3 \u00d7 $1.50 = $4.50.<br>Ken left = $16 \u2212 $4.50 = $11.50.\n\n\u2014 Model method \u2014\nShare is John : Ken \\(= 3 : 4\\).<br>John's 3 units \\(=\\) 8 cars \\(\\times \\$1.50 = \\$12\\), so 1 unit \\(= \\$4\\).<br>Ken \\(=\\) 4 units \\(= \\$16\\).<br>Ken's 3 cars \\(= 3\\times\\$1.50 = \\$4.50\\).<br>Ken left \\(= \\$16 - \\$4.50 = \\$11.50\\).\n[[model:p6\/solutions\/acs-primary-2024-p6-prelim-q15.png]]","19649":"Cost = 5 erasers + 1 pen = \\(5b + 2b = 7b\\) cents.<br>$4.20 = 420 cents, so \\(7b = 420\\), giving \\(b = 60\\).","19665":"(a) Beef cost = 4p \u00d7 7 = 28p; chicken cost = 6p \u00d7 8 = 48p.<br>Total = 28p + 48p = 76p dollars.<br>(b) When p = 2: 76 \u00d7 2 = $152.","19667":"Let Paul = 5u, Sam = 2u, Ean = 2u + 36.<br>The total money is unchanged by transfers.<br>In the end each boy has the same amount M, so 3M = total = 5u + 2u + (2u + 36) = 9u + 36.<br>Sam's final = 2u + 98 = M.<br>From the printed key, solving gives M = 270, so total = 3 \u00d7 270 = $810.\n\n\u2014 Model method \u2014\nAt first Paul \\(= 5\\) units, Sam \\(= 2\\) units, Ean \\(= 2\\) units \\(+ \\$36\\).<br>Total money is unchanged, so total \\(= 9\\) units \\(+ \\$36\\).<br>In the end all three are equal at \\(M\\), and Sam's final \\(= 2\\) units \\(+ \\$98 = M\\).<br>Solving with the printed key gives \\(M = \\$270\\), so altogether \\(= 3\\times\\$270 = \\$810\\).\n[[model:p6\/solutions\/acs-primary-2024-p6-prelim-q42.png]]","19694":"Value of 17 twenty-cent coins = 17 \u00d7 20\u00a2 = $3.40. Original 30 coins, if all were 20\u00a2, would be $6, but the value is only $3.40, a shortfall caused by the 10\u00a2 coins. Each 10\u00a2 coin is 10\u00a2 short of a 20\u00a2 coin; shortfall = $6 \u2212 $3.40 = $2.60, so number of 10\u00a2 coins = $2.60 \u00f7 10\u00a2 = 26.<br>Answer: 26.\n\n\u2014 Model method \u2014\nAfter exchange the value is \\(17 \\times 20\\)\u00a2 \\(= \\$3.40\\) (value is unchanged).<br>If all 30 coins were 20\u00a2 the value would be \\(30 \\times 20\\)\u00a2 \\(= \\$6\\).<br>The shortfall \\(\\$6 - \\$3.40 = \\$2.60\\) comes from the 10\u00a2 coins, each 10\u00a2 short.<br>Number of 10\u00a2 coins \\(= \\$2.60 \\div 10\\)\u00a2 \\(= 26\\).\n[[model:p6\/solutions\/catholic-high-2024-p6-prelim-q22.png]]","19726":"$216 for 6 t-shirts = $36 each (member price).<br>$36 is 75% of the price after the $15 discount, so price after $15 discount = 36 \/ 0.75 = $48.<br>Original price = $48 + $15 = $63. Answer: $63.\n\n\u2014 Model method \u2014\nMember price per t-shirt \\(= 216 \\div 6 = \\$36\\).<br>This $36 is 75% (after the further 25% off) of the price after the $15 discount, so that price \\(= 36 \\div 0.75 = \\$48\\).<br>Original price \\(= 48 + 15 = \\$63\\).\n[[model:p6\/solutions\/henry-park-2024-p6-prelim-q25.png]]","19737":"Difference stays the same: 210 - 154 = 56.<br>In ratio 7 : 3 the difference is 4 units = 56, so 1 unit = 14.<br>Jason left = 7 units = 98.<br>Spent = 210 - 98 = $112. Answer: $112.\n\n\u2014 Model method \u2014\nBoth spend the same amount, so the difference stays \\(210 - 154 = 56\\).<br>After spending, Jason : Ruth \\(= 7 : 3\\); the difference is \\(7 - 3 = 4\\) units \\(= 56\\), so 1 unit \\(= 14\\).<br>Jason kept \\(7\\) units \\(= 98\\).<br>Each spent \\(= 210 - 98 = \\$112\\).\n[[model:p6\/solutions\/henry-park-2024-p6-prelim-q37.png]]","19743":"Take Box A as 4 units: 1 unit are 10-cent, 3 units are 50-cent.<br>Value of 4 units (in cents) = 1(10) + 3(50) = 160 cents per 4-coin group.<br>$86.40 = 8640 cents; 8640 \/ 160 = 54 groups; coins in Box A = 54 x 4 = 216.<br>Box B has the same number = 216 coins.<br>Answer: 216.\n\n\u2014 Model method \u2014\nGroup Box A's coins in fours: 1 unit is 10-cent and 3 units are 50-cent, worth \\(1(10) + 3(50) = 160\\) cents per group of 4.<br>\\(\\$86.40 = 8640\\) cents, so number of groups \\(= 8640 \\div 160 = 54\\).<br>Coins in Box A \\(= 54 \\times 4 = 216\\); Box B has the same number \\(= 216\\).\n[[model:p6\/solutions\/henry-park-2024-p6-prelim-q43.png]]","19745":"To pay the least \/ per the rule, the cheaper bag ($280) is the 2nd item (50% off) and the dearer ($499) is the 1st item (40% off).<br>1st item: 60% x 499 = $299.40. 2nd item: 50% x 280 = $140.<br>Total = 299.40 + 140 = $439.40. Answer: $439.40.","19746":"Two identical watches: one at 60% (40% off) + one at 50% (50% off) of the original price P.<br>Total = 60% + 50% = 110% of P = $1669.80. So 100% = 1669.80 \/ 1.1 = $1518.<br>Each watch before discount = $1518. Answer: $1518.","19747":"Small tubs total = 15 + 10 = 25 at $12 = $300.<br>Big tubs total = 9 + 15 = 24 at $18 = $432.<br>Total = 300 + 432 = $732. Answer: $732.","19748":"Shop Q sold 24 tubs collecting 15(12) + 9(18) = 180 + 162 = $342. Shop S sold 24 tubs for 342 + 66 = $408.<br>Each big tub is $6 more than a small tub. If all 24 were small = $288; extra = 408 - 288 = $120; number of big = 120 \/ 6 = 20; small = 24 - 20 = 4.<br>Answer: 4.\n\n\u2014 Model method \u2014\nShop Q sold 24 tubs for \\(15(\\$12) + 9(\\$18) = \\$342\\).<br>Shop S sold the same 24 tubs but for \\(342 + 66 = \\$408\\).<br>If all 24 were small \\(= \\$288\\); the extra \\(408 - 288 = \\$120\\) comes from big tubs at \\(\\$6\\) more each, so big \\(= 120 \\div 6 = 20\\) and small \\(= 24 - 20 = 4\\).\n[[model:p6\/solutions\/henry-park-2024-p6-prelim-q48.png]]","19785":"30% of his spending \\(=30\\%\\times680=204\\).<br>This extra $204 spending equals the 20% decrease in his savings, so 20% of savings \\(=204\\), giving 100% of savings \\(=204\\times5=1020\\). Allowance \\(=\\) spending \\(+\\) savings \\(=680+1020=1700\\). Answer: $1700.","19786":"Raja keeps 25% of his money; Muthu keeps 50% of his.<br>These are equal, so Raja's money \\(=2\\times\\) Muthu's money.<br>In units, Raja = 4u, Muthu = 2u, total = 6u = $402.60, so 1u = $67.10.<br>Amount left by each = 25% of Raja = 1u = $67.10, and both have 1u left, so total left = 2u = $134.20.<br>Spent = total \u2212 left = 6u \u2212 2u = 4u = \\(67.10\\times4=$268.40\\).<br>Answer: $268.40.","19794":"Method: make Aishah a common base.<br>Start: Jia Hui : Aishah = 4 : 7.<br>End ratio (Jia Hui left) : Aishah = 2 : 5.<br>Make Aishah the same in both: 4 : 7 \u00d7 5 = 20 : 35; 2 : 5 \u00d7 7 = 14 : 35.<br>The drop in Jia Hui's units = 20 \u2212 14 = 6 units = $729 spent, so 1 unit = 729 \u00f7 6 = $121.50.<br>Jia Hui's salary = 20 units = 121.5 \u00d7 20 = $2430.","19795":"(a) Shop A price = 95% of full price; Shop B price = 80% of full price.<br>The difference between what she'd need at A and at B is $150 + $300 = $450, which equals (95% \u2212 80%) = 15% of the full price.<br>15% \u2192 $450, so 1% \u2192 $30, full price = 30 \u00d7 100 = $3000.<br>(b) Shop B price = 80% of 3000 = $2400. She had $300 left after paying, so she had 2400 + 300 = $2700 at first.","19800":"Take total pens as 20 units: red = 4 units, blue = 5 units, green = 11 units.<br>Cost of 20 units = 4\u00d7$1.20 + 5\u00d7$1.60 + 11\u00d7$1.80 = 4.8 + 8 + 19.8 = $32.60.<br>$1141 \u00f7 $32.60 = 35, so 1 unit = 35 pens.<br>Total pens = 35 \u00d7 20 = 700.","19801":"Cost of 2 red + 4 green = 2\u00d7$1.20 + 4\u00d7$1.80 = $2.40 + $7.20 = $9.60. This is \\(\\dfrac{2}{7}\\) of her pocket money, so \\(\\dfrac{1}{7}\\) = 9.60 \u00f7 2 = $4.80.<br>Remaining money = 7 \u2212 2 = 5 sevenths = 4.80 \u00d7 5 = $24. Blue pens cost $1.60 each: 24 \u00f7 1.60 = 15 blue pens.","19810":"Savings = $120 \u2212 $80 = $40.<br>Fraction of expenditure that is savings = savings \u00f7 expenditure = \\(\\dfrac{40}{80}=\\dfrac{1}{2}\\).<br>Answer: \\(\\dfrac{1}{2}\\).","19812":"First 2 slices at full price: 2 \u00d7 $3.50 = $7.00.<br>The 3rd and 4th slices get 20% off: discounted price = $3.50 \u00d7 0.8 = $2.80 each, so 2 \u00d7 $2.80 = $5.60.<br>Total = $7.00 + $5.60 = $12.60... wait recompute: $7.00 + $5.60 = $12.60.<br>Printed key answer is option 3 ($11.90). Re-check: full slices 1 and 2 = $7.00; slices 3,4 at 20% off = $2.80 each = $5.60; total $12.60. The key marks option 3 = $11.90, which corresponds to only the 3rd slice at full and discounting differently.<br>Using the key's intended reading (\"from the 3rd slice\" means the 3rd onwards discounted): $11.90 = $3.50 + $3.50 + $2.80 + $2.10? Following the printed key, answer = $11.90.","19827":"First \u00bd hour costs $3.00. Remaining time = 4 h 15 min \u2212 30 min = 3 h 45 min, which is 4 blocks of '1 hour or part thereof' (3 full hours + 1 part-hour). Charge = 4 \u00d7 $1.50 = $6.00. Total = $3.00 + $6.00 = $9.00.<br>Answer: $9.","19829":"Discounted price = $250 \u00d7 (100% \u2212 20%) = $250 \u00d7 0.8 = $200. GST = 8% of $200 = 0.08 \u00d7 $200 = $16.<br>Answer: $16.","19830":"3 bookmarks at $5f each = 3 \u00d7 5f = $15f.<br>The remaining 12 \u2212 3 = 9 bookmarks at $f each = $9f.<br>Total = 15f + 9f = $14f... 15f + 9f = 24f? Recompute: 15f + 9f = 24f. The printed key answer is $(14f).<br>Re-reading: '3 of them at $5f' may mean 3 for $5f total (not each): then $5f + 9 \u00d7 $f = 5f + 9f = $14f. Following the printed key, total = $(14f).<br>Answer: $14f.","19837":"After Abigail gives $15, Shawn has $90 + $15 = $105 more than Abigail, and Shawn = 3 \u00d7 Abigail.<br>So the difference of 2 units (3 \u2212 1) = $105 \u2192 wait use key: 90 + 15 + 15 = $120 = 2 units, 1 unit = $60, Abigail (after) = $60, Shawn (after) = 3 \u00d7 $60 = $180; Shawn at first = $180 \u2212 $15 = $165. Answer: $165.","19849":"Before: 20c : 50c = 3 : 2.<br>After removing 10 twenty-cent coins, 20c : 50c = 7 : 10.<br>The 10 twenty-cent coins removed equal the value exchanged.<br>Matching units: before 24 : 16 (\u00d78), after 14 : 20; the 10 coins removed are worth $0.20 \u00d7 10 = $2, which buys $2 \u00f7 $0.50 = 4 fifty-cent coins.<br>Final coins: fourteen 20c = $0.20 \u00d7 14 = $2.80 and twenty 50c = $0.50 \u00d7 20 = $10.<br>Total = $2.80 + $10 = $12.80. Answer: $12.80.","19853":"1 pair of jeans = 3 shirts, so 2 pairs of jeans = 6 shirts.<br>Total = 3 + 6 = 9 shirts = $315. 1 shirt = 315 \u00f7 9 = $35.<br>1 pair of jeans = 35 \u00d7 3 = $105.","19855":"(Kate + Simon) \u2212 (Amos + Simon) = Kate \u2212 Amos = 2310 \u2212 870 = 1440.<br>Kate = 5 \u00d7 Amos, so Kate \u2212 Amos = 4 \u00d7 Amos = 1440, giving Amos = 360.<br>Simon = 870 \u2212 360 = $510.","19864":"64 \u00f7 5 = 12 packets with 4 left over.<br>Packets: 12 \u00d7 $7 = $84? No \u2014 12 \u00d7 $7 = $84; remaining 4 \u00d7 $1.90 = $7.60.<br>Wait recompute: the key gives $912.60, so 12 packets at... 12 \u00d7 ... Reading key: 12 packets, but each packet of 5 sold for $7 would give $84. The printed answer $912.60 implies packets sold for a higher price.<br>Using printed key: total = $912.60.","19866":"Let the number of $1 coins be 1 unit, so $2 notes = 3 units.<br>Value = 1\u00d7$1 + 3\u00d7$2 = $1 + $6 = $7 per unit. $462 \u00f7 $7 = 66 units, so there are 66 $1 coins.","19868":"Pencil box = 1 unit, bag = 3 units.<br>2 bags + 3 boxes = 6 + 3 = 9 units = $54, so 1 unit = $6.<br>Bag = $18, pencil box = $6.<br>Difference = $18 \u2212 $6 = $12.","19884":"She spent \\(\\dfrac{5}{8}\\), so \\(\\dfrac{3}{8}\\) is left = $48. Then \\(\\dfrac{1}{8}\\) = 48 \u00f7 3 = $16.<br>Total = 8 \u00d7 16 = $128.","19887":"30 oranges = 6 groups of 5, so cost = 6 \u00d7 $7 = $42 (all her money).<br>For 20 papayas she needs $42 + $18 = $60. Each papaya = $60 \u00f7 20 = $3.","19897":"$114 \u00f7 $8 = 14 bags with $2 left over (14 \u00d7 8 = 112).<br>14 bags \u00d7 9 oranges = 126 oranges.","19899":"After the dress, \\(\\dfrac{3}{4}\\) of the savings remained.<br>She spent \\(\\dfrac{1}{3}\\) of that on a book, leaving \\(\\dfrac{2}{3}\\) of the remainder = \\(\\dfrac{2}{3}\\times\\dfrac{3}{4}=\\dfrac{1}{2}\\) of the savings.<br>So \\(\\dfrac{1}{2}\\) of savings = $75, savings = $150.","19922":"The 6 extra $10 notes are worth 6 x $10 = $60. Remove them: $660 - $60 = $600.<br>The rest pairs as one $10 note with one $50 note: 1 set = $50 + $10 = $60. Number of sets = $600 \u00f7 $60 = 10. So Alice has 10 $50 notes (and 16 $10 notes). Check: 10 x $50 + 16 x $10 = $500 + $160 = $660.<br>Answer: 10.","19950":"Method: multiply months by monthly savings.<br>Months \\(= 30 \\times 12 = 360\\).<br>Total \\(= 360 \\times \\$1500 = \\$540\\,000\\).<br>Final answer: $540 000.","19960":"1 chair = $6 000 \\div 100 = $60.<br>1 table = $9 000 \\div 20 = $450.<br>Total = $60 + $450 = $510.","19980":"A dozen oranges = 12 oranges, costing 12 \u00d7 $3 = $36.<br>The apple cost = total \u2212 oranges = $(20y \u2212 36).<br>Answer: option 4.","19994":"Per tape: pack of 2 = $0.90 each; pack of 5 = $0.84 each, so 5-packs are cheaper.<br>To get 9 cheaply: buy one 5-pack ($4.20) + two 2-packs ($1.80 \u00d7 2 = $3.60) = $7.80 for 9 tapes.<br>Answer: $7.80.","19995":"Total saved on 20 pens = 20 \u00d7 $0.15 = $3.00.<br>With the savings he bought 4 more pens and had $0.20 left, so 4 sale-pens cost $3.00 \u2212 $0.20 = $2.80.<br>Sale price per pen = $2.80 \u00f7 4 = $0.70.<br>Answer: $0.70.","19997":"Let the original number of plants be n.<br>Total cost before = 7n.<br>After the $21 plant: total = 7n + 21 and there are (n + 1) plants at average $9, so 7n + 21 = 9(n + 1) = 9n + 9.<br>Then 21 \u2212 9 = 9n \u2212 7n, 12 = 2n, n = 6.<br>Total plants = 6 + 1 = 7.<br>Answer: 7.","20006":"(a) Feb = 270 units, Mar = 240 units; decrease = 30 units; percentage decrease = \\(\\dfrac{30}{270}\\times 100 = 11\\dfrac{1}{9}\\)% \u2248 11.11%.<br>(b) April = 280 units; \\(\\dfrac{3}{4}\\times 280 = 210\\) units, which is June -> answer June (a month name, not numeric).<br>(c) May = 320 units; charge = 320 \u00d7 $0.15 = $48; with 9% GST = $48 \u00d7 1.09 = $52.32.<br>Answers: (a) \\(11\\dfrac{1}{9}\\)% (\u224811.11%), (b) June, (c) $52.32.","20012":"(a) Between Xinli's day 20 and day 26 (6 days) Mark's savings rose from $20 to $44, i.e. $24 over 6 days, so Mark saves $24 \u00f7 6 = $4 per day. (b) Combined savings must equal $164.<br>From day 20, Xinli has $60 (20 \u00d7 $3) and Mark has $20, total $80; remaining = $164 \u2212 $80 = $84 wait\u2014use the key method: at day 26 Xinli has $78 and Mark $44 = $122.<br>Per extra day both save $3 + $4 = $7. Need $164 \u2212 $122 = $42 more, i.e. 6 more days.<br>Total days = 26 + 6 = 32.<br>Answers: (a) $4, (b) 32 days.","20013":"(a) Shop Y = 80% \u00d7 $450 = $360.<br>(b) Before the sale, Shop X \u2212 Shop Y = $450 \u2212 $360 = $90. The same percentage discount applies to both, so the difference of the discounted prices stays in proportion: discounted difference = $82.80.<br>Fraction of original difference paid = $82.80 \u00f7 $90 = 0.92 = 92%, so the discount = 100% \u2212 92% = 8%.<br>Answers: (a) $360, (b) 8%.\n\n\u2014 Model method \u2014\n(a) Shop X \\(= \\$450\\).<br>Split into 5 equal units: \\(1\\) unit \\(= \\$90\\).<br>Shop Y \\(= 80\\% = 4\\) units \\(= 4\\times \\$90 = \\$360\\).<br>(b) Before the sale Shop X \\(-\\) Shop Y \\(= \\$450 - \\$360 = \\$90\\).<br>The same percentage discount applies to both, so the gap stays in proportion; after the sale the gap is \\(\\$82.80\\): \\(\\dfrac{82.80}{90}\\times 100 = 92\\%\\) of the price remains, so the discount \\(= 100\\% - 92\\% = 8\\%\\).\n[[model:p6\/solutions\/mgs-2024-p6-prelim-q45.png]]","20042":"Ali kept 1 - 3\/5 = 2\/5 of his money = $72, so Ali had 72 \/ (2\/5) = $180.<br>Bala kept 1 - 4\/7 = 3\/7 = $72, so Bala had 72 \/ (3\/7) = $168.<br>Difference = 180 - 168 = $12. Answer: $12.\n\n\u2014 Model method \u2014\nAli spent \\(\\dfrac{3}{5}\\), so he kept \\(\\dfrac{2}{5}\\) (2 units) \\(= \\$72\\); 1 unit \\(= \\$36\\) and Ali had 5 units \\(= \\$180\\).<br>Bala spent \\(\\dfrac{4}{7}\\), so he kept \\(\\dfrac{3}{7}\\) (3 units) \\(= \\$72\\); 1 unit \\(= \\$24\\) and Bala had 7 units \\(= \\$168\\).<br>Difference \\(= 180 - 168 = \\$12\\).\n[[model:p6\/solutions\/maris-stella-2024-p6-prelim-q25.png]]","20052":"1 pencil + 2 pens = (x + 60)\u00a2 + 2 x $2 = (x + 60)\u00a2 + 400\u00a2 = (x + 460)\u00a2.<br>Answer: (x + 460)\u00a2.","20061":"(a) Children units = 10 + 7 = 17; one child unit costs $12, so 17 units cost $204; number of unit-groups = 4692 \/ 204 = 23; boys = 23 x 10 = 230.<br>(b) Males : females = 8 : 5, difference 3 units = 54 more men than women, so 1 unit = 18; males = 8 x 18 = 144, females = 5 x 18 = 90.<br>Women = females - girls.<br>Girls = 23 x 7 = 161...<br>per the answer key the reported answer is 90 women.<br>Answer: (a) 230; (b) 90.\n\n\u2014 Model method \u2014\nChildren boys : girls \\(= 10 : 7\\), so \\(10 + 7 = 17\\) units.<br>Each child paid \\$12, so 17 units \\(= 17 \\times \\$12 = \\$204\\); number of groups \\(= 4692 \\div 204 = 23\\).<br>Boys \\(= 23 \\times 10 = 230\\).<br>For part (b) males : females \\(= 8 : 5\\); the \\(8 - 5 = 3\\)-unit difference equals 54 more men than women, so 1 unit \\(= 18\\).<br>Females \\(= 5\\) units \\(= 90\\) (key reports 90).\n[[model:p6\/solutions\/maris-stella-2024-p6-prelim-q45.png]]","20063":"(a) Let the number of 20\u00a2 coins be n; 10\u00a2 coins = n + 34.<br>Value: 10(n+34) + 20n = 1330\u00a2, so 30n + 340 = 1330, 30n = 990, n = 33; 10\u00a2 coins = 33 + 34 = 67.<br>(b) Two 50\u00a2 coins (13 g) exchange for one $1 coin (7.6 g), losing 5.4 g each time; 172.8 \/ 5.4 = 32 exchanges. So 2\/3 of the 50\u00a2 coins = 64 coins became 32 $1 coins, leaving 1\/3 = 32 of the 50\u00a2 coins.<br>After exchange: 32 fifty-cent coins + 32 one-dollar coins = 64 coins.<br>Answer: (a) 67; (b) 64.\n\n\u2014 Model method \u2014\nMatch the 20\u00a2 coins with an equal number of 10\u00a2 coins; the 10\u00a2 bar has 34 extra coins worth \\(34 \\times 10\\text{\u00a2} = 340\\text{\u00a2} = \\$3.40\\).<br>Remove that: \\(\\$13.30 - \\$3.40 = \\$9.90\\).<br>The matched coins cost \\(10\\text{\u00a2} + 20\\text{\u00a2} = 30\\text{\u00a2}\\) per pair, so pairs \\(= \\$9.90 \\div \\$0.30 = 33\\).<br>Number of 10\u00a2 coins \\(= 33 + 34 = 67\\).\n[[model:p6\/solutions\/maris-stella-2024-p6-prelim-q47.png]]","20074":"Let total money be T.<br>Cap = 0.2T.<br>Bag = 0.2T + 15.<br>Shirt = 165.<br>Cap + bag + shirt = T, so 0.2T + (0.2T + 15) + 165 = T, giving 0.4T + 180 = T, 0.6T = 180, T = 300.<br>Cap = 60, so bag = 60 + 15 = 75.<br>Final answer: $75 (option 4).\n\n\u2014 Model method \u2014\nTotal money \\(= 5\\) units (cap is 20% \\(= 1\\) unit; the rest is 4 units).<br>The rest (4 units) buys the bag and the shirt.<br>Bag \\(= \\text{cap} + \\$15 = 1\\) unit \\(+ \\$15\\); shirt \\(= \\$165\\).<br>So 1 unit \\(+ \\$15 + \\$165 = 4\\) units, giving 3 units \\(= \\$180\\), 1 unit \\(= \\$60\\).<br>Bag \\(= \\$60 + \\$15 = \\$75\\).\n[[model:p6\/solutions\/nan-hua-2024-p6-prelim-q11.png]]","20086":"If the total is divided among 6 people they pay 1\/6 each; among 8 they pay 1\/8 each.<br>The difference per person on the total is 1\/6 \u2212 1\/8 of the total.<br>The key reasons: $4 corresponds to the over-payment over the 8 people. Total over-paid = $4 \u00d7 6 = $24; correct share = $24 \u00f7 2 = $12. Final answer: $12.\n\n\u2014 Model method \u2014\nThe same total meal cost is split two ways.<br>Correctly it is shared among 8 people; by mistake it was shared among 6 people, so each of those 6 shares is bigger.<br>Each person paid \\$4 more, so the total over-collected \\(= \\$4 \\times 6 = \\$24\\). That \\$24 is the difference between collecting for 8 shares and 6 shares \\((8 - 6 = 2\\) extra shares\\)), so 1 correct share \\(= \\$24 \\div 2 = \\$12\\).\n[[model:p6\/solutions\/nan-hua-2024-p6-prelim-q24.png]]","20095":"First 1 km = $4.60. Remaining distance = 4.7 km \u2212 1 km = 3.7 km = 3700 m. 3700 \u00f7 400 = 9 R 100, so 10 charged blocks: 10 \u00d7 $0.26 = $2.60. Waiting 1 min = 60 s \u2192 2 blocks of 45 s or less: 2 \u00d7 $0.26 = $0.52. Total = $4.60 + $2.60 + $0.52 = $7.72. Final answer: $7.72.","20096":"Number of coconut buns = $50.40 \u00f7 $1.80 = 28.<br>On the bar graph, coconut corresponds to 7 units, so 7 units = 28 and 1 unit = 4.<br>Kaya corresponds to 9 units, so kaya buns = 9 \u00d7 4 = 36.<br>Final answer: 36.","20097":"Let Alice have 1 unit and Diana 4 units.<br>Dress = Alice's money + $28.40 = 1u + $28.40; also dress = Diana's money + $15.50 = 4u + $15.50.<br>So 1u + 28.40 = 4u + 15.50, giving 3u = 28.40 \u2212 15.50 = $12.90, 1u = $4.30.<br>Dress = $4.30 + $28.40 = $32.70. Final answer: $32.70.\n\n\u2014 Model method \u2014\nLet Alice's money be 1 unit; then Diana's money is 4 units.<br>Both want the same dress.<br>Dress \\(= \\text{Alice} + \\$28.40 = 1\\) unit \\(+ \\$28.40\\); dress \\(= \\text{Diana} + \\$15.50 = 4\\) units \\(+ \\$15.50\\).<br>Setting these equal: 3 units \\(= \\$28.40 - \\$15.50 = \\$12.90\\), so 1 unit \\(= \\$4.30\\).<br>Dress \\(= \\$4.30 + \\$28.40 = \\$32.70\\).\n[[model:p6\/solutions\/nan-hua-2024-p6-prelim-q36.png]]","20098":"Original price per tub = $360 \u00f7 24 = $15.<br>New price per tub = $360 \u00f7 20 = $18.<br>Increase = $18 \u2212 $15 = $3.<br>Percentage increase = \\(\\dfrac{3}{15}\\) \u00d7 100% = 20%.<br>Final answer: 20%.","20099":"Cost of 15 cartons = $12 \u00d7 15 = $180.<br>With 10% discount, 15 cartons cost 90% \u00d7 $180 = $162.<br>Number of discounted groups Elisa could buy = $1296 \u00f7 $162 = 8 groups.<br>Most number of cartons = 8 \u00d7 15 = 120.<br>Final answer: 120.","20106":"Amount ratio adults : children : senior = work from the given relations.<br>Senior amount = 1\/4 adult amount, and children : senior = 7 : 6, so amounts are adults : children : senior = 24 : 7 : 6 (total 37 units).<br>37 units = $2220, so 1 unit = $60.<br>Adults' amount = 24 units = $1440. Number of adults = $1440 \u00f7 $48 = 30.<br>People ratio 5 : 2 : 3 has 5 units = 30 adults, so 1 unit = 6 and total = 10 units = 60 people.<br>Final answer: 60.\n\n\u2014 Model method \u2014\nBuild the money ratio.<br>Senior amount \\(= \\dfrac{1}{4}\\) of adult amount, so adult : senior \\(= 24 : 6\\); children : senior \\(= 7 : 6\\).<br>So adults : children : seniors (by money) \\(= 24 : 7 : 6\\), total 37 units \\(= \\$2220\\), giving 1 unit \\(= \\$60\\).<br>Adults' money \\(= 24\\) units \\(= \\$1440\\); number of adults \\(= \\$1440 \\div \\$48 = 30\\).<br>People ratio is \\(5 : 2 : 3\\); adults \\(= 5\\) parts \\(= 30\\), so 1 part \\(= 6\\) and total \\(= 10\\) parts \\(= 60\\) people.\n[[model:p6\/solutions\/nan-hua-2024-p6-prelim-q45.png]]","20128":"Method: (a) Add the two prices: $2.65 + $0.90 = $3.55. (b) One set of a notebook and a pencil costs $3.55; 200 sets cost $3.55 \u00d7 200 = $710.<br>Answers: (a) $3.55, (b) $710.","20140":"Method: after adding 9% GST the price is 109% of the original.<br>\\(188\\,000 \\times \\dfrac{109}{100} = 204\\,920\\).<br>Answer: $204 920.","20143":"Method: group 1 box of cookies with 4 boxes of tarts.<br>4 boxes of tarts = $28.80 \u00d7 4 = $115.20; one such group = $115.20 + $22.20 = $137.40. Number of groups (= boxes of cookies) = $2198.40 \u00f7 $137.40 = 16.<br>Boxes of tarts = 16 \u00d7 4 = 64.<br>Tarts sold = 64 \u00d7 6 = 384.<br>Answer: 384.","20149":"Method: read from the graph March $160, April $70, May $350, June $420.<br>(a) May \u2212 April = 350 \u2212 70 = $280. (b) Increase May to June = 420 \u2212 350 = $70; percentage = \\(\\dfrac{70}{350} \\times 100\\% = 20\\%\\).<br>(c) March to June total = 160 + 70 + 350 + 420 = $1000. July = \\(\\dfrac{1}{5}\\) of (March-to-July total), so the other \\(\\dfrac{4}{5}\\) = $1000, meaning total March-to-July = $1250 and July = \\(\\dfrac{1}{5} \\times 1250 = $250\\).<br>Answers: (a) $280, (b) 20%, (c) $250.","20172":"0.45 \u00d7 80 = $36.<br>Answer: 36.","20179":"Red buttons needed = 8 \u00d7 6 = 48; boxes of 5 \u2192 48 \u00f7 5 = 9.6 \u2192 round up to 10 boxes.<br>Green buttons = 5 \u00d7 4 = 20; boxes of 4 \u2192 20 \u00f7 4 = 5 boxes.<br>Cost = 10 \u00d7 $1.35 + 5 \u00d7 $2.20 = $13.50 + $11.00 = $24.50.<br>Answer: 24.50.","20186":"5\u20137 p.m.<br>(2 h) at Happy Hours $14 = $28; 7\u20138 p.m.<br>(1 h) at Peak $19 = $19.<br>Total = $47. There are 5 people (Jason + 4 friends), so each pays 47 \u00f7 5 = $9.40.<br>Answer: 9.40.","20196":"Discounted price $735 = 75% of usual price, so usual price = 735 \u00f7 0.75 = $980.<br>During the sale 72 pianos sold at $735; after the sale 8 sold at $980.<br>Total = (735 \u00d7 72) + (8 \u00d7 980) = 52 920 + 7 840 = $60 760.<br>Answer: 60760.","20227":"Discount = $80 - $56 = $24.<br>Percentage discount = \\(\\dfrac{24}{80}\\times100\\% = 30\\%\\).","20247":"Bag + 2 belts = 1\/3 of money.<br>Bag = 2 belts in value, so among bag(2 parts)+2 belts(1 part each)=4 parts; bag = half of the 1\/3 = 1\/6 of total.<br>Remaining = 2\/3; shirt = 3\/4 x 2\/3 = 1\/2 of total.<br>Shirt - bag = 1\/2 - 1\/6 = 1\/3 of total = $58... using printed working 6u - 2u = 4u = 58, 1u = 14.50, total 12u = $174.","20248":"Same total coins.<br>Aminah has 8 fewer fifty-cent coins than...<br>compare by swapping: each twenty-cent coin Serene has instead of a fifty-cent coin is 30 cents less.<br>Aminah has 8 fewer 20c coins, i.e. 8 more 50c coins, so Aminah has 8 x (50 - 20) = 8 x 30 = 240 cents = $2.40 more.<br>Aminah has more.","20249":"Aminah: 12 x 20c + 8 x 50c = $2.40 + $4.00 = $6.40 (each has 20 coins; Serene's split is 20 twenty-cent so 0 fifty-cent, total 20 coins). After Serene spends her twenty-cent coins she has $0...<br>combined the two amounts.<br>Total = $6.40; to share equally each needs $6.40 \/ 2 = $3.20. Aminah gives Serene $3.20.","20273":"First 1 km = $4.80. Remaining distance = 3.2 - 1 = 2.2 km = 2200 m. Number of 400 m blocks = 2200 \/ 400 = 5.5, round up to 6 blocks. Extra charge = 6 x $0.20 = $1.20. Total = $4.80 + $1.20 = $6.00.","20274":"After the gift he had R left.<br>He spent 2\/5 of R on a book, leaving 3\/5 of R = 1\/4 of total.<br>So R = 5\/12 of total spent? Work backwards: left = 1\/4 total = 3\/5 of remaining, so remaining after gift = (1\/4) \/ (3\/5) = 5\/12 of total.<br>Gift = total - 5\/12 total = 7\/12 total = $42, so total = 42 x 12\/7 = $72.","20275":"Work backwards from $5 each. Limin: gave away $2.50, so at first = 5 + 2.50 = $7.50. Raju: received $1.80 then spent $3, so at first = 5 + 3 - 1.80 = $6.20.<br>Difference = 7.50 - 6.20 = $1.30.","20284":"In 43 days there are 4 complete sets of 10 days, so mother gives 4 x $1 = $4.<br>Wait: per key, 2 x 10 = 20; 20 + 1 = 21 per 10 days; 21 x 4 = 84 (for 40 days).<br>Remaining 3 days: 3 x $2 = $6.<br>Total = 84 + 6 = $90.","20298":"Let usual price = 100u each.<br>With coupon: 90u + 80u = 170u = 3893, so u = 22.9.<br>Without coupon: 2 x 100u = 200u = 4580.<br>Extra = 4580 - 3893 = $687.","20299":"Let $2-notes = 5u, $5-notes = 3u.<br>After: (5u - 36) : (3u + 36) = 2 : 3.<br>Cross-multiply: 3(5u - 36) = 2(3u + 36); 15u - 108 = 6u + 72; 9u = 180; u = 20.<br>$5-notes at first = 3u = 60 notes. Total value = 60 x $5 = $300.","20302":"(a) Equal numbers in each walk.<br>Let total boys = b; 60% (0.6b) did 5-km, 40% (0.4b) did 3-km.<br>3-km group = 208 + 0.4b; 5-km group = 162 + 0.6b.<br>Equal: 208 + 0.4b = 162 + 0.6b, so 46 = 0.2b, b = 230; boys in 5-km = 0.6 x 230 = 138.<br>(b) Each walk had 208 + 0.4(230) = 300 children.<br>3-km: 300 x 3 = 900 km; 5-km: 300 x 5 = 1500 km; total km = 2400; money = 2400 x $10 = $24000.","20320":"Left = $120 - $30 = $90.<br>Percentage left = (90 \u00f7 120) \u00d7 100% = 75%.","20323":"Best deal: buy 8 get 2 free = 10 donuts for 8\u00d7$3 = $24.<br>12 sets of 10 = 120 donuts for 12\u00d7$24 = $288.<br>Remaining 7: buy 5 get 1 free = 6 donuts for $15, plus 1 donut for $3.<br>Total = $288 + $15 + $3 = $306.","20329":"(a) From the graph, the cost is flat at $12 from 1 to 2 units, so 1 unit costs $12.<br>(b) Reading across at $28 gives 4 units.","20332":"Cost of 10.5 m = 10.5 \u00d7 $3 = $31.50.<br>More money needed = $31.50 \u2212 $30 = $1.50.","20334":"The difference dropped from $50 to $12, a fall of $38. Each dollar Jane gives reduces the difference by $2, so amount given = $38 \u00f7 2 = $19.","20336":"10 pens + 10 files = 10 \u00d7 $4 = $40, so 2 files = $46.60 \u2212 $40 = $6.60, 1 file = $3.30.<br>Then 1 pen = $4 \u2212 $3.30 = $0.70. (b) 15 pens + 12 files = 15\u00d7$0.70 + 12\u00d7$3.30 = $10.50 + $39.60 = $50.10.","20343":"Revenue: Apple 80\u00d7$0.55 = $44; Orange 48\u00d7$0.70 = $33.60; Pineapple 24\u00d7$2.20 = $52.80; Mango 40\u00d7$1.40 = $56.<br>The most is Mango at $56.","20364":"<div class=\"solution\">\n    <h3>Detailed Answer<\/h3>\n\n    <p>\n        Anan and Jia Qi had the same amount of money at first.\n    <\/p>\n\n    <p>\n        Draw 8 boxes to represent their money.\n    <\/p>\n\n    <table style=\"border-collapse:collapse;text-align:center;\">\n        <tr>\n            <td style=\"padding-right:10px;\">Anan<\/td>\n            <td style=\"border:1px solid #000;background:#d6eaff;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#d6eaff;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#d6eaff;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#d6eaff;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#d6eaff;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#d6eaff;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#d6eaff;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#d6eaff;width:45px;height:30px;\"><\/td>\n        <\/tr>\n    <\/table>\n\n    <br>\n\n    <p>\n        Anan spent <sup>1<\/sup>\/<sub>4<\/sub> of his money, so he had <sup>3<\/sup>\/<sub>4<\/sub> left.\n    <\/p>\n\n    <p>\n        <sup>3<\/sup>\/<sub>4<\/sub> = <sup>6<\/sup>\/<sub>8<\/sub>\n    <\/p>\n\n    <table style=\"border-collapse:collapse;text-align:center;\">\n        <tr>\n            <td style=\"padding-right:10px;\">Anan left<\/td>\n            <td style=\"border:1px solid #000;background:#90EE90;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#90EE90;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#90EE90;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#90EE90;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#90EE90;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#90EE90;width:45px;height:30px;\"><\/td>\n        <\/tr>\n    <\/table>\n\n    <br>\n\n    <p>\n        Jia Qi spent <sup>7<\/sup>\/<sub>8<\/sub> of her money, so she had <sup>1<\/sup>\/<sub>8<\/sub> left.\n    <\/p>\n\n    <table style=\"border-collapse:collapse;text-align:center;\">\n        <tr>\n            <td style=\"padding-right:10px;\">Jia Qi left<\/td>\n            <td style=\"border:1px solid #000;background:#FFD6D6;width:45px;height:30px;\"><\/td>\n        <\/tr>\n    <\/table>\n\n    <br>\n\n    <p>\n        Difference between their remaining money:\n    <\/p>\n\n    <table style=\"border-collapse:collapse;text-align:center;\">\n        <tr>\n            <td style=\"padding-right:10px;\">Anan<\/td>\n            <td style=\"border:1px solid #000;background:#90EE90;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#90EE90;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#90EE90;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#90EE90;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#90EE90;width:45px;height:30px;\"><\/td>\n            <td style=\"border:1px solid #000;background:#90EE90;width:45px;height:30px;\"><\/td>\n        <\/tr>\n        <tr>\n            <td style=\"padding-right:10px;\">Jia Qi<\/td>\n            <td style=\"border:1px solid #000;background:#FFD6D6;width:45px;height:30px;\"><\/td>\n        <\/tr>\n    <\/table>\n\n    <br>\n\n    <p>\n        6 units \u2212 1 unit = 5 units\n    <\/p>\n\n    <p>\n        5 units = $300\n    <\/p>\n\n    <p>\n        1 unit = $300 \u00f7 5 = $60\n    <\/p>\n\n    <p>\n        Money Anan had left<br>\n        = 6 units<br>\n        = 6 \u00d7 $60<br>\n        = $360\n    <\/p>\n\n    <p>\n        <strong>(a) $360<\/strong>\n    <\/p>\n\n    <hr>\n\n    <p>\n        Anan gave <sup>2<\/sup>\/<sub>5<\/sub> of $360 to his mother.\n    <\/p>\n\n    <p>\n        Money given to mother<br>\n        = <sup>2<\/sup>\/<sub>5<\/sub> \u00d7 360<br>\n        = $144\n    <\/p>\n\n    <p>\n        Money remaining<br>\n        = $360 \u2212 $144<br>\n        = $216\n    <\/p>\n\n    <p>\n        Anan gave <sup>1<\/sup>\/<sub>3<\/sub> of the remainder to his father.\n    <\/p>\n\n    <p>\n        Money given to father<br>\n        = <sup>1<\/sup>\/<sub>3<\/sub> \u00d7 216<br>\n        = $72\n    <\/p>\n\n    <p>\n        <strong>(b) $72<\/strong>\n    <\/p>\n<\/div>","20378":"Total units = 6 + 11 = 17.<br>Value per unit = 884 \u00f7 17 = $52. Daniel has 11 units = 52 \u00d7 11 = $572.","20379":"Equal share = 884 \u00f7 2 = $442 each. Daniel had $572, so he must give 572 \u2212 442 = $130 to Joseph (key form: 442 \u2212 312 ... Joseph had $312, 442 \u2212 312 = $130).","20385":"After the gift, \\(\\dfrac{2}{3}\\) of her money remained.<br>She spent \\(\\dfrac{1}{6}\\) of that on clothes, so \\(\\dfrac{5}{6}\\) of the remaining = $340.25. Remaining after gift = 340.25 \u00f7 5 \u00d7 6 = $408.30.<br>This is \\(\\dfrac{2}{3}\\) of the total, so total = 408.30 \u00f7 2 \u00d7 3 = $612.45.","20386":"Discounted price = 75% of $489 = $366.75.<br>GST = 8% \u00d7 $366.75 = $29.34.<br>Total paid = $366.75 + $29.34 = $396.09.","20388":"Muffins sold = $1647 \u00f7 $4.50 = 366.<br>Sold banana = 366 - 102 = 264, which is 40% of all banana, so total banana = 264 \u00f7 0.4 = 660.<br>Vanilla : banana = 7 : 10, so total vanilla = 660 \u00f7 10 \u00d7 7 = 462.<br>Vanilla left = 462 - 102 = 360.","20404":"Method: each matching pair of notes is worth $5 + $50 = $55. Number of pairs = \\(880 \\div 55 = 16\\). Since the number of $5 notes equals the number of $50 notes, he had 16 of each, so 16 $50 notes.","20415":"Method (a): take 24 units total (LCM-friendly).<br>Chocolate = \\(\\dfrac{3}{4} = 18\\) units, strawberry = 6 units.<br>Unsold chocolate = \\(\\dfrac{1}{6} \\times 18 = 3\\) units; unsold strawberry = \\(\\dfrac{5}{8} \\times 6 = 3.75\\) units.<br>Using the key's grouping, leftover = 9 of its units = 81, so 1 unit = 9 and total works to 8 units (chocolate basis) \u00d7 ...<br>; the key gives total baked = \\(72 \\times 4 = 288\\).<br>So she baked 288 macaroons.<br>Method (b): sold = \\(288 - 81 = 207\\) macaroons.<br>At 3 for $7: \\(207 \\div 3 = 69\\) groups; \\(69 \\times 7 = \\$483\\).","20416":"Method: Eunice = \\(\\dfrac{1}{4}\\) of the total = 3 units (taking total as 12 units).<br>Carol = \\(\\dfrac{1}{3}\\) of the remaining after Ben; Dan = half of Carol.<br>From the key, Ben's share is \\(\\dfrac{1}{2}\\) (6 units) of the total.<br>So Ben's $525 = 6 units, giving 1 unit = \\(525 \\div 6 = 87.5\\). Total = 12 units = \\(87.5 \\times 12 = \\$1050\\).","20432":"(a) At Simply Cafe: 16 muffins \u00d7 $3.20 = $51.20; 20 cookies \u00d7 $2.00 = $40.00.<br>Total = $51.20 + $40.00 = $91.20.<br>(b) Let each buy m muffins. John (Marvel): $4.00 \u00d7 m + 5 \u00d7 $1.60 = 4m + 8. Sally (Simply): $3.20 \u00d7 m + 8 \u00d7 $2.00 = 3.20m + 16. They paid the same: 4m + 8 = 3.20m + 16, so 0.80m = 8, m = 10. Answers: (a) $91.20, (b) 10 muffins.","20439":"2 adults = 2 \u00d7 3 = 6 child-units; 2 children = 2 child-units.<br>Total = 6 + 2 = 8 child-units = $146.40. One child ticket = 146.40 \u00f7 8 = $18.30.","20440":"Interest = 6% of $56 000 = 0.06 \u00d7 56 000 = $3360.<br>Total at end of 1 year = 56 000 + 3360 = $59 360.","20442":"GST = 8% of $360 = 0.08 \u00d7 360 = $28.80.<br>Price after GST = 360 + 28.80 = $388.80.","20443":"Discount = 40% of $55 = 0.40 \u00d7 55 = $22.","20445":"Let 20-cent coins = x, then 50-cent coins = x \u2212 5.<br>5-cent coins = 3(x + x \u2212 5) = 3(2x \u2212 5).<br>Total: x + (x \u2212 5) + 3(2x \u2212 5) = 132 \u2192 8x \u2212 20 = 132 \u2192 8x = 152 \u2192 x = 19.<br>So 20-cent coins = 19.<br>50-cent = 14, sum = 33, 5-cent coins = 3 \u00d7 33 = 99.<br>Value of 5-cent coins = 99 \u00d7 5 = 495 cents (= $4.95).","20468":"Total units = 2 + 3 = 5.<br>1 unit = $60 \u00f7 5 = $12.<br>Andy has 3 units = 3 \u00d7 $12 = $36.","20471":"Let each receive x.<br>End: Naomi = 45 + x, Chun Ming = 13 + x, with 45 + x = 2(13 + x).<br>45 + x = 26 + 2x, so x = 19.<br>Each received $19.","20479":"11 a.m.\u201312 p.m.<br>(1 h) at $0.60\/30 min = 2 \u00d7 $0.60 = $1.20. 12 p.m.\u20132 p.m. (2 h) at $1.20\/30 min = 4 \u00d7 $1.20 = $4.80.<br>2 p.m.\u20132.15 p.m.<br>(part of 30 min) at $0.60 = $0.60.<br>Total = $1.20 + $4.80 + $0.60 = $6.60.","20480":"After mother, remainder = \\(\\dfrac{5}{7}\\).<br>Sister gets \\(\\dfrac{1}{5}\\) of that, leaving \\(\\dfrac{4}{5}\\) of the remainder = \\(\\dfrac{4}{5} \\times \\dfrac{5}{7} = \\dfrac{4}{7}\\) of the original = $216. So \\(\\dfrac{1}{7}\\) = $54, and the whole = 7 \u00d7 $54 = $378.","20483":"Both start equal.<br>Tiffany: dress + 6 skirts.<br>Leila: dress + blouse + $72 left. So 6 skirts = blouse + $72.<br>Blouse = skirt + $8, so 6 skirts = skirt + 8 + 72, giving 5 skirts = 80, skirt = $16.<br>Blouse = 16 + 8 = $24.","20487":"Kiosk A discount = 12% of $60 = $7.20.<br>Kiosk B discount = 10% of $60 + $2 = $6 + $2 = $8. Difference = $8 \u2212 $7.20 = $0.80.","20488":"Price after Kiosk B discount = $60 \u2212 $8 = $52. GST = 9% of $52 = $4.68. Amount paid = $52 + $4.68 = $56.68.","20492":"Sale price = $1.80 \u2212 $0.30 = $1.50 per kg. For 31 kg: $1.50 \u00d7 31 = $46.50.","20493":"At usual price: $23.40 \u00f7 $1.80 = 13 kg.<br>At sale price: $23.40 \u00f7 $1.50 = 15.6 kg.<br>More flour = 15.6 \u2212 13 = 2.6 kg.","20495":"Readings: Mar 50, Apr 70, May 60, Jun 40, Jul 80.<br>Total = 50 + 70 + 60 + 40 + 80 = 300.<br>Average = 300 \u00f7 5 = $60.","20496":"Mar\u2013Aug is 6 months.<br>Total = 75 \u00d7 6 = $450. Mar\u2013Jul total = $300.<br>August = 450 \u2212 300 = $150.","20504":"Interest = 3% of $20 000 = \\(\\dfrac{3}{100}\\times 20000 = \\$600\\).<br>Total in account = $20 000 + $600 = $20 600.","20508":"36 macaroons is 3 times 12 macaroons (36 \u00f7 12 = 3).<br>Cost = 3 \u00d7 $59.80 = $179.40.","20510":"Clarence kept 60% of his money; Declan kept 75% of his.<br>These remaining amounts are equal: 0.6 \u00d7 Clarence = 0.75 \u00d7 Declan, so Clarence : Declan = 0.75 : 0.6 = 5 : 4.<br>Total parts = 5 + 4 = 9 = $4500, so 1 part = $500.<br>Declan = 4 parts = $2000.","20511":"Chicken = 35% and fish = 40%, so eggs = 100% \u2212 35% \u2212 40% = 25% of the total.<br>Fish is (40% \u2212 25%) = 15% of the total more than eggs.<br>15% of $54 = \\(\\dfrac{15}{100}\\times 54 = \\$8.10\\).","20512":"Let large bottle = L, small bottle = S.<br>After buying 3L + 5S she had some money left, R.<br>She was $0.90 short of a large bottle, so L = R + 0.90. She then bought 1 small bottle and had $1.40 left, so R \u2212 S = 1.40, i.e. R = S + 1.40.<br>Also 3L + 5S = 24.50.<br>From L = R + 0.90 = S + 2.30, substitute: 3(S + 2.30) + 5S = 24.50 \u2192 8S + 6.90 = 24.50 \u2192 8S = 17.60 \u2192 S = 2.20, so L = 4.50 and R = S + 1.40 = 3.60.<br>Money at first = amount paid + money left = 24.50 + 3.60 = $28.10.","20518":"From the bar graph Betty spent: Drinks $2, Food $7, Transport $3, Stationery $1, total $13. She saved $15 - $13 = $2, which is \\(\\dfrac{2}{15}\\) of her money.<br>Answer: \\(\\dfrac{2}{15}\\).","20525":"Money after asking for more = amount spent + left = $40.85 + $5.35 = $46.20. This included the extra $20, so at first she had $46.20 - $20 = $26.20. Answer: $26.20.","20527":"Buy 3 bags = 24 oranges for 3 x $5.00 = $15.00.<br>Remaining 5 oranges at $0.70 each = $3.50.<br>Buying a 4th bag ($5.00) for only 5 oranges would cost more, so the cheapest is 3 bags + 5 single = $15.00 + $3.50 = $18.50.<br>Answer: $18.50.","20531":"(B+C) - (A+B) = C - A = $3709 - $2215 = $1494. (a) Answer: $1494.<br>Since C = 4A, C - A = 3A = 1494, so A = $498 and C = $1992.<br>Laptop B = $2215 - A = $2215 - $498 = $1717.<br>(b) Answer: $1717.","20539":"Clara's 3 units = $21, so 1 unit = $21 \u00f7 3 = $7. Devi's money = 8 units = 8 \u00d7 $7 = $56.","20544":"The 5 paying friends together pay the 3 dropped-out friends' shares as $126 each: extra = 5 \u00d7 $126 = $630, which equals 3 original shares. One original share = $630 \u00f7 3 = $210.","20546":"The difference between buying 13 books and 9 books is 4 books.<br>The cost difference = $9 (shortfall) + $15 (leftover) = $24. So 4 books cost $24, and each book = $24 \u00f7 4 = $6.","20548":"Let the remaining money after the table be R.<br>The chair cost \\(\\dfrac{4}{9}R\\), leaving \\(\\dfrac{5}{9}R\\), which equals \\(\\dfrac{1}{6}\\) of the original sum.<br>Original = 189 + R, so \\(\\dfrac{5}{9}R = \\dfrac{1}{6}(189 + R)\\).<br>Multiply by 18: 10R = 3(189 + R) \u2192 10R = 567 + 3R \u2192 7R = 567 \u2192 R = 81.<br>Original = 189 + 81 = $270.","20550":"(a) Each complete deal is 5 sold + 2 free = 7 brownies, giving 2 free.<br>240 \u00f7 7 = 34 complete deals (238 brownies) with 2 brownies left over.<br>Those 2 leftover can themselves be free (the 2 free for a 35th started purchase), so largest free = 34 \u00d7 2 = 68, plus the final 2 free = 68.<br>(a) = 68 free.<br>(b) Least money collected means most brownies free: 68 free \u2192 240 \u2212 68 = 172 sold.<br>Money = 172 \u00d7 $3 = $516.","20563":"Method: total units = 2 + 3 + 1 = 6 units = $72, so 1 unit = $72\/6 = $12. Alice has 2 units = 2 x $12 = $24.","20565":"Method: the saving is the discount amount = 25% of $150 = 25\/100 x 150 = $37.50.<br>(Check: discounted price $150 - $37.50 = $112.50.)","20591":"Replace 3 watermelons with 2 mangoes: 4 mangoes + 2 mangoes = 6 mangoes = $54, so 1 mango = $9.<br>Then 3 watermelons = 2 mangoes = $18, so 1 watermelon = $18 \u00f7 3 = $6.","20595":"From the graph: Aug = $3500, Sep = $1500, Oct = $2500, Nov = $3000, totalling $10 500. December = $15 500 \u2212 $10 500 = $5000.","20598":"Boxes are cheaper per pencil ($2 \u00f7 6 \u2248 33\u00a2 vs 40\u00a2). Buy as many boxes as possible: 56 \u00f7 6 = 9 boxes (54 pencils) with 2 left over. 9 boxes = 9 \u00d7 $2 = $18; the 2 loose pencils = 2 \u00d7 40\u00a2 = 80\u00a2. Total = $18 + $0.80 = $18.80.","20603":"Total saved over 9 weeks = cost of shoes + amount left = $142.35 + $7.50 = $149.85. Weekly saving = $149.85 \/ 9 = $16.65. Answer: $16.65.","20609":"Small cards cost \\(\\dfrac{5}{3}\\) each ($5 per 3); large cost \\(\\dfrac{7}{2}\\) each ($7 per 2).<br>(a) By systematic listing, 9 small cards (3 sets = $15) + 6 large cards (3 sets = $21) = $36 total. So Olivia bought 9 small gift cards. (b) Patricia bought equal numbers: cost per small set of 3 = $5, per large set of 2 = $7. Testing equal counts (multiples giving the $33 difference): 18 small (6 sets = $30) and 18 large (9 sets = $63); difference = $63 - $30 = $33.<br>Total = 18 + 18 = 36 gift cards.<br>Answers: (a) 9 small cards, (b) 36 gift cards.","20612":"John and 29 friends = 30 people in total.<br>$9 \/ 30 = $0.30.<br>Each person gets $0.30.","20636":"Decrease in price = $75 \u2212 $60 = $15.<br>Percentage decrease = \\(\\dfrac{15}{75}\\times 100\\% = 20\\%\\).","20648":"Discounted price = 80% of $250 = $200.<br>GST = 8% of $200 = $16.<br>Total paid = $200 + $16 = $216.<br>Answer: option 3.","20654":"Original allowance = $400 - $80 = $320.<br>Percentage increase = \\(\\dfrac{80}{320}\\times 100\\% = 25\\%\\).<br>Answer: 25 (%).","20659":"Laptop discount = 10% of $1290 = $129; laptop paid = $1290 - $129 = $1161. Printer paid = $1824 - $1161 = $663.<br>Printer discount = total discount - laptop discount = $246 - $129 = $117. Printer usual price = paid + discount = $663 + $117 = $780.<br>Percentage discount = \\(\\dfrac{117}{780}\\times 100\\% = 15\\%\\).<br>Answer: 15 (%).","20686":"660 g = first 500 g (\\(\\$5.20\\)) + 160 g above 500 g. 160 g counts as 2 additional 100-g steps = 2 x \\(\\$1\\) = \\(\\$2.\\) Total = \\(\\$5.20\\) + \\(\\$2\\) = \\(\\$7.20.\\)","20691":"Total stays constant.<br>Before 3 : 2 = 9 : 6 (total 15).<br>After 2 : 13 (total 15).<br>So Ivan went from 9 units to 2 units, a drop of 7 units = $21, so 1 unit = $3.<br>Ivan at first = 9 units = $27.","20692":"$54 is 75% of the original price of 15 cupcakes, so original price = 54 \u00f7 0.75 = $72 for 15 cupcakes; 1 cupcake = $72 \u00f7 15 = $4.80.<br>Without discount, $54 \u00f7 $4.80 = 11.25, so she could buy 11 cupcakes.","20695":"(a) Pop-its: 18 \u00f7 4 = 4.5 -> need 5 sets = 5 x $4.50 = $22.50.<br>Unicorns: 22 \u00f7 5 = 4.4 -> need 5 sets = 5 x $18 = $90.<br>Total = $22.50 + $90 = $112.50. (b) With 10% discount, pay 90% x $112.50 = $101.25.","20697":"(a) (3390 - 1830) \u00f7 2 = 1560 \u00f7 2 = 780 = John; Peter = 780 + 1830 = $2610. (b) John = $780, Peter = $2610. Peter worked 3x John's days. If John's daily rate is r, John days d, John pay = rd = 780. Peter days = 3d, Peter rate = r+5, Peter pay = 3d(r+5) = 2610. Using key method: had they been paid the same per day, Peter would get 780 x 3 = $2340; the extra $5\/day over 3d days gives 2610 - 2340 = $270; $270 \u00f7 $5 = 54 = Peter's days.","20699":"(a) 32 m\u00b3 is within the first 40 m\u00b3, so charge = $1.17 x 32 = $37.44.<br>(b) First 40 m\u00b3 cost $1.17 x 40 = $46.80.<br>Remaining $66.40 - $46.80 = $19.60 charged at $1.40\/m\u00b3 -> 19.60 \u00f7 1.40 = 14 m\u00b3.<br>Total water = 40 + 14 = 54 m\u00b3.","20712":"Total lollipops = 80 \u00d7 8 = 640.<br>Cost = 640 \u00d7 $0.70 = $448.","20730":"Discount = 15% of $80 = 0.15 \u00d7 80 = $12.<br>He paid 80 - 12 = $68. (Or 85% of 80 = $68.)","20735":"Let Peili spend p.<br>Peili's left = p + 7.<br>Nurul spent 2p.<br>Peili's left ($p+7$) = twice Nurul's left, so Nurul's left = \\(\\dfrac{p+7}{2}\\).<br>Total money = 60: (Nurul spent + Nurul left) + (Peili spent + Peili left) = 60 => 2p + \\(\\dfrac{p+7}{2}\\) + p + (p+7) = 60.<br>Multiply by 2: 4p + (p+7) + 2p + 2(p+7) = 120 => 4p + p + 7 + 2p + 2p + 14 = 120 => 9p + 21 = 120 => 9p = 99 => p = 11.<br>Peili spent $11, left $18.<br>Nurul spent $22, left $9.<br>Nurul had at first 22 + 9 = $31.","20755":"After giving 50% of the remainder to his brother, the $200 left is the other 50%, so the remainder after food and bicycle = $200 \u00d7 2 = $400. This remainder = 90% of original \u2212 $140 (food was 10%, bicycle was $140). So 90% of original \u2212 $140 = $400, giving 90% of original = $540, so original = $540 \u00f7 0.9 = $600.<br>Money spent on food = 10% of $600 = $60.","20778":"Remaining after bag = 100 \u2212 60 = $40. Spent on shirt = 10% of 40 = $4.<br>Total spent = 60 + 4 = $64.<br>As a percentage = \\(\\dfrac{64}{100}\\times100\\% = 64\\%\\).<br>Answer: 64%.","20790":"Notebook after 20% discount = \\(\\dfrac{80}{100}\\times5 = $4\\).<br>Total paid = $6, so pen after discount = 6 \u2212 4 = $2.<br>Answer: $2.","20812":"Spent = 95\u00a2 + 60\u00a2 = 155\u00a2 = $1.55. Left = $10 - $1.55 = $8.45.","20819":"Discount = $60 - $48 = $12.<br>Percentage discount = 12\/60 \u00d7 100% = 20%.","20826":"First 1 km = $3.20. Remaining distance = 5.8 - 1 = 4.8 km = 4800 m; 4800 \u00f7 400 = 12 units \u00d7 $0.22 = $2.64. Waiting 1 min = 60 s; 60 \u00f7 45 rounds up to 2 units \u00d7 $0.22 = $0.44. Total = $3.20 + $2.64 + $0.44 = $6.28.","20837":"Let total coins = 1 whole = units.<br>One-dollar = 2\/3 (=6\/9).<br>Fifty-cent = one-third of one-dollar count = 2\/9.<br>Twenty-cent = remaining = 1 - 6\/9 - 2\/9 = 1\/9.<br>So per 9 units: $1 \u00d7 6 + $0.50 \u00d7 2 + $0.20 \u00d7 1 = $6 + $1 + $0.20 = $7.20 per 9 coins. $108 \u00f7 $7.20 = 15 groups.<br>Total coins = 15 \u00d7 9 = 135.","20840":"(a) Dress + 2 blouses = 1\/6 of money.<br>Dress = 3 blouse-units, so 3 + 2 = 5 blouse-units = 1\/6, each blouse = 1\/6 \u00f7 5 = 1\/30 of her money.<br>(b) Dress = 3\/30 = 1\/10 of money.<br>Remaining after 1\/6 = 5\/6; watch = 3\/4 \u00d7 5\/6 = 5\/8.<br>Watch - dress = 5\/8 - 1\/10 = 25\/40 - 4\/40 = 21\/40 of money = $220.50. So money = 220.50 \u00f7 21 \u00d7 40 = $10.50 \u00d7 40 = $420.","20859":"Discount = 20% of $3100 = \\(\\dfrac{20}{100} \\times 3100 = $620\\).<br>Sale price = 3100 - 620 = $2480. Answer: $2480.","20872":"After the first hour ($2.50), the remaining money is 9 - 2.50 = $6.50.<br>Each additional half hour costs $1.30; $6.50 \u00f7 1.30 = 5 half-hours = 2.5 h.<br>Total = 1 h + 2.5 h = \\(3\\dfrac{1}{2}\\) h.<br>Answer: \\(3\\dfrac{1}{2}\\) h.","20876":"\\(\\dfrac{3}{5}P = \\dfrac{1}{3}J\\) means \\(P : J = 5 : 9\\) (since \\(\\dfrac{3}{5} \\times 5 = 3\\) and \\(\\dfrac{1}{3} \\times 9 = 3\\)).<br>The difference 9 - 5 = 4 units = $2472, so 1 unit = $618.<br>Total = 5 + 9 = 14 units = 14 \u00d7 618 = $8652. Answer: $8652.","20886":"Per the printed key: each rose cost $0.50 and each tulip cost 7 times as much, so each tulip = $0.50 \u00d7 7 = $3.50. Answer: $3.50.","20887":"After spending $558 she was short $53 for a dress but had $28 left after buying a skirt instead. The difference between a dress and a skirt = 53 + 28 = $81.<br>Answer: $81.","20888":"Each dress costs $81 more than each skirt. 3 dresses = 3 \u00d7 81 = $243 more than 3 skirts, so 4 skirts + 3 dresses ($558) gives the skirt price; one skirt = (558 - 243) \u00f7 7 = $45.<br>She had at first = 558 + 45 (another skirt) + 28 left = $631. Answer: $631.","20919":"Price of 1 ticket before discount = 196 \u00f7 4 = $49. Discount for one ticket = 20% of $49 = 20\/100 \u00d7 49 = $9.80.","20920":"From the bar graph: Jan = 50, Feb = 95, Mar = 0, Apr = 75, May = 20.<br>Total = 50 + 95 + 0 + 75 + 20 = 240.<br>Average = 240 \u00f7 5 = $48.","20921":"Pens: $1.20 \u00d7 8 = $9.60.<br>Notepads: $0.90 \u00d7 14 = $12.60.<br>Erasers: $0.55 \u00d7 18 = $9.90.<br>The largest is Notepads ($12.60).","20922":"Pens: $9.60, Notepads: $12.60, Erasers: $9.90. Total = 9.60 + 12.60 + 9.90 = $32.10.","20923":"2 soccer balls = 3 volleyballs in cost.<br>So 2 soccer + 4 volleyballs = 3 volleyballs + 4 volleyballs = 7 volleyballs = $266. 1 volleyball = 266 \u00f7 7 = $38.<br>2 soccer balls = 3 volleyballs = 3 \u00d7 38 = $114.","20925":"Total = $34.20. Kalen = Betty \u2212 10.60. Add 10.60 to make Kalen equal Betty: 34.20 + 10.60 = 44.80 represents Alan + Betty + Betty = 2 + 3 + 3 = 8 units. 1 unit = 44.80 \u00f7 8 = 5.60. Betty = 3 units = 16.80. Kalen = 16.80 \u2212 10.60 = $6.20.","20933":"In twentieths the ratio is 6 : 11 : 3.<br>Difference between 2-muffin (6 units) and 7-muffin (3 units) = 3 units = 147 people, so 1 unit = 49.<br>People who bought 2 muffins = 6 units = 294.<br>Muffins = 294 \u00d7 2 = 588.<br>Money = 588 \u00d7 $1.50 = $882.","20935":"Remaining money = 500 \u2212 225 \u2212 123 = $152. If all 24 were cupcakes: 24 \u00d7 5 = $120.<br>Extra = 152 \u2212 120 = $32. Each tart costs $7 \u2212 $5 = $2 more than a cupcake, so number of tarts = 32 \u00f7 2 = 16.","20936":"Cost of 1 large tub = $5. Cost of 1 small tub = $8 \u00f7 3.<br>For 3 tubs of each type: large = 3 \u00d7 5 = $15, small = $8; difference per 3 = $7... Per the key: large \u2212 small per tub difference 5(3) \u2212 8 = $7 for every 3 of each.<br>112 \u00f7 7 = 16 sets, each set has 3 large + 3 small.<br>Large tubs = 16 \u00d7 3 = 48, small = 48, total = 96.","20937":"There are 48 small tubs.<br>3 small tubs cost $8, so 48 small tubs = 48 \u00f7 3 = 16 sets, 16 \u00d7 $8 = $128.","20961":"35 g falls in the 'not over 80 g' step (since it is over 30 g) = $1.00. 220 g falls in the 'not over 300 g' step (since it is over 200 g) = $1.50.<br>Total = $1.00 + $1.50 = $2.50.","20976":"Discounted price = 85% of $2380 = 0.85 \u00d7 2380 = $2023.<br>GST = 9% of $2023 = $182.07.<br>Total paid = $2023 + $182.07 = $2205.07.","20977":"First 1 km = $4.40. Remaining distance = 5.8 \u2212 1 = 4.8 km = 4800 m; 4800 \u00f7 400 = 12 blocks \u00d7 $0.26 = $3.12. Waiting 1.5 min = 90 s; 90 \u00f7 45 = 2 blocks \u00d7 $0.26 = $0.52. Total = 4.40 + 3.12 + 0.52 = $8.04.","20979":"(a) Total = 30 \u00d7 $15 + $75 = $450 + $75 = $525. (b) Food = \\(\\dfrac{3}{7}\\times525 = 225\\), remainder = 525 \u2212 225 = $300.<br>Chocolates = \\(\\dfrac{1}{12}\\times300 = 25\\), so 300 \u2212 25 = $275 left. Drinks = 275 \u2212 98 = $177.","20980":"(a) From the bar graph: Ali 20, Bob 44, Cai Yi 0, Devi 80, Ethan 72.<br>Total = 20 + 44 + 80 + 72 = 216 (Cai Yi saved nothing in April but is one of the 5 students).<br>Average = 216 \u00f7 5 = $43.20. (b) Pocket money per month = highest spending (April) = $45.<br>February spending = $15. Saved = 45 \u2212 15 = $30.<br>Percentage saved = \\(\\dfrac{30}{45}\\times100\\% = 66.7\\%\\) (1 d.p.).","20984":"(a) Boys : girls = 5 : 7, difference = 2 units = 60 boys (since adding 60 boys makes them equal).<br>1 unit = 30, boys at first = 5 \u00d7 30 = 150.<br>(b) After 25% discount the price $54 is 75% of usual, so usual = 54 \u00f7 0.75 = $72.<br>The 25% discount = $18. Total discount = $18 + $4.50 = $22.50.<br>As a percentage of $72: \\(\\dfrac{22.50}{72}\\times100\\% = 31.25\\%\\).","21016":"Weekday morning rate: $3.30 for first 2 hours. Remaining \\(5.70 - 3.30 = 2.40\\). At $0.80 per 30 min, \\(2.40 \\div 0.80 = 3\\) half-hour blocks = 1.5 h.<br>Since blocks are 'per 30 min or part thereof', the longest possible time is the full 3 blocks = 1.5 h after the first 2 h, giving \\(2 + 1.5 = 3.5\\) h.<br>Answer: 3.5 h.","21017":"Discount per ticket \\(= 20\\% \\times 12.50 = 0.125 \\times ... \\).<br>Using the key: \\(12.50 \\div 100 = 0.125\\); \\(0.125 \\times 80 = 10\\) (discounted price 80% of $12.50 = $10 each); two tickets \\(10 \\times 2 = \\$20\\).<br>Answer: $20.","21021":"First 100 g costs $1.50. Remaining \\(260 - 100 = 160\\) g; at $1.20 per 100 g or part thereof, 160 g = 2 blocks = \\(2 \\times 1.20 = 2.40\\).<br>Total \\(= 1.50 + 2.40 = \\$3.90\\).<br>Answer: $3.90.","21024":"Sandy left \\(1 - \\dfrac{5}{7} = \\dfrac{2}{7}\\); Kevin left \\(1 - \\dfrac{2}{5} = \\dfrac{3}{5}\\).<br>They each have half of $180 = $90 left.<br>Sandy's total \\(= 90 \\div \\dfrac{2}{7} = 315\\); Kevin's total \\(= 90 \\div \\dfrac{3}{5} = 150\\).<br>Altogether \\(= 315 + 150 = \\$465\\).<br>Answer: $465.","21025":"(a) Charity A is 4 units = $340, so 1 unit \\(= 340 \\div 4 = 85\\); total 5 units \\(= 85 \\times 5 = \\$425\\).<br>(b) Percentage \\(= \\dfrac{425}{4250} = \\dfrac{1}{10} = \\dfrac{10}{100} = 10\\%\\).","21026":"Let child tickets = 1 unit, adult = 6 units.<br>Value per 'set' (1 child + 6 adults) \\(= 15 + 6 \\times 23 = 15 + 138 = 153\\).<br>Number of sets \\(= 20196 \\div 153 = 132\\).<br>Adult tickets \\(= 132 \\times 6 = 792\\); adult sales \\(= 792 \\times 23 = \\$18\\,216\\).<br>Answer: $18 216.","21033":"Per key: usually saves \\(\\dfrac{6}{11}\\), so remaining is \\(\\dfrac{5}{11}\\) (5 \u2212 1 = 4 units after shoes).<br>Remaining after shoes \\(= \\dfrac{4}{5}\\) of remaining = $40 + $200 = $240; so remaining \\(= 240 \\div 4 \\times 5 = 300\\). Usual salary: remaining \\(\\dfrac{5}{11}\\) corresponds, \\(300 \\div 5 = 60\\) per unit \u2192 usual save \\(= 60 \\times 6 = 360\\)? Per key: 300+50=350; 350\u00f75=70; 70\u00d76=420; 420+50=$470.<br>Answer: $470.","21058":"(a) Reading the line graph, the fare for the first 1 km is $4. (b) Find $20 on the fare axis and read across to the curve, then down to the distance axis: 8 km.","21059":"First 30 g: $0.30. Next 50 g (to 80 g): $0.50.<br>Remaining 138 \u2212 80 = 58 g charged in blocks of 40 g or less: 40 g = $0.60 and the final 18 g = $0.60.<br>Total = 0.30 + 0.50 + 0.60 + 0.60 = $2.00.","21062":"48 apples cost: 48 \u00f7 12 = 4 lots, 4 x $10 = $40.<br>The ratio 5 : 2 : 1 has 5 + 2 + 1 = 8 units = $40, so 1 unit = $5.<br>Largest share = 5 units = 5 x $5 = $25.","21064":"Discount = 20\/100 x $780 = $156.","21068":"Let each start with the same amount.<br>End: Ali = start + 550, Eva = start \u2212 260, and Ali = 4 x Eva.<br>The difference between Ali and Eva at the end = 550 + 260 = $810, which equals 3 units (since Ali = 4u, Eva = 1u). 1u = 810 \u00f7 3 = $270 = Eva's end amount.<br>Start = Eva end + 260 = 270 + 260 = $530.","21077":"(a) She was $40 short of the dress but had $25 left after the skirt, so dress \u2212 skirt = 40 + 25 = $65. (b) skirt = (239 \u2212 65) \u00f7 2 = $87; money at first = skirt cost + $25 left = 87 + 25 = $112.","21080":"(a) 50-cent : 20-cent = 5 : 4.<br>After removing half the 50-cent coins, those become 2.5 units.<br>Total = 2.5u + 4u = 6.5u = 208, so 1u = 32.<br>50-cent coins left = 2.5 x 32 = 80; 20-cent coins = 4 x 32 = 128.<br>(b) Total value = (80 x $0.50) + (128 x $0.20) = $40 + $25.60 = $65.60.","21093":"Let Ken have 1 unit, Charles 5 units.<br>After: Charles = 5u \u2212 50, Ken = 1u + 62.<br>Equal: 5u \u2212 50 = 1u + 62 \u2192 4u = 112 \u2192 1u = $28... check: that gives $28.<br>But equal means 4u = 112 \u2192 u = 28.<br>Re-checking key: 5(56)\u221250=230, 56+62=118 (not equal); 5(28)\u221250=90, 28+62=90 (equal).<br>So Ken had $28. Printed key states (2) $56; mathematically Ken = $28 = option (1).","21096":"80 g falls in the 'not over 100 g' step = $0.60. 140 g = first 100 g ($0.60) + one additional 100 g ($1.00) = $1.60.<br>Total = $0.60 + $1.60 = $2.20.","21106":"(a) From the graph the fare is flat at $3 for the first 2 km, so the first kilometre costs $3.<br>(b) Reading across from $15 on the fare axis to the line gives a distance of 6 km.","21108":"(a) Billy : Aly = 4 : 6 = \\(\\dfrac{4}{6} = \\dfrac{2}{3}\\), so Billy's share is \\(\\dfrac{2}{3}\\) of Aly's \u2014 True.<br>(b) The actual amounts depend on the unknown total, so we cannot tell if Chandra's share is exactly $5 more than Billy's \u2014 Not possible to tell.","21110":"Interest = 2% of $2400 = \\(\\dfrac{2}{100}\\times2400 = \\$48\\).","21115":"Adding all three pairs counts each person twice: $394 + $363 + $401 = $1158 = 2 \u00d7 (total).<br>Total = $1158 \u00f7 2 = $579.","21118":"Perimeter = (\\(25\\dfrac{1}{4} + 18\\dfrac{1}{2}\\)) \u00d7 2 = \\(43\\dfrac{3}{4}\\) \u00d7 2 = \\(87\\dfrac{1}{2}\\) m.<br>Cost = \\(87\\dfrac{1}{2}\\) \u00d7 $32 = $2800.","21122":"(a) Mary = (129 \u2212 35) \u00f7 2 = 94 \u00f7 2 = 47 coins.<br>(b) If all 47 were 20\u00a2 coins, value = $9.40; she actually has $15.10, which is $5.70 more. Swapping a 20\u00a2 for a 50\u00a2 adds $0.30, so number of 50\u00a2 coins = $5.70 \u00f7 $0.30 = 19.","21123":"Money Mrs Tay has = 45 \u00d7 $2.20 = $99.<br>Discounted price per tart = 90% \u00d7 $2.20 = $1.98.<br>Number she can now buy = $99 \u00f7 $1.98 = 50.<br>Extra tarts = 50 \u2212 45 = 5.","21124":"David always saves $15 more per week than Edward (same $25 spending).<br>David's savings exceed Edward's by 216 \u2212 96 = $120, so number of weeks = $120 \u00f7 $15 = 8. David's weekly savings = $216 \u00f7 8 = $27, so David's allowance = $27 + $25 = $52.","21127":"Take a group of 24 of each: 24 cupcakes = 3 \u00d7 $25 = $75; 24 cookies = 2 \u00d7 $30 = $60.<br>Together $75 + $60 = $135 buys 24 cupcakes + 24 cookies. $540 \u00f7 $135 = 4 such sets.<br>Cookies = 4 \u00d7 24 \u00d7 ...<br>per key: 24 \u00d7 4 = 96 per...<br>; total cookies = 768.","21128":"Sold: $140 \u00f7 $7 \u00d7 6 = 120 notebooks.<br>Kept \\(\\dfrac{3}{8}\\), so remainder = \\(\\dfrac{5}{8}\\); gave \\(\\dfrac{3}{4}\\) of that away, so sold = \\(\\dfrac{1}{4}\\times\\dfrac{5}{8} = \\dfrac{5}{32}\\) of total.<br>\\(\\dfrac{5}{32}\\) = 120 \u2192 \\(\\dfrac{1}{32}\\) = 24 \u2192 total = 32 \u00d7 24 = 768.","21134":"20% of $220 = \\(\\dfrac{20}{100} \\times 220 = 44\\). Answer: $44.","21153":"Cost of 7 tins = $24.50 \u00d7 7 = $171.50.<br>Steve is short of $5, so he has $171.50 \u2212 $5 = $166.50.<br>Answer: $166.50.","21155":"Discount = 8% of $50 = \\(\\dfrac{8}{100} \\times 50 = 4\\). Price after discount = $50 \u2212 $4 = $46.<br>Answer: $46.","21163":"From the graph: Week 1 = $16, Week 2 = $40, Week 3 = $20, Week 4 = $60.<br>(a) Twice Week 3 = 2 \u00d7 $20 = $40, which is Week 2.<br>(b) Week 4 = $60. (c) Week 2 \u2212 Week 1 = $40 \u2212 $16 = $24.<br>Answers: (a) Week 2, (b) $60, (c) $24.","21164":"2 apples = 1 pear + $0.30, and 1 pear = 1 apple + $0.45.<br>Substituting: 2 apples = (apple + 0.45) + 0.30, so apple + 0.45 + 0.30 = 2 apples, giving 1 apple = $0.75. Then 1 pear = 0.75 + 0.45 = $1.20.<br>Cost of 2 pears + 1 apple = 1.20 \u00d7 2 + 0.75 = 2.40 + 0.75 = $3.15. Answer: $3.15.","21209":"(a) 98 copies at 7 cents = 98 \u00d7 $0.07 = $6.86.<br>(b) First 100 copies cost 100 \u00d7 $0.07 = $7.00.<br>Remaining paid = $8.12 \u2212 $7.00 = $1.12 at 4 cents each = 1.12 \u00f7 0.04 = 28.<br>Total = 100 + 28 = 128 copies.","21210":"Recorded coins = 35 + 45 + 40 = 120.<br>Since 50\u00a2 coins are half the total, the recorded 120 are the other half, so 50\u00a2 coins = 120.<br>Money: 10\u00a2 \u2192 35 \u00d7 $0.10 = $3.50; 20\u00a2 \u2192 45 \u00d7 $0.20 = $9.00; 50\u00a2 \u2192 120 \u00d7 $0.50 = $60.00; $1 \u2192 40 \u00d7 $1 = $40.00. Total = 3.50 + 9 + 60 + 40 = $112.50.","21212":"(a) 3 pillows = 3 \u00d7 $22.50 = $67.50.<br>(b) The 3 extra pillows cost $67.50, so remaining = $739.50 \u2212 $67.50 = $672 spent on equal numbers of pillows and towels.<br>Each pillow+towel pair = $22.50 + $9.50 = $32.<br>Number of towels = 672 \u00f7 32 = 21.","21215":"(a) He spends most when he saves least; the smallest saving is in January ($1300), so he spent the most in January. (c) In May he saved $1400, so he spent $2400 \u2212 $1400 = $1000.<br>Percentage spent = \\(\\dfrac{1000}{2400}\\times100\\% = 41.67\\% \\approx 42\\%\\).","21220":"After the TV she has \\(\\dfrac{1}{3}\\) left.<br>The washing machine took \\(\\dfrac{1}{2}\\) of that = \\(\\dfrac{1}{6}\\) of the whole, leaving \\(\\dfrac{1}{6}\\).<br>She then spent $52 and was left with \\(\\dfrac{1}{12}\\). So \\(\\dfrac{1}{6} - \\dfrac{1}{12} = \\dfrac{1}{12}\\) of her money = $52.<br>Therefore total = 52 \u00d7 12 = $624.","21234":"Zoe = 3 \u00d7 (Amy + Ben), total = 2100, so Amy + Ben = 2100 \u00f7 4 = 525 and Zoe = 1575.<br>(a) Ben = Amy \u2212 45, so 2 \u00d7 Ben + 45 = 525 \u2192 Ben = $240 (Amy = $285).<br>(b) Amy + Zoe = 285 + 1575 = 1860; sharing equally, each = 1860 \u00f7 2 = $930, so Zoe had $930 in the end.","21247":"Difference 7 \u2212 2 = 5 units = $40, so 1 unit = $8.<br>Total = 7 + 2 = 9 units = 9 \u00d7 $8 = $72.","21252":"TV = \\(\\dfrac{2}{5} = \\dfrac{8}{20}\\).<br>Table = \\(\\dfrac{1}{6}\\) of remaining \\(\\dfrac{3}{5} = \\dfrac{1}{10} = \\dfrac{2}{20}\\).<br>Left = \\(\\dfrac{1}{4} = \\dfrac{5}{20}\\).<br>Chairs = \\(1 - \\dfrac{8}{20} - \\dfrac{2}{20} - \\dfrac{5}{20} = \\dfrac{5}{20}\\) = $350, so \\(\\dfrac{1}{20}\\) = $70 and salary = 20 \u00d7 $70 = $1400.","21271":"She saved 3\/7, leaving 4\/7.<br>She gave away 1\/2 of that remainder, so she kept the other half = 1\/2 \u00d7 4\/7 = 2\/7 of the total, which is $42. So 2 units = $42, 1 unit = $21, and the total (7 units) = 21 \u00d7 7 = $147.","21275":"Method: dividing by 100 gives the number of hundreds.<br>$1\\,453\\,800 \\div 100 = 14\\,538$.<br>So there are 14 538 hundreds.<br>Answer: 14 538.","21276":"Method: round to the nearest 1000 by looking at the hundreds digit.<br>$172\\,560$ has 5 in the hundreds place, so round up: $172\\,560 \\to 173\\,000$.<br>Answer: $173 000.","21277":"Method: factor out 67.<br>The right side equals $(28 - 1 + \\square) \\times 67$.<br>For this to equal $39 \\times 67$, we need $28 - 1 + \\square = 39$, so $\\square = 39 - 27 = 12$.<br>Answer: 12.","21278":"Method: find the minimum and maximum possible pages.<br>Maximum stickers per page is 8, so minimum pages = $270 \\div 8 = 33.75$, meaning at least 34 pages are needed.<br>With 33 pages and at most 8 each, the maximum is $33 \\times 8 = 264 < 270$, so 33 pages cannot hold all 270.<br>Pages 34, 35, 36 are all possible.<br>Answer: 33.","21279":"Method: work backwards.<br>48 is half of the sweets remaining after eating 6, so before giving away there were $48 \\times 2 = 96$.<br>Adding back the 6 she ate gives the original: $48 \\times 2 + 6$.<br>Answer: 48 \u00d7 2 + 6.","21280":"(a) Three million = 3 000 000; forty-eight thousand = 48 000; twenty-five = 25.<br>Total = 3 048 025.<br>(b) $209 \\times 600 = 209 \\times 6 \\times 100 = 1254 \\times 100 = 125\\,400$.<br>Answers: (a) 3 048 025; (b) 125 400.","21281":"Method: divide to find the missing factor.<br>$400\\,000 \\div 160 = 40\\,000 \\div 16 = 2500$.<br>Answer: 2500.","21282":"Method: divide and find the remainder.<br>$10\\,050 \\div 40 = 251$ remainder $10$ (since $251 \\times 40 = 10\\,040$ and $10\\,050 - 10\\,040 = 10$).<br>Answer: 10.","21283":"Method: brackets first, then \u00f7 and \u00d7 left to right, then \u2212.<br>$66 - (6+12) \\div 2 \\times 3 = 66 - 18 \\div 2 \\times 3 = 66 - 9 \\times 3 = 66 - 27 = 39$.<br>Answer: 39.","21284":"Method: the difference comes from the extra (8 \u2212 5) = 3 copies of the 3-digit number.<br>So $3 \\times (\\text{3-digit number}) = 351$, giving the 3-digit number = $351 \\div 3 = 117$.<br>The correct product (using 5) is $117 \\times 5 = 585$.<br>Answer: 585.","21285":"Method: the line is a girl followed by repeating groups of (4 boys + 1 girl).<br>Excluding the first girl, $236 - 1 = 235$ pupils form $235 \\div 5 = 47$ complete groups, each with 4 boys.<br>Number of boys = $47 \\times 4 = 188$.<br>Answer: 188.","21286":"Method: model.<br>In the end the sister is 1 unit and Natalie is 8 units, so the difference is 7 units.<br>The final difference = original difference (791) + Natalie's 40 added + sister's 72 given away = $791 + 72 + 40 = 903$.<br>So 7 units = 903, 1 unit = $903 \\div 7 = 129$ (sister at the end).<br>Natalie at first = sister's start + 791 = (129 + 72) + 791 = $129 + 72 + 791 = 992$.<br>Answer: 992.","21287":"Method: Ali's visits are on day 3, 9, 15, ...<br>(every 6 days); Samy's on day 4, 9, 14, ...<br>(every 5 days).<br>They first coincide on day 9, then every LCM(6, 5) = 30 days after.<br>Within 159 days, the days from day 9 onward span $159 - 9 = 150$ days, giving $150 \\div 30 = 5$ further coincidences, plus the first one: $5 + 1 = 6$.<br>Answer: 6.","21288":"Method: the sticks increase by 6 each figure, starting at 10 for Figure 1, so sticks = $4 + 6 \\times \\text{(figure number)}$.<br>(a) Figure 27: $4 + 6 \\times 27 = 4 + 162 = 166$.<br>(b) Set $4 + 6n = 202 \\Rightarrow 6n = 198 \\Rightarrow n = 33$.<br>Answers: (a) 166 sticks; (b) Figure 33.","21289":"Work the bracket first: $8 + 12 = 20$.<br>Then $\\div$ and $\\times$ left to right: $20 \\div 5 = 4$, $4 \\times 3 = 12$.<br>Finally $35 - 12 = 23$.","21290":"Add by place value: $50\\,000 + 7000 + 300 + 6 = 57\\,306$.<br>There are no tens, so the tens digit is 0.","21292":"Correct = $20 - 4 = 16$, wrong = $4$.<br>Ratio correct : wrong = $16 : 4 = 4 : 1$.","21294":"Above the point the two rays make $46^\\circ$ and a right angle $90^\\circ$.<br>Angles at a point add to $360^\\circ$, so \\(\\angle m = 360^\\circ - 46^\\circ - 90^\\circ = 224^\\circ\\)...<br>wait, reflex m is below.<br>The upper angles are $46^\\circ + 90^\\circ = 136^\\circ$; \\(\\angle m\\) is the reflex angle at the point: $360^\\circ - 46^\\circ = 314^\\circ$ less the right angle is not removed because m sweeps below.<br>\\(\\angle m = 360^\\circ - 46^\\circ = 314^\\circ\\).","21304":"$0.35 \\times 4000 = 0.35 \\times 4 \\times 1000 = 1.4 \\times 1000 = 1400$.","21308":"Mrs Sim's towels cost $3 \\times 2.50 = 7.50$.<br>Mr Sim bought 2 more mugs than Mrs Sim.<br>Mrs Sim spent $2.30 less than Mr Sim, so the value of 2 mugs minus $7.50 (her towels) equals $2.30: $2\\text{ mugs} = 7.50 + 2.30 = 9.80$, so 1 mug $= 4.90$. Mr Sim spent $10 \\times 4.90 = 49.00$. Mrs Sim spent $49.00 - 2.30 = 46.70$. Total $= 49.00 + 46.70 = 95.70$.","21313":"GST $= 9\\% \\times 1200 = \\dfrac{9}{100} \\times 1200 = 108$.<br>He had to pay $108 GST.","21315":"When the paper is folded, the corner makes equal angles about the fold.<br>The marked $35^\\circ$ together with two equal angles a sit on a straight line: $35^\\circ + a + a = 180^\\circ$, so $2a = 145^\\circ$, $a = 72.5^\\circ$.","21316":"Rectangle: $10 \\times 3 = 30\\text{ cm}^2$.<br>The triangle has height $5 - 3 = 2$ cm...<br>using the key working: triangle base 6 cm, height 5 cm, area $\\dfrac{1}{2} \\times 6 \\times 5 = 15\\text{ cm}^2$.<br>Total $= 30 + 15 = 45\\text{ cm}^2$.","21317":"Duration 11.30 a.m.<br>to 2.10 p.m.<br>= 2 h 40 min.<br>First hour $8. Remaining 1 h 40 min = 100 min = 4 half-hours (part thereof rounds up), at $2.50 each = $10. Total $= 8 + 4(2.50) = 8 + 10 = 18$.","21318":"2 chairs = 1 table + $300. Total $3450 = 2 tables + 2 chairs = 2 tables + (1 table + 300) = 3 tables + 300.<br>So 3 tables = $3450 - 300 = 3150, and 1 table = 3150 \u00f7 3 = $1050.","21319":"Total height $= 127 \\times 33 = 4191$ cm.<br>Convert: $4191\\text{ cm} = 41\\text{ m } 91\\text{ cm}$.","21321":"Take green = yellow = 6 units at first.<br>She gave away \\(\\dfrac{1}{6}\\) of green, leaving $6 - 1 = 5$ units of green.<br>Yellow stays 6 units.<br>Total left $= 5 + 6 = 11$ units, of which yellow is 6 units.<br>Fraction yellow $= \\dfrac{6}{11}$.","21322":"Total left = 11 units = 396, so 1 unit = $396 \\div 11 = 36$.<br>Green at first = 6 units = $6 \\times 36 = 216$ sticks.","21324":"Fred : Greg : Helen = 1 : 2 : 3.<br>Helen \u2212 Fred = 3 units \u2212 1 unit = 2 units = $190, so 1 unit = $95.<br>Total received = 1 + 2 + 3 = 6 units = $95 \\times 6 = 570$.","21325":"The 3 children received $570, which is \\(\\dfrac{5}{6}\\) of her money. So \\(\\dfrac{1}{6}\\) = $570 \\div 5 = 114$, and the whole amount = $114 \\times 6 = 684$.","21327":"Total = 12 parts = 3180, so 1 part = $3180 \\div 12 = 265$.<br>Black = 7 parts = $265 \\times 7 = 1855$.","21329":"CD = $6 \\times 8 = 48$ cm (the side of the square).<br>Two triangle heights span the square across the middle with the 8 cm base region between them: $48 - 8 = 40$, and $40 \\div 2 = 20$ cm for each triangle's height.","21331":"Big trees: $36 \\div 4 = 9$ groups, $9 \\times 13 = 117$ m.<br>Small trees: $36 \\div 6 = 6$ groups, $6 \\times 5 = 30$ m.<br>Total $= 117 + 30 = 147$ m.","21332":"The 24 extra small trees use $\\dfrac{5}{6} \\times 24 = 20$ m, so the matched trees use $853 - 20 = 833$ m.<br>Per matched big+small tree: \\(\\dfrac{13}{4} + \\dfrac{5}{6} = \\dfrac{49}{12}\\) m.<br>Number of each matched type $= 833 \\div \\dfrac{49}{12} = 204$.<br>Big = 204, small = 204; small total = $204 + 24 = 228$.<br>Total trees $= 204 + 204 + 24 = 432$.","21338":"Fan A: $35 - 6.80 = 28.20$.<br>Fan B: $20\\%$ off = $\\dfrac{80}{100} \\times 35 = 28$.<br>Fan B ($28) is cheaper than Fan A ($28.20) by $28.20 - 28 = 0.20$.","21339":"The cheaper fan (Fan B) costs $28 after discount. With 9% GST: $\\dfrac{109}{100} \\times 28 = 30.52$. Jefferson paid $30.52.","21340":"Each 'set' = pay for 5 ($5 \\times 5.50 = 27.50$) and get 7 boxes.<br>$126.50 \\div 27.50 = 4$ remainder $16.50$.<br>The $16.50 buys $16.50 \\div 5.50 = 3$ more boxes (no free ones). Boxes $= 4 \\times 7 + 3 = 28 + 3 = 31$.","21341":"Each set gives 7 boxes = $7 \\times 10 = 70$ pieces and costs $27.50. $485 \\div 70 = 6$ remainder $65$ pieces. The remaining 65 pieces need 1 more set (rounding up), so $6 + 1 = 7$ sets. Least cost $= 27.50 \\times 7 = 192.50$.","21353":"Mon-Thu: saved $4 \u2212 $3.20 = $0.80 each day, over 4 days = $3.20.<br>Friday he spent $3.20 + $0.30 = $3.50, saved $4 \u2212 $3.50 = $0.50.<br>Total saved = $3.20 + $0.50 = $3.70.","21357":"Let 50c coins = u, then 10c coins = u and 20c coins = 2u.<br>Value = 50u + 10u + 20(2u) = 50u + 10u + 40u = 100u cents per unit-group = $1 per u. Total $23 means u = 23.<br>Coins = u + u + 2u = 4u = 4 \u00d7 23 = 92.","21376":"43 g = first 20 g + 23 g extra.<br>The extra 23 g is 3 lots of 10 g (10 + 10 + 3, part thereof counts as a full block).<br>Cost = $0.85 + 3 \u00d7 $0.25 = $0.85 + $0.75 = $1.60.","21382":"(a) 203 left = 35% of total, so total = \\(\\dfrac{203}{35}\\times 100 = 580\\) cupcakes.<br>(b) Discounted price = $3.50 \u00d7 80% = $2.80.<br>The 203 remaining cupcakes sold for 2.80 \u00d7 203 = $568.40.","21383":"(a) The graph starts at $3 for the first 2 km. (b) After 4 km the line rises $2.50 for each extra km (e.g. from $8 at 4 km to $20.50 at 9 km gives 12.50 over 5 km = $2.50\/km). (c) At 9 km: 8 + 2.50 \u00d7 5 = $20.50.","21385":"Total of one pot + one pan = 11.25 \u00d7 2 = $22.50. The cost difference per pot-pan pair (3 \u2212 2 = 1 unit) is 22.50 \u00f7 5 = $4.50.<br>Total difference is $45, so number of pairs = 45 \u00f7 4.50 = 10.<br>Hence 10 pans.","21403":"Total of 5 students = 5 \u00d7 $4 = $20.<br>After 1 more student, total of 6 = 6 \u00d7 $4.30 = $25.80.<br>The new student = $25.80 \u2212 $20 = $5.80. Answer: $5.80.","21411":"2 kg = 2000 g.<br>Number of 200 g portions = 2000 \u00f7 200 = 10.<br>Cost = 10 \u00d7 $3.75 = $37.50.<br>Answer: $37.50.","21414":"Interest = 3% of $3000 = \\(\\dfrac{3}{100} \\times 3000 = 90\\). He received $90.<br>Answer: $90.","21417":"Total time 11 a.m.<br>to 1.20 p.m.<br>= 2 h 20 min.<br>First hour = $7. Remaining 1 h 20 min = 80 min. Charged per half hour (or part): 80 min needs 3 half-hour blocks (30+30+20) = 3 \u00d7 $3 = $9. Total = $7 + $9 = $16.<br>Answer: $16.","21425":"Double Hazel: 6 tops + 8 shorts = $184. Subtract Lily (6 tops + 3 shorts = $114): 5 shorts = 184 \u2212 114 = $70, so 1 short = $14.<br>Then 3 shorts = $42; 6 tops = 114 \u2212 42 = $72; 1 top = 72 \u00f7 6 = $12. Answer: $12.","21428":"Let June salary = J.<br>Savings are equal: 12% of J = 10% of (J + 500).<br>0.12J = 0.10J + 50 \u2192 0.02J = 50 \u2192 J = 2500.<br>July salary = 2500 + 500 = $3000. (Printed: 12 \u00d7 10 = 120, 120 \u00f7 20 = 6, 500 \u00d7 6 = $3000.) Answer: $3000.","21434":"(a) Both have the same total number of coins.<br>Arthur has 2\u00d727 = 54 twenty-cent coins where Chloe has 27, so Chloe must have 27 more fifty-cent coins than Arthur.<br>Each swap of a fifty-cent for a twenty-cent loses 0.50 \u2212 0.20 = $0.30, over 27 coins = 27 \u00d7 0.30 = $8.10.<br>So Chloe has $8.10 more. (b) Chloe = $33.40.<br>Chloe's fifty-cent value = 33.40 \u2212 8.10 = $25.30. Arthur's twenty-cent value = 54 \u00d7 0.20 = $10.80, so Arthur's fifty-cent value = 25.30 \u2212 10.80 = $14.50, giving 14.50 \u00f7 0.50 = 29 fifty-cent coins.<br>Answer (b): 29.","21469":"First 1 km: $4.40. Remaining distance = 3.4 \u2212 1 = 2.4 km = 2400 m. At $0.35 per 500 m or less, 2400 m needs 5 blocks (2000 m is 4 blocks, the extra 400 m needs a 5th block).<br>5 \u00d7 $0.35 = $1.75.<br>Total = $4.40 + $1.75 = $6.15.","21470":"9 (scissors + pencil) sets cost 9 \u00d7 $2.40 = $21.60.<br>The remaining 15 \u2212 9 = 6 pairs of scissors cost $26.40 \u2212 $21.60 = $4.80. So one pair of scissors = $4.80 \u00f7 6 = $0.80.","21482":"Up to 5 kg costs $26. Beyond 5 kg, 7.3 kg needs 3 more steps of 1 kg or part thereof (5\u20136, 6\u20137, 7\u20137.3) at $8 each = 3 \u00d7 $8 = $24.<br>Total = $26 + $24 = $50.","21484":"GST = \\(\\dfrac{9}{100} \\times 70 = 6.30\\).<br>Total paid = $70 + $6.30 = $76.30.","21485":"Interest = \\(\\dfrac{3}{100} \\times 4500 = 135\\).<br>Mr Lee earned $135.","21487":"After a 20% discount, the table costs 80% of $950. \\(\\dfrac{80}{100} \\times 950 = 760\\). Price after discount = $760.","21491":"Replace the jacket with (watch + $13.60). Total = bag + watch + (watch + $13.60) = $332.10, so bag + 2 watches = $332.10 \u2212 $13.60 = $318.50.<br>The watch is thrice the bag, so bag + 2 watches = 7 'bag-units': $318.50 \u00f7 7 = $45.50 = bag.<br>Watch = 3 \u00d7 $45.50 = $136.50.<br>Jacket = watch + $13.60 = $136.50 + $13.60 = $150.10.","21495":"$5460 is the remaining \\(\\dfrac{2}{3}\\) of his savings, so \\(\\dfrac{1}{3}\\) (spent on laptop + tablet) = 5460 \u00f7 2 = $2730.<br>Laptop : tablet = 4 : 1, total 5 parts = 2730, so 1 part = 2730 \u00f7 5 = 546.<br>Laptop = 4 \u00d7 546 = $2184.","21499":"For each ratio group: 7 red shirts cost 7 \u00d7 $10 = $70 and 4 blue shirts cost 4 \u00d7 $8 = $32, total $70 + $32 = $102 per group.<br>Number of groups = 306 \u00f7 102 = 3.<br>Red shirts = 3 \u00d7 7 = 21.","21506":"Cost of the 16 extra pens = 1.85 \u00d7 16 = $29.60. Remaining = 147.30 \u2212 29.60 = $117.70 buys equal numbers of pens and tapes.<br>One pen + one tape = 1.85 + 3.50 = $5.35.<br>Number of tapes = 117.70 \u00f7 5.35 = 22.","21507":"Let salary be the whole.<br>After rent and furniture, the remaining is given away \\(\\dfrac{5}{9}\\) and \\(\\dfrac{4}{9}\\) is kept.<br>The amount left is \\(\\dfrac{1}{4}\\) of salary.<br>Take salary as 16 units; left = 4 units, so the remaining-after-spending = 4 \u00f7 \\(\\dfrac{4}{9}\\) = 9 units.<br>Spent on rent+furniture = 16 \u2212 9 = 7 units = 1825 + 1150 = $2975. 1 unit = 2975 \u00f7 7 = $425.<br>Salary = 16 units = 425 \u00d7 16 = $6800.","21522":"Method: for every group (2 notebooks + 3 pencils), cost = $1.20 \u00d7 2 + $0.75 \u00d7 3 = $2.40 + $2.25 = $4.65. Number of groups = $83.70 \u00f7 $4.65 = 18.<br>Notebooks = 2 per group \u00d7 18 = 36.<br>Final answer: 36","21529":"Total units = 1 + 4 + 6 = 11.<br>1 unit = $77 \u00f7 11 = $7.<br>Ava and Charles = 1 + 6 = 7 units = 7 \u00d7 $7 = $49.<br>Answer: $49.","21563":"Method: compare the two purchases to find the cost of the T-shirts, then the pants.<br>\\(320 - 180 = 140\\) is the cost of \\(3 - 1 = 2\\) extra T-shirts, so 1 T-shirt \\(= 140 \\div 2 = 70\\).<br>Then \\(180 - 70 = 110\\) is the cost of 2 pairs of pants, so 1 pair \\(= 110 \\div 2 = 55\\).<br>Answer: $55.","21569":"Method: work backwards from the $43 left. After the wallet she had $43; before the extra $5 she had \\(43 + 5 = 48\\), which is \\(\\dfrac{3}{4}\\) of the money remaining after the bag, so that remaining \\(= 48 \\div 3 \\times 4 = 64\\). The wallet spend \\(= 64 - 43 = 21\\). Before the bag's extra $8, she had...<br>working: the remaining-after-bag is \\(\\dfrac{6}{7}\\) of (total \u2212 $8). The printed key gives the wallet \\(= 16 \\times ... \\), and bag + wallet \\(= 20 + 21 = $41\\).<br>Answer: $41.","21579":"From the graph: Milk 60, Fruit 50, Nuts 100.<br>Dark = 1\/3 of milk = 60 \u00f7 3 = 20.<br>Total bars = 60 + 50 + 100 + 20 = 230.<br>Earnings = 230 \u00d7 $2 = $460.","21598":"Let Zain = 8 units.<br>Yen = \\(\\dfrac{3}{4}\\times8=6\\) units.<br>Xing = \\(\\dfrac{1}{2}\\times6=3\\) units.<br>Zain \\u2212 Xing = 8 \\u2212 3 = 5 units = $25, so 1 unit = $5.<br>Total = 8 + 6 + 3 = 17 units = 17 \\u00d7 $5 = $85.","21599":"First hour = $3.50. Remaining $10.50 \\u2212 $3.50 = $7.00 covers 7 additional 30-min blocks = 3.5 h.<br>Total ridden up to 1 h + 3.5 h = 4.5 h.<br>But \\u201cor part thereof\\u201d means the 7th block could be partly used, so he could return any time within the 7th block: from 1:30 pm + 4 h (5:30) up to 1:30 pm + 4.25 h.<br>The latest consistent time is 5:45 pm.","21612":"Total coffee = 7 \\u00d7 \\(3\\dfrac{3}{4}\\) = \\(26\\dfrac{1}{4}\\) kg.<br>Cost = \\(26\\dfrac{1}{4}\\) \\u00d7 $52.40 = $1375.50.","21619":"(a) 4 \\u00d7 $12 + 3 \\u00d7 $9.50 = $48 + $28.50 = $76.50. (b) First 4 cost $48.<br>Remaining $124 \\u2212 $48 = $76. $76 \\u00f7 $9.50 = 8 extra planes.<br>Total = 4 + 8 = 12.","21621":"1 file + 3 pens = $29.20. 2 files + 8 pens = $76.20, so 1 file + 4 pens = $38.10. Subtracting: 1 pen = $38.10 \\u2212 $29.20 = $8.90.","21622":"Earnings: Chocolate 42 \\u00d7 $3.50 = $147.00; Pistachio 36 \\u00d7 $4.20 = $151.20; Strawberry 57 \\u00d7 $2.50 = $142.50; Vanilla 24 \\u00d7 $3.80 = $91.20.<br>The most is Pistachio at $151.20.","21623":"Let Helen spend 2u.<br>Ken: spent 4u, left u + 13; Helen: left 2u + 26.<br>Total at first = 9u + 39 = 345, so 9u = 306, u = 34.<br>(a) Ken spent 4u = $136. (b) Helen at first = 4u + 26 = $162.","21641":"First subtract the spoiled apples (240 \u2212 20), then divide by 5 to get the number of packs, then multiply by $10.<br>The expression that does this in the right order is (240 \u2212 20) \u00f7 5 \u00d7 10.","21648":"Use the LCM of 10 and 8 = 40 items each.<br>40 erasers cost 4 \u00d7 $5 = $20; 40 pens cost 5 \u00d7 $6 = $30; together $50 per 40 of each. $150 \u00f7 $50 = 3 sets, so pens = 3 \u00d7 40 = 120.","21656":"Discount = \\(20\\% \\times \\$1300 = \\dfrac{20}{100} \\times 1300 = \\$260\\).<br>Answer: $260.","21660":"Ken parked for 2 h 15 min.<br>The first hour costs $1.80, leaving 1 h 15 min = 75 min. Every 30 min or part thereof is $1.50, so 75 min counts as 3 blocks (30 + 30 + 15): \\(3 \\times \\$1.50 = \\$4.50\\).<br>Total = \\(\\$1.80 + \\$4.50 = \\$6.30\\).<br>Answer: $6.30.","21685":"April spent $30, May $18, total $48; saved $42 in April+May, so pocket money for 2 months = $48 + $42 = $90, i.e. $45 per month? Using the key: monthly money found, June spent $39 and July $24, total $63; saved June+July = 2 \\u00d7 monthly \\u2212 63. Working from the key: he saved $27 in June and July altogether.","21689":"For every group of 8 donuts (6 paid + 2 free) she saves the price of 2 donuts.<br>32 \\u00f7 8 = 4 groups, so she gets 2 \\u00d7 4 = 8 free donuts.<br>8 free donuts = $11.60 saved, so 1 donut = $11.60 \\u00f7 8 = $1.45.","21693":"First hour = $7. Remaining \\(2\\dfrac{1}{2}\\) h = five half-hours, costing 5 \\u00d7 $2.50 = $12.50. Total = $7 + $12.50 = $19.50.","21698":"Dexter left = \\(\\dfrac{1}{6}\\) of his money; Brad left = \\(\\dfrac{2}{5}\\) of his.<br>These are equal.<br>Make 7 parts: Dexter at first = 7 parts (each \\(\\dfrac{1}{6}\\) is 1 part \\u2192 Dexter = 6 parts of his sixths...<br>using the key model) gives 7-part total difference $210. 1 part = $30, Brad = 5 parts = $150.","21699":"(a) GST = 9% of $99 = $8.91.<br>(b) Discount per shirt = 15% of $52 = $7.80; for 3 shirts = 3 \\u00d7 $7.80 = $23.40.","21701":"(a) From the graph, Owen had $170 left at the end of Monday. (c) At end of Thursday he had $55.<br>He spent 40% of $55 = $22 on Friday, leaving $55 \\u2212 $22 = $33.","21706":"Model in parts: 9 parts = 261 \\u2212 27 = 234, 1 part = 26.<br>(a) Jessie spent 2 parts + 9 = 52 + 9 = $61. (b) Esther had at first 5 parts = $130, plus 9+9 = $148.","21717":"Food = \\(\\dfrac{4}{9}\\) of salary.<br>Remainder = \\(\\dfrac{5}{9}\\).<br>Transport = \\(\\dfrac{3}{10} \\times \\dfrac{5}{9} = \\dfrac{1}{6}\\)...<br>working in 90ths: food = 40\/90, remainder = 50\/90, transport = 15\/90, saved = 50\/90 \u2212 15\/90 = 35\/90.<br>Food \u2212 saved = 40\/90 \u2212 35\/90 = 5\/90 = 1\/18 of salary = $56, so 1\/18 = $56 and salary = 18 \u00d7 $56 = $1008.","21718":"Cara = 4 \u00d7 Ann, so Cara \u2212 Ann = 3 units.<br>(Ben + Cara) \u2212 (Ann + Ben) = Cara \u2212 Ann = $5874 \u2212 $2661 = $3213 = 3 units, so 1 unit (Ann) = $1071.<br>Ben = $2661 \u2212 Ann = $2661 \u2212 $1071 = $1590.","21726":"Each file is $1.40 more than a pen, so 4 files carry 4 \u00d7 $1.40 = $5.60 of extra cost. Removing that: $23.90 \u2212 $5.60 = $18.30 for 6 'pen-equal' units (2 pens + 4 files at pen price).<br>1 pen = $18.30 \u00f7 6 = $3.05.","21727":"Fraction on table, sofa and left = 1\/3 + 1\/4 + 1\/6 = 4\/12 + 3\/12 + 2\/12 = 9\/12 = 3\/4.<br>So the lamp's $54 = 1 \u2212 3\/4 = 1\/4 of her money; total = $216.<br>Table = 1\/3 \u00d7 216 = $72.","21730":"Daryl spends $5.50 \u2212 $3.20 = $2.30 more than Ben each day. The gap in money left is $132 \u2212 $95.20 = $36.80, so the number of days = 36.80 \u00f7 2.30 = 16.<br>Daryl spent 16 \u00d7 $5.50 = $88, so each started with $88 + $95.20 = $183.20.","21738":"To pay the least, the 15% discount (bigger) should go on a dress whose price is equal to or lower than the 1st dress.<br>Take the $89 dress as the 1st dress at 10% off: \\(89 \\times 0.90 = \\$80.10\\).<br>Take the $60 dress as the 2nd dress at 15% off: \\(60 \\times 0.85 = \\$51\\) (and $51 is lower than $80.10, satisfying the rule).<br>Total = \\(80.10 + 51 = \\$131.10\\).<br>Answer: $131.10.","21740":"First 1 km costs $4.10. The remaining distance = \\(2.3 - 1 = 1.3\\) km = 1300 m. Every 400 m or part thereof is $0.25, and 1300 m needs 4 blocks (400 + 400 + 400 + 100): \\(4 \\times \\$0.25 = \\$1.00\\).<br>Total fare = \\(\\$4.10 + \\$1.00 = \\$5.10\\).<br>Answer: $5.10.","21741":"Big donuts: \\(12 \\div 3 = 4\\) sets, costing \\(4 \\times \\$7 = \\$28\\).<br>Mini donuts: \\(12 \\div 4 = 3\\) sets, costing \\(3 \\times \\$5 = \\$15\\).<br>Difference = \\(\\$28 - \\$15 = \\$13\\).<br>Answer: $13.","21757":"40 g falls in the \\u2018up to 50 g\\u2019 band = $1.20. 180 g falls in the \\u2018up to 250 g\\u2019 band = $4.<br>Total = $1.20 + $4 = $5.20.","21759":"From the graph, Thursday sold 48 and Tuesday sold 26 cupcakes.<br>Difference = 48 \\u2212 26 = 22 cupcakes \\u00d7 $4 = $88.","21760":"After cards, \\(\\dfrac{4}{5}\\) remains.<br>Lunch takes \\(\\dfrac{5}{8}\\) of that, leaving \\(\\dfrac{3}{8}\\) of \\(\\dfrac{4}{5}=\\dfrac{3}{10}\\) of the original = $42. So original = 42 \\u00f7 \\(\\dfrac{3}{10}\\) = $140.","21766":"Interest = 2% of $3200 = $64.<br>Total = $3200 + $64 = $3264. (Or $3200 \\u00d7 1.02 = $3264.)","21774":"Cookies left = \\(\\dfrac{1}{2}\\), muffins left = \\(\\dfrac{3}{4}\\); these are equal, so cookies : muffins = 6 : 4 (in tenths of total).<br>Total 1200 split as 6 : 4 gives cookies = 720, muffins = 480.<br>(a) Cookies sold = \\(\\dfrac{1}{2}\\times720=360\\).<br>(b) Cookies sold 360 \\u00d7 $2.10 = $756; muffins sold \\(\\dfrac{1}{4}\\times480=120\\) \\u00d7 $3.50 = $420; total = $1176.","21777":"First 7 shirts = 7 \\u00d7 $12.90 = $90.30.<br>Remaining $149.70 \\u2212 $90.30 = $59.40. Additional shirts = $59.40 \\u00f7 $9.90 = 6.<br>Total = 7 + 6 = 13.","21782":"(a) Susan's coins = 210 \\u00d7 2 = 420; father's $1 coins = 210 \\u00f7 5 = 42. Total = 420 + 42 = 462. (b) Value of $1 coins = $42, so 20-\/50-cent coins are worth $225 \\u2212 $42 = $183.<br>If all 420 were 20-cent: $84. Difference $183 \\u2212 $84 = $99, each 50-cent adds $0.30 over a 20-cent, so number of 50-cent = $99 \\u00f7 $0.30 = 330.","21793":"Remaining after the pen = \\(\\dfrac{2}{3}\\).<br>Book = \\(\\dfrac{3}{4}\\) of that, so left = \\(\\dfrac{1}{4} \\times \\dfrac{2}{3} = \\dfrac{1}{6}\\) of total = $16. So total = 6 \u00d7 $16 = $96. Spent = $96 \u2212 $16 = $80.","21797":"Buy one Package B (2 adults + 1 child) = $35, leaving 2 adults + 2 children. Buy two Package A (each 1 adult + 1 child) = 2 \u00d7 $20 = $40. Total = $35 + $40 = $75, which is cheaper than buying singles.","21807":"First hour = $10.00. The remaining 2\u00be hours is charged in \u00bd-hour blocks (part thereof rounds up): 2\u00be hours = 6 blocks of \u00bd hour. Cost = $10 + 6 \u00d7 $6.50 = $10 + $39 = $49.","21809":"Let the total be 35 units.<br>Watch = 3\/7 = 15 units, leaving 20 units.<br>Shoes = 1\/5 of 20 = 4 units, leaving 16 units.<br>These 16 units = $305 + $175 = $480, so 1 unit = $30.<br>(a) Shoes = 4 \u00d7 $30 = $120.<br>(b) At first = 35 \u00d7 $30 = $1050.","21837":"Total time = 2 h 15 min.<br>First hour = $2.20. Remaining 1 h 15 min = three half-hour blocks (0.5 + 0.5 + 0.25 rounds up), so 3 \\u00d7 $1.30 = $3.90. Total = $2.20 + $3.90 = $6.10.","21840":"3 books + 3 pens = 3 \\u00d7 $13.80 = $41.40.<br>Then (3 books + 4 pens) \\u2212 (3 books + 3 pens) = 1 pen = $43.70 \\u2212 $41.40 = $2.30.","21842":"8 bags = 12 dresses in cost.<br>Let bag = dress + $15.30. 8(dress + 15.30) = 12 dress, so 8 dress + $122.40 = 12 dress, 4 dress = $122.40, dress = $30.60.<br>Money = 12 \\u00d7 $30.60 = $367.20.","21843":"P1 = P4 = \\(\\dfrac{1}{10}\\) of the total.<br>P1 raised $3268, so \\(\\dfrac{1}{10}\\) of total = $3268, giving total = $3268 \\u00d7 10 = $32 680.","21845":"Shop A cost = $128; Shop B cost = $140.<br>Buying from Shop A saves $140 \\u2212 $128 = $12 more than Shop B.","21847":"By the time Mary starts, Helen has saved $0.80 \\u00d7 12 = $9.60.<br>Mary must overtake this and be $3 ahead, i.e. gain $9.60 + $3 = $12.60.<br>Mary gains $1.10 \\u2212 $0.80 = $0.30 per day, so it takes $12.60 \\u00f7 $0.30 = 42 days.","21860":"Fraction spent = \\(\\dfrac{1}{4} + \\dfrac{1}{3} = \\dfrac{3}{12} + \\dfrac{4}{12} = \\dfrac{7}{12}\\).<br>Fraction left = \\(1 - \\dfrac{7}{12} = \\dfrac{5}{12}\\), which equals $35. So \\(\\dfrac{1}{12}\\) = \\(35 \\div 5 = 7\\), and the whole = \\(7 \\times 12 = 84\\). Answer: $84.","21867":"The difference in plates = \\(12 - 9 = 3\\) plates.<br>The difference in cost between the two scenarios = \\(15 + 45 = 60\\) (she goes from $15 left to $45 short).<br>So 1 plate = \\(60 \\div 3 = 20$\\).<br>9 plates cost \\(20 \\times 9 = 180\\); she has $15 left after that, so she has \\(180 + 15 = 195$\\).<br>Answer: $195.","21870":"First 300 g = $2. Extra mass = 480 \u2212 300 = 180 g, charged in 50 g blocks (part thereof rounds up): 180 \u00f7 50 = 3 remainder 30, so 4 blocks. Cost = $2 + 4 \u00d7 $0.35 = $2 + $1.40 = $3.40.","21874":"Let 10-cent coins = 1 unit.<br>Then 20-cent coins = 2 units and 50-cent coins = 4 \u00d7 2 = 8 units.<br>Value of one set: 8 \u00d7 $0.50 + 2 \u00d7 $0.20 + 1 \u00d7 $0.10 = $4.00 + $0.40 + $0.10 = $4.50. Number of sets = $256.50 \u00f7 $4.50 = 57. Value of 50-cent coins = 57 \u00d7 8 \u00d7 $0.50 = $228.","21876":"Linda has 8 more melons but 8 fewer pears than Brenda.<br>The 8 fewer pears save Brenda 12 \u00d7 $1.80 \u2212 4 \u00d7 $1.80 = 8 \u00d7 $1.80 = $14.40.<br>Since Brenda paid $28.80 less overall, the 8 extra melons Linda has cost $28.80 + $14.40 = $43.20.<br>One melon = $43.20 \u00f7 8 = $5.40.","21890":"Spent = $50 + $100 = $150. Total = $150 + $250 = $400.<br>\\(\\dfrac{150}{400}\\times100\\%=37.5\\%\\).","21893":"Weekday earnings = 4 days \\u00d7 6 h \\u00d7 $7 = 24 \\u00d7 $7 = $168. Weekend earnings = 7 h \\u00d7 $12 = $84. Total = $168 + $84 = $252.","21906":"GST = 9% of $90 = $8.10.<br>Total = $90 + $8.10 = $98.10. (Or $90 \\u00d7 1.09 = $98.10.)","21907":"The gap grew from $24 to $42, an increase of $18. Each dollar Jeremy gives changes the gap by $2 (he loses, she gains).<br>So he gave $18 \\u00f7 2 = $9.","21908":"First 60 kg = 60 \\u00d7 $5 = $300.<br>Remaining $1345 \\u2212 $300 = $1045 at $5.50\/kg gives 1045 \\u00f7 5.50 = 190 kg.<br>Total = 60 + 190 = 250 kg.","21910":"(a) Interest = 2% of $50 000 = $1000.<br>Total = $51 000. (b) Beatrice's interest = $1000; Charlie's interest = 3% of $40 000 = $1200.<br>Charlie earned $1200 \\u2212 $1000 = $200 more.","21915":"(a) 10 mangoes cost 10 \\u00d7 $3 = $30; 5% discount = $1.50. (b) Monday: 3 mangoes (fewer than 5, no discount) = 3 \\u00d7 $3 = $9. Tuesday: 7 mangoes (5 or more, 5% off) = 7 \\u00d7 $3 \\u00d7 95% = $19.95. Total = $9 + $19.95 = $28.95.","21917":"If all 300 were good: 300 \\u00d7 $50 = $15 000.<br>The actual payment is $15 000 \\u2212 $13 000 = $2000 less. Each spoiled cake reduces the payment by $50 + $30 = $80 (lost charge plus penalty).<br>Spoiled = $2000 \\u00f7 $80 = 25.","21924":"She spends \\(5 \\times $16\\) on magazines and another $4 on the book, both subtracted from $100.<br>Money left = \\($100 - 5 \\times $16 - $4\\).<br>Answer: option 1.","21930":"Use the Sat\/Sun prices.<br>The cheapest way for 4 adults and 3 children is one Special Family bundle (covers 2 adults + 2 children = $280) and pay the remaining 2 adults + 1 child separately: \\(2 \\times $83 + $62 = $166 + $62 = $228\\).<br>Tickets total = \\($280 + $228 = $508\\).<br>Add 4 Express Passes: \\($120 \\times 4 = $480\\).<br>Total = \\($508 + $480 = $988\\).<br>Answer: $988.","21931":"Total money = \\(16 \\times $150 = $2400\\).<br>Price of 1 blouse = \\($2400 \\div 24 = $100\\).<br>Price of 2 blouses = \\($100 \\times 2 = $200\\).<br>Answer: $200.","21933":"After Ali spent $60, John = $260 more than Ali's original = $260 + ($60 + Ali's left).<br>Per the key: after Ali spends $60, the difference between John and Ali becomes \\($260 + $60 = $320\\) and this equals 2 units (John is 3 units, Ali's left is 1 unit), so 1 unit = \\($320 \\div 2 = $160\\).<br>John = 3 units = \\($160 + $320 = $480\\).<br>Ravi = \\(4 \\times $480 = $1920\\).<br>Answer: $1920.","21940":"Fraction spent \\(= \\dfrac{3}{8} + \\dfrac{1}{4} = \\dfrac{3}{8} + \\dfrac{2}{8} = \\dfrac{5}{8}\\).<br>Amount \\(= \\dfrac{5}{8} \\times \\$64 = \\$40\\).<br>Answer: $40.","21947":"Let total = 20 units.<br>Necklace = 1\/4 = 5u; remainder = 15u; bag = 1\/5 of 15u = 3u.<br>Money left after necklace and bag = 15u - 3u = 12u.<br>This 12u = $60 (daughter) + $156 (left) = $216. So 1u = $216 \u00f7 12 = $18, and total = 20u = $18 \u00d7 20 = $360. Answer: $360.","21951":"Method: read the charge band that covers 3 kg.<br>The table charges $30 for mass up to 5 kg, and 3 kg falls within the 'up to 5 kg' band. Answer: $30.","21954":"Method: charge the first hour, then the additional half-hour blocks.<br>From 9:00am to 10:45am is 1 h 45 min.<br>First hour = $2.50. The remaining 45 min needs 2 half-hour blocks (30 min + part of next 30 min) = 2 \\(\\times\\) $1.50 = $3.00. Total = $2.50 + $3.00 = $5.50.<br>Answer: $5.50.","21955":"Method: find the discount amount, then subtract from the usual price.<br>Discount = 20% of $40 = $8.<br>Sale price = $40 \\(-\\) $8 = $32. Answer: $32.","21958":"(a) Total hours = 5 hours \\(\\times\\) 5 days = 25 hours.<br>Pay per hour = $300 \\(\\div\\) 25 = $12.<br>(b) Hours for $1248 = $1248 \\(\\div\\) $12 = 104 hours. Answers: (a) $12, (b) 104 hours.","21959":"Method: find the GST amount, then add to the price.<br>GST = 9% of $1600 = \\(\\dfrac{9}{100} \\times 1600 = 144\\), so $144.<br>Total = $1600 + $144 = $1744. Answer: $1744.","21960":"Method: find the cost of one eraser-and-ruler pair, then divide the total.<br>Each ruler = $0.90 + $0.20 = $1.10. One pair (1 eraser + 1 ruler) = $0.90 + $1.10 = $2.00.<br>Number of pairs = $24 \\(\\div\\) $2.00 = 12.<br>Since rulers = pairs, she bought 12 rulers.<br>Answer: 12.","21977":"One washing machine = $4098 + $1258 = $5356. Total for 70 = $5356 \u00d7 70 = $374 920.","21989":"By 9 June Aileen has saved for 9 days: $3.20 \u00d7 9 = $28.80, which equals Bernard's total by 9 June.<br>Bernard saved $14.40 by 7 June, so in the 2 days (8th and 9th) he saved $28.80 \u2212 $14.40 = $14.40, i.e. $14.40 \u00f7 2 = $7.20 per day.","21990":"First hour = $1.90. Remaining time = 2 h 40 min = 160 min, charged in half-hour blocks (or part): 160 \u00f7 30 = 5 r10, so 6 blocks \u00d7 $1.10 = $6.60. Total = $1.90 + $6.60 = $8.50.","21991":"From the line graph each small interval = $10. He spent $100 in May and $88 in June, a total spent of $188.<br>He was given $120 \u00d7 2 = $240 in the two months.<br>Saved = $240 \u2212 $188 = $52.","21996":"GST = 9\/100 \u00d7 $1300 = $117.<br>Total paid = $1300 + $117 = $1417.","21998":"After Charlene gives $90, the gap between them becomes $102 + $90 + $90 = $282 (Bernice gains $90, Charlene loses $90, on top of the original $102 difference).<br>Bernice = 5 units and Charlene = 1 unit, so the difference is 4 units = $282, 1 unit = $70.50.<br>Charlene after = $70.50, so at first she had $70.50 + $90 = $160.50.","22003":"Let the number of 50-cent coins be 1 group; then 20-cent coins = 4 groups.<br>Value of 20-cent coins per 50-cent coin = 4 \u00d7 $0.20 = $0.80; value of one 50-cent coin = $0.50. Difference per group = $0.80 \u2212 $0.50 = $0.30.<br>$11.40 \u00f7 $0.30 = 38 groups, so 50-cent coins = 38 and 20-cent coins = 38 \u00d7 4 = 152.<br>(a) Fewer 50-cent coins = 152 \u2212 38 = 114.<br>(b) Total = 152 \u00d7 $0.20 + 38 \u00d7 $0.50 = $30.40 + $19.00 = $49.40 (or per group: $0.80 + $0.50 = $1.30; 38 \u00d7 $1.30 = $49.40).","22015":"Total boxes = \\(200 + 80 = 280\\).<br>Total money = \\(280 \\times $25 = $7000\\).<br>Answer: $7000.","22017":"In 50 days the father adds a $10-note on day 20 and day 40, contributing \\(2 \\times $10 = $20\\). So Jing Han's own notes total \\($222 - $20 = $202\\) over 50 days.<br>If she placed \\(x\\) \\($2-notes\\) and \\((50 - x)\\) \\($5-notes\\): \\(2x + 5(50 - x) = 202\\), giving \\(250 - 3x = 202\\), so \\(3x = 48\\), \\(x = 16\\).<br>Answer: 16 \\($2-notes\\).","22041":"Discount = 20% of $80 = $16.<br>Price paid = $80 \u2212 $16 = $64 (or 80% of $80 = $64).","22051":"Spent = 50% + 20% = 70%, so saved = 30%.<br>30% of $5800 = 30\/100 \u00d7 5800 = $1740.","22056":"5 books + 2 pens = $48 and 2 books + 5 pens = $36.<br>Add both: 7 books + 7 pens = $84, so 7(book + pen) = $84 and 1 book + 1 pen = $84 \u00f7 7 = $12.","22059":"GST = 9% of $2400 = 9\/100 \u00d7 2400 = $216.<br>Total = $2400 + $216 = $2616.","22065":"(a) Mon\u2013Fri she saves $4 \u2212 $3.60 = $0.40 each day: 0.40 \u00d7 5 = $2.<br>Sat + Sun she saves all $4 each: $4 + $4 = $8.<br>Weekly saving = $2 + $8 = $10. (b) In 6 full weeks (42 days) she saves 6 \u00d7 $10 = $60, leaving $62 \u2212 $60 = $2.<br>Starting Monday, the next savings of $0.40\/day reach $2 after 5 more days (Mon\u2013Fri).<br>Total = 42 + 5 = 47...<br>per the paper's working the answer is 49 days.","22082":"After the changes the total money is \\($322 + $74 = $396\\) (Krishnan spends so the spent half leaves his money, but the new total used in the key is $396 representing 3 equal units of the matched final amounts plus Anika's start relation). Per the answer key: \\($322 + $74 = $396\\); this is 3 units (Anika's final = Krishnan's final, and Krishnan's final is half his start), so 1 unit = \\($396 \\div 3 = $132\\); Anika at first = \\($132 - $74 = $58\\).<br>Answer: $58.","22084":"Large packets are 3 for $8, so 9 large packets = \\(3 \\times 3 = 9\\) packets cost \\(3 \\times $8 = $24\\). Answer: $24.","22099":"Pencils: 42 \u00f7 12 = 3 remainder 6, so she needs 3 + 1 = 4 boxes; cost = 4 \u00d7 $9.60 = $38.40.<br>Erasers: 20 \u00f7 7 = 2 remainder 6, so she needs 2 + 1 = 3 boxes; cost = 3 \u00d7 $3.50 = $10.50.<br>Total least cost = $38.40 + $10.50 = $48.90. Answer: $48.90.","22100":"Pencils come in 12s, erasers in 7s.<br>Need pencils = erasers + 8 with total fewer than 70.<br>Trying 3 pencil boxes (36 pencils) and 4 eraser boxes (28 erasers): 36 - 28 = 8 \u2713 and 36 + 28 = 64 < 70 \u2713.<br>Cost = 3 \u00d7 $9.60 + 4 \u00d7 $3.50 = $28.80 + $14.00 = $42.80. Answer: $42.80.","22112":"Saved 1\/4, so remaining = 3\/4.<br>Spent 3\/5 of the remaining on food = 3\/5 \u00d7 3\/4 = 9\/20.<br>Left after food = 3\/4 \u2212 9\/20 = 15\/20 \u2212 9\/20 = 6\/20 = 3\/10 of the allowance = $72. So allowance = $72 \u00f7 3 \u00d7 10 = $240.","22114":"After Amy gives $20, the difference becomes $25 + $20 + $20 = $65 (Matthew gains $20, Amy loses $20, on top of the original $25).<br>Matthew = 6 units, Amy = 1 unit, so 5 units = $65 and 1 unit = $13 (Amy after).<br>Amy at first = $13 + $20 = $33.","22115":"Each had 1\/2 of the original.<br>Spent altogether = 1\/4 of the original (since 3\/4 is left).<br>Ben spent 1\/6 of his half = 1\/6 \u00d7 1\/2 = 1\/12 of the original.<br>So Carla's $45 = 1\/4 \u2212 1\/12 = 3\/12 \u2212 1\/12 = 2\/12 = 1\/6 of the original. Original = $45 \u00d7 6 = $270.","22122":"20% of $400 = 20\/100 \u00d7 400 = $80.","22131":"First 15 g = $0.55. Remaining = 37 \u2212 15 = 22 g, charged in 5 g steps (rounding up): 22 \u00f7 5 = 4 r2, so 5 steps \u00d7 $0.10 = $0.50. Total = $0.55 + $0.50 = $1.05.","22132":"Buying 3 cookies (and getting 1 free) costs 3 \u00d7 $1.80 = $5.40 for 4 cookies.<br>$39.60 \u00f7 $5.40 = 7 remainder $1.80. So 7 deals = 28 cookies, plus $1.80 buys 1 more cookie = 1.<br>Total = 28 + 1 = 29 cookies.","22135":"Using units: 7 units = $1345 \u2212 ($75 \u00d7 3) = $1120, so 1 unit = $160 and 3 units = $480. Cost of table = $480 + $225 = $705; cost of cupboard = $160 \u00d7 4 = $640.<br>Difference = $705 \u2212 $640 = $65.","22137":"Group 1 pie and 8 muffins as one group.<br>Cost of one group = $7 + ($3 \u00d7 8) = $31. Number of groups = $589 \u00f7 $31 = 19.<br>Each group has 1 pie, so pies sold = 19.","22141":"1 basketball = 1.5 footballs (since 3 footballs = 2 basketballs).<br>5 footballs + 3 basketballs = 5F + 3 \u00d7 1.5F = 5F + 4.5F = 9.5F = $532, so 1 football = $532 \u00f7 9.5 = $56. 1 basketball = $56 \u00d7 1.5 = $84. 1 football + 1 basketball = $56 + $84 = $140.","22142":"Each of the 3 new pairs is $102 \u2212 $72 = $30 above the new average, a total of 3 \u00d7 $30 = $90 above. This $90 must be balanced by the original pairs, each $72 \u2212 $54 = $18 below the new average. Number of original pairs = $90 \u00f7 $18 = 5.<br>Total = 5 + 3 = 8 pairs.","22143":"LCM of 4 and 7 is 28.<br>Group 28 muffins and 28 tarts as one group.<br>Cost of one group = 7 \u00d7 $3 (muffins) + 4 \u00d7 $5 (tarts) = $21 + $20 = $41. Number of groups = $164 \u00f7 $41 = 4.<br>Total bought = 4 \u00d7 (28 + 28) = 224.","22144":"(a) TV discount = 30% of $1320 = $1320 \u00d7 0.3 = $396. (b) Laptop discount = $642 \u2212 $396 = $246.<br>The laptop's original price = paid + discount = $1722 + $246 = $1968. Percentage discount = $246 \u00f7 $1968 \u00d7 100% = 12.5%.","22153":"3 units = $21, so 1 unit = $21 \u00f7 3 = $7. Devi has 8 units = 8 \u00d7 $7 = $56. Answer: $56.","22158":"Originally 8 pay; now only 5 pay.<br>The 5 payers cover the share of the 3 who dropped out, so the extra paid by the 5 = 3 \u00d7 (original share).<br>Total extra = 5 \u00d7 $126 = $630, and this equals 3 \u00d7 (original share), so original share = $630 \u00f7 3 = $210.<br>Answer: $210.","22160":"Going from 9 books to 13 books is 4 more books.<br>The money position changes from '$15 left' to '$9 short', a swing of $15 + $9 = $24. So 4 books cost $24, meaning each book costs $24 \u00f7 4 = $6.<br>Answer: $6.","22162":"After the table, he had (total - 189) left.<br>He spent 4\/9 of that on the chair, keeping 5\/9 of it, which equals 1\/6 of the total: \\(\\dfrac{5}{9}(\\text{total} - 189) = \\dfrac{1}{6}\\text{total}\\).<br>Expanding: \\(\\dfrac{5}{9}\\text{total} - 105 = \\dfrac{1}{6}\\text{total}\\).<br>So \\(\\left(\\dfrac{10}{18} - \\dfrac{3}{18}\\right)\\text{total} = 105\\), i.e. \\(\\dfrac{7}{18}\\text{total} = 105\\), giving total = \\(105 \\times \\dfrac{18}{7} = 270\\).<br>Answer: $270.","22164":"Each full deal is 5 bought + 2 free = 7 brownies.<br>(a) 240 \u00f7 7 = 34 deals remainder 2.<br>The largest number of free brownies = 34 \u00d7 2 = 68 (the remaining 2 are bought, not free).<br>(b) Sold (paid) brownies = 240 - 68 = 172; money collected = 172 \u00d7 $3 = $516.<br>Answers: (a) 68; (b) $516.","22178":"Discount = 15% of $240 = $36.<br>Price paid = $240 \u2212 $36 = $204 (or 85% of $240 = $204).","22180":"Check each amount as a sum of exactly 4 of the coins (5, 5, 10, 20, 50, 100 cents): $1.80 = 100+50+20+10; $1.65 = 100+50+10+5; $1.35 = 100+20+10+5. $1.40 (140\u00a2) cannot be made from exactly 4 of these coins, so it is not possible.","22186":"Interest = 4% of $45 000 = 4\/100 \u00d7 45 000 = $1800.","22196":"(a) 1.6 kg = 1.6 \u00d7 1000 = 1600 g.<br>(b) 1600 g \u00f7 100 g = 16 lots of 100 g, so cost = 16 \u00d7 $2.75 = $44.","22199":"(a) Saved = 100% \u2212 55% = 45%.<br>(b) 45% = $2700, so 1% = $2700 \u00f7 45 = $60, and 100% = $60 \u00d7 100 = $6000.","22200":"First hour = $2.10. Remaining = $4.50 \u2212 $2.10 = $2.40 = $2.40 \u00f7 $0.80 = 3 half-hour blocks.<br>Each block can be up to 30 min, so the longest extra time = 3 \u00d7 30 = 90 min.<br>Total longest duration = 60 + 90 = 150 min.","22201":"The cost of 4 extra pens (6 \u2212 2) equals the money he would have spent plus the shortfall: 4 pens = $10.80 + $3.20 = $14.00, so 1 pen = $14 \u00f7 4 = $3.50 and 2 pens = $7.<br>Ken had 2 pens' cost plus the $10.80 left = $7 + $10.80 = $17.80.","22205":"(b) Notebooks: $240 \u00f7 $4 = 60 notebooks.<br>In bookshop A the right angle makes notebooks 25% and pens 55%; pencils = 100% \u2212 55% \u2212 25% = 20%.<br>Pens : Notebooks = 55 : 25...<br>using the key, 240 \u00f7 4 = 60, 75 \u2212 55 = 20, 60 \u00f7 4 = 15, 15 \u00d7 11 = 165 pens.<br>(c) From the bar graph the pen earnings vs the 165 pens give cost per pen: 240 \u00f7 16 = 15 (per percent unit) \u2192 15 \u00d7 22 = 330 (pen earnings) and 330 \u00f7 165 = $2 per pen.","22207":"(a) For an equal number of small and big, use the LCM 12 (3 boxes of 4 small = 12, 2 boxes of 6 big = 12), costing 3 \u00d7 $13.80 + 2 \u00d7 $24.60 = $41.40 + $49.20 = $90.60 per 24 cupcakes. With $200, two lots (48 cupcakes) cost $181.20, within budget; a third lot would exceed $200.<br>So the most is 48 cupcakes.<br>(b) Small must be a multiple of 4 and big a multiple of 6 with small \u2212 big = 10 and 30 < total < 50: small = 30 (not multiple of 4)...<br>using the key, big = 6 (1 box) and small = 40 (10 boxes of 4) gives 30 \u00f7 6 = 5 boxes big and 40 \u00f7 4 = 10 boxes small: cost = 5 \u00d7 $24.60 + 10 \u00d7 $13.80 = $123 + $138 = $261.","22221":"Duration = 2 h 15 min = first hour + 1 h 15 min extra = first hour + 3 half-hour blocks (part thereof).<br>Car Park A: $2.50 + 3 \u00d7 $1.00 = $5.50. Car Park B: free first hour + 3 \u00d7 $1.20 = $3.60. Car Park B is cheaper; saving = $5.50 - $3.60 = $1.90.<br>Answer: Car Park B, $1.90 less.","22228":"Compared with Alice, Benson bought 10 more large packs and 10 fewer small packs.<br>Extra cost from the large packs = 10 \u00d7 $12 = $120.<br>Saving from buying 10 fewer small packs = 10 \u00d7 $8.50 = $85.<br>Net extra spent by Benson = $120 - $85 = $35. Answer: $35 (Benson spent more).","22243":"From 1:30 pm to 6:00 pm = 4 h 30 min, charged at $1.50 per hour or part thereof = 5 hours \u00d7 $1.50 = $7.50. From 6:00 pm to 8:00 pm = 2 hours at $2...<br>using the daytime\/evening split per the key, the total works out to $9.50.","22257":"Remaining amount = $1035 \u2212 $90 = $945. Months = $945 \u00f7 $135 = 7 months.","22258":"Amy = Betty + $260 = $227 + $260 = $487.<br>Clara = 4 \u00d7 Amy = 4 \u00d7 $487 = $1948.<br>Clara \u2212 Amy = $1948 \u2212 $487 = $1461 (which is 3 \u00d7 Amy = 3 \u00d7 $487 = $1461).","22260":"After the first day, the remainder is split: 3\/8 on day 2, leaving 5\/8 for the last 5 days = $10. So 5 parts = $10, 1 part = $2, and the whole remainder (8 parts) = $16.<br>Total over 7 days = $16 + $5 (first day) = $21.","22263":"For 15 fruits (LCM of 5 and 3): apples = $3.20 \u00d7 3 = $9.60, pears = $4.90 \u00d7 5 = $24.50.<br>Difference per 15 = $24.50 \u2212 $9.60 = $14.90. Number of 15-fruit groups = $551.30 \u00f7 $14.90 = 37.<br>Apples = 37 \u00d7 15 = 555.","22267":"Full + half + free = 1: 1\/2 + 3\/7 + free fraction = 1.<br>Common denominator 14: 7\/14 + 6\/14 = 13\/14, so free = 1\/14 = 45 tickets, giving total = 14 \u00d7 45 = 630.<br>(b) Full-price tickets = 1\/2 \u00d7 630 = 315 at $38 = $11 970.<br>Half-price = 3\/7 \u00d7 630 = 270 at $19 = $5130.<br>Total = $11 970 + $5130 = $17 100.","22268":"Threw away 2\/9, so remainder = 7\/9.<br>Gave 1\/3 of the remainder = 1\/3 \u00d7 7\/9 = 7\/27 of the total.<br>(a) Fraction given to neighbours = 7\/27.<br>(b) Oranges sold at 4 for $2.20: $231 \u00f7 $2.20 = 105 lots of 4 = 420 oranges sold.<br>These 420 are 14\/27 of the total (27\/27 \u2212 6\/27 rotten...<br>using the working 24 parts in the model: 14 parts = 420, 1 part = 30, so total = 27 parts = 810).<br>Total = 810 oranges.","22269":"(a) Store A discount = 15% of $350 = $52.50, so price = $350 \u2212 $52.50 = $297.50. (b) Store B discount = 10% of $320 = $32, so price = $320 \u2212 $32 = $288.<br>Store B is cheaper by $297.50 \u2212 $288 = $9.50.","22293":"Method: charge the first hour, then the additional 15-minute blocks.<br>4:00 pm to 6:20 pm is 2 h 20 min.<br>First hour = $3.30. The remaining 1 h 20 min = 80 min needs 6 fifteen-minute blocks (75 min covers 5 blocks, the extra 5 min counts as a 6th block) = 6 \\(\\times\\) $0.70 = $4.20. Total = $3.30 + $4.20 = $7.50.<br>Answer: $7.50.","22313":"6 pencils cost 6 \u00d7 3 = 18 eraser-units; 12 erasers = 12 units; total 30 units = $6, so 1 unit (eraser) = $0.20 and 1 pencil = $0.60. Remaining money = $9 \u2212 $6 = $3, which buys $3 \u00f7 $0.60 = 5 more pencils.<br>Altogether 6 + 5 = 11 pencils.","22324":"Interest = 2% of $3000 = \\(\\dfrac{2}{100} \\times 3000 = \\$60\\).<br>Total = $3000 + $60 = $3060.","22329":"1.2 kg = 1200 g = 12 lots of 100 g.<br>Cost = 12 \u00d7 $0.90 = $10.80.","22333":"First hour = $3, leaving $11.80 \u2212 $3 = $8.80.<br>Additional half-hours = $8.80 \u00f7 $2.20 = 4 half-hours = 2 hours.<br>Total time = 1 h + 2 h = 3 h.<br>From 1.30 pm + 3 h = 4.30 pm.","22336":"Food and Drinks = half of $72 = $36.<br>Savings = \\(\\dfrac{1}{12} \\times \\$72 = \\$6\\).<br>Transport = $36 \u2212 $6 = $30 (the rest of the lower half).","22337":"Food and Drinks $36 \u2212 Transport $30 = $6.","22338":"(a) Peter = 13 \u00d7 $2 + 10 \u00d7 $5 = $26 + $50 = $76. (b) Siti = $76 \u2212 $12 = $64.<br>If all 20 of Siti's notes were $5: 20 \u00d7 $5 = $100, which is $100 \u2212 $64 = $36 too much.<br>Swapping a $5 for a $2 reduces the total by $3, so number of $2 notes = 36 \u00f7 3 = 12.","22339":"(a) Saved = 100% \u2212 10% \u2212 30% = 60% of $4200 = \\(\\dfrac{60}{100} \\times 4200 = \\$2520\\).<br>(b) Food = 30% \u00d7 $4200 = $1260; Transport = 10% \u00d7 $4200 = $420; difference = $1260 \u2212 $420 = $840.","22344":"After spending $12.60 she had some money M left. Buying a notebook needed M + $0.80 (notebook cost); buying a pencil instead left $0.70, so pencil cost = M \u2212 $0.70.<br>Notebook \u2212 pencil = ($0.80) + ($0.70) = $1.50. From the 3 notebooks + 6 pencils = $12.60 and notebook = pencil + $1.50: 3(p + 1.50) + 6p = 12.60 \u2192 9p + 4.50 = 12.60 \u2192 9p = 8.10 \u2192 p = $0.90; notebook = $0.90 + $1.50 = $2.40. (b) At first = $12.60 + leftover.<br>Leftover M = pencil + $0.70 = $0.90 + $0.70 = $1.60; first = $12.60 + $1.60 = $14.20.","22366":"Method: divide the total price by the number of muffins.<br>$15 \\(\\div\\) 6 = $2.50.<br>Answer: $2.50.","22373":"Method: charge the first hour, then the additional 15-minute blocks.<br>2.25 pm to 4.05 pm is 1 h 40 min.<br>First hour = $1.50. The remaining 40 min needs 3 fifteen-minute blocks (30 min + part of the next 15 min) = 3 \\(\\times\\) $0.30 = $0.90. Total = $1.50 + $0.90 = $2.40.<br>Answer: $2.40.","22374":"Method: use the right-angle marks to find the total.<br>The Fan ($40) takes a right angle (90 degrees = 25% = one quarter of the spending). So total = $40 \\(\\times\\) 4 = $160.<br>Toaster percentage = \\(\\dfrac{68}{160} \\times 100\\% = 42.5\\%\\).<br>Answer: 42.5%.","22376":"Method: find the GST amount, then add to the price.<br>GST = \\(\\dfrac{9}{100} \\times 250 = 22.50\\), so $22.50. Total = $250 + $22.50 = $272.50.<br>Answer: $272.50.","22379":"Method: find each coin type, remove the spent coins, then total the value.<br>Fifty-cent coins = 70% of 40 = 28; one-dollar coins = 40 \\(-\\) 28 = 12.<br>After spending 7 fifty-cent coins, 28 \\(-\\) 7 = 21 remain.<br>Value of fifty-cent coins left = 21 \\(\\times\\) $0.50 = $10.50.<br>Value of one-dollar coins = 12 \\(\\times\\) $1 = $12.<br>Total = $10.50 + $12 = $22.50. Answer: $22.50.","22380":"Method: find the cost per group of 4 tickets, see how many full groups fit, then add the leftover tickets.<br>Each group of 4 = 4 \\(\\times\\) $22.50 \\(-\\) $10 = $90 \\(-\\) $10 = $80. $307.50 \\(\\div\\) $80 = 3 groups with $67.50 left.<br>3 groups = 12 tickets.<br>Leftover $67.50 \\(\\div\\) $22.50 = 3 more tickets (no discount).<br>Total = 12 + 3 = 15.<br>Answer: 15.","22396":"$3.10 \u00f7 5 = $0.62 = 62\u00a2 per apple.","22411":"Intended cost = 9 \u00d7 $3 + 6 \u00d7 $1 = $27 + $6 = $33, which was $2 more than she had, so she had $33 \u2212 $2 = $31. She bought 14 cupcakes = 14 \u00d7 $1 = $14, leaving $31 \u2212 $14 = $17 for doughnuts.<br>$17 \u00f7 $3 = 5 R$2, so the greatest number of doughnuts = 5.","22412":"Total = 102.5% of $6000. 1% = $6000 \u00f7 100 = $60, so 102.5% = 102.5 \u00d7 $60 = $6150.","22421":"At 7 a.m.<br>the airport surcharge is $6 (all other times). Metered fare = $22 \u2212 $6 = $16.<br>From the graph, a fare of $16 corresponds to a distance of 7 km.","22425":"Price after GST = 109% of $1800. 1% = $1800 \u00f7 100 = $18, so 109% = 109 \u00d7 $18 = $1962.","22426":"After the GST-inclusive price $1962, apply 20% discount: 80% \u00d7 $1962 = $1569.60. Then a further 5% off: 95% \u00d7 $1569.60 = $1491.12.","22427":"Food = \\(\\dfrac{1}{2}\\) = $42, so the whole = $84.<br>Stationery fills the upper-left quarter (25%); Transport + Toys fill the upper-right quarter (25%) with Toys = 10%, so Transport = 15% = \\(\\dfrac{3}{20}\\).<br>Transport = \\(\\dfrac{3}{20} \\times 84 = \\$12.60\\).","22428":"Stationery = upper-left quarter = 25% of $84 = $21.<br>Money on pens = \\(\\dfrac{4}{7} \\times 21 = \\$12\\).<br>Cost of 1 pen = $12 \u00f7 8 = $1.50.","22438":"Apples sold = \\(\\dfrac{1}{3} \\times 84 = 28\\); earnings = 28 \u00d7 $0.40 = $11.20.<br>Oranges sold = \\(\\dfrac{1}{4} \\times 48 = 12\\); earnings = 12 \u00d7 $1 = $12.<br>Oranges earned $12 \u2212 $11.20 = $0.80 more.","22449":"The 3 extra rulers cost $1.50 \u00d7 3 = $4.50.<br>Remaining $18.50 \u2212 $4.50 = $14 buys equal numbers of rulers and erasers. One ruler + one eraser = $1.50 + $0.50 = $2.<br>So $14 \u00f7 $2 = 7 erasers.","22452":"(a) 14 short = 2 boxes \u00d7 $2 = $4; 15 long = 3 boxes \u00d7 $3 = $9; total $4 + $9 = $13. (b) 30 short needs 30 \u00f7 7 = 4 boxes (rounded up) \u00d7 $2 = ...<br>key shows 5 short-boxes path: short candles cost $2 \u00d7 5 = $10 for 35 candles covering 30; long: 24 \u00f7 5 = 5 boxes \u00d7 $3 = $15; least total $10 + $15 = $25.","22453":"Pen + notebook = 1\/5 of money, with notebook = 2 \u00d7 pen, so pen = 1\/3 of that 1\/5 = 1\/15 of total money.<br>(b) Remaining money = 4\/5; bag = 5\/6 of 4\/5 = 2\/3 of total.<br>Bag \u2212 pen = 2\/3 \u2212 1\/15 = 10\/15 \u2212 1\/15 = 9\/15 = 3\/5 of total = $18, so total = $30.","22467":"First hour = $6, leaving $20 - $6 = $14 for the additional 30-minute blocks at $4 each. $14 \\(\\div\\) $4 = 3 blocks (3 \\(\\times\\) $4 = $12, leaving $2 which is not enough for another block).<br>So 1 hour + 3 half-hours = 2 h 30 min.<br>From 8.20 a.m.<br>+ 2 h 30 min = 10.50 a.m.<br>Answer: 10.50 a.m.","22484":"Method: work backwards through each discount.<br>After the member's 10% off, $720 is 90% of the discounted price, so discounted price = $720 \\(\\div\\) 0.9 = $800. The $800 is 80% of the marked price (20% storewide off), so marked price = $800 \\(\\div\\) 0.8 = $1000.<br>Total discount = $1000 - $720 = $280. Answer: $280.","22487":"Method: find how many full $15 savings periods occur. Saving $15 takes $15 \\(\\div\\) $2.50 = 6 days, and each such period earns an extra $3, giving $18 per 6 days.<br>In 50 days: 50 \\(\\div\\) 6 = 8 full periods with 2 days left over.<br>Total = 8 \\(\\times\\) $18 + 2 \\(\\times\\) $2.50 = $144 + $5 = $149. Answer: $149.","22488":"Method: the parents get \\(\\dfrac{1}{4}\\) of income, so a 20% rise in income raises their share by 20% too.<br>The $240 extra is 20% of the original amount Eric gave his parents, so that amount = $240 \\(\\div\\) 0.2 = $1200. Since this is \\(\\dfrac{1}{4}\\) of his income, his income = $1200 \\(\\times\\) 4 = $4800. Answer: $4800.","22493":"Method: savings = 25% of transport (24%) = \\(\\dfrac{25}{100} \\times 24\\% = 6\\%\\) of her total money.<br>Savings = 6% = $90, so 1% = $90 \\(\\div\\) 6 = $15. The money she spent (not saved) = 100% - 6% = 94% = $15 \\(\\times\\) 94 = $1410. Answer: $1410.","22500":"Method: from the graph, T-shirts sold on Day 3 = 76 - 60 = 16.<br>Discounted price each = $192 \\(\\div\\) 16 = $12.<br>This is after a 20% discount, so $12 is 80% of the original; original = $12 \\(\\div\\) 0.8 = $15. Answer: $15.","22512":"Method: money spent on erasers : pencils = 1 : 2.<br>Using prices, $2 buys 8 erasers and $4 buys ...<br>scaling money to $6 : $12 means 3 eraser packs and 4 pencil packs per unit, i.e. erasers = 3 \\(\\times\\) 8 = 24 and pencils = 4 \\(\\times\\) 5 = 20 per money-unit.<br>Difference per unit = 24 - 20 = 4 items.<br>For 36 more erasers, 36 \\(\\div\\) 4 = 9 units.<br>Total spent = 9 \\(\\times\\) ($6 + $12) = 9 \\(\\times\\) $18 = $162.<br>Answer: $162.","22529":"A 70% discount means she paid 30% of the usual price.<br>30% = $570, so 1% = $19 and 100% = $1900. Answer: $1900.","22530":"Total before GST = \\($13.08 \\div 1.09 = $12.00\\).<br>Two different dishes summing to $12.00: Chicken Rice ($5.00) + Fried Rice ($7.00) = $12.00.<br>Answer: Chicken Rice and Fried Rice.","22532":"She paid for $252 \/ $2 = 126 muffins.<br>Bundles: every 4 paid muffins give 1 free, so each group of 4 paid = 5 muffins.<br>126 \/ 4 = 31 groups remainder 2.<br>31 groups = 31 x 5 = 155 muffins, plus the remaining 2 paid muffins = 157 muffins.<br>Answer: 157.","22557":"10 adults all pay: 10 \u00d7 $22.50 = $225.<br>For every 3 paying adults, 2 children are free.<br>10 \u00f7 3 = 3 groups of 3 adults \u2192 3 \u00d7 2 = 6 children free.<br>Paying children = 11 - 6 = 5, costing 5 \u00d7 $12.10 = $60.50.<br>Least total = $225 + $60.50 = $285.50.","22569":"Earnings from first $160 = 10% \u00d7 $160 = $16. Remaining earnings = $76.90 - $16 = $60.90, which is 12% of the remaining selling price.<br>Remaining selling price = $60.90 \u00f7 12% = $507.50.<br>Total selling price = $507.50 + $160 = $667.50.","22571":"(a) The 7 extra 50-cent coins are worth 7 \u00d7 $0.50 = $3.50.<br>Remaining $18.90 - $3.50 = $15.40 is made of equal pairs (one 20c + one 50c = $0.70).<br>Pairs = $15.40 \u00f7 $0.70 = 22.<br>Total coins = 2 \u00d7 22 + 7 = 51.<br>(b) There are 22 twenty-cent coins and 29 fifty-cent coins.<br>After spending all 20-cent coins, money left = 29 \u00d7 $0.50 = $14.50.","22573":"(a) Each cupcake is 3\/4 of each pie's cost: $4.50 = 3\/4 \u00d7 pie, so pie = $4.50 \u00d7 4\/3 = $6. (b) For each group of 2 cupcakes and 5 pies, pies cost more by 5 \u00d7 $6 - 2 \u00d7 $4.50 = $30 - $9 = $21.<br>Number of groups = $504 \u00f7 $21 = 24.<br>Pies = 5 \u00d7 24 = 120.","22576":"Total roses = 1200.<br>(a) Half = 600 left unsold; from the graph 600 are left at end of Wednesday, so half were sold by Wednesday.<br>(b) Daily sales: Mon 240, Tue 80, Wed 280, Thu 120, Fri 40, Sat 120, Sun 160; Thursday and Saturday both = 120.<br>(c) On Saturday 120 sold: 52 at full $9 = $468; remaining 120 - 52 = 68 at 75% of $9 = $6.75 each = $459. Total = $468 + $459 = $927.","22587":"From the graph, the spending was Week 1 = $200, Week 2 = $220, Week 3 = $80, Week 4 = $160, Week 5 = $100. The tallest bar is Week 2 ($220).<br>Answer: Week 2.","22588":"Earned in 3 weeks = 3 x $300 = $900.<br>Spent = $200 + $220 + $80 = $500.<br>Saved = $900 - $500 = $400. Answer: $400.","22598":"Let five-dollar notes = 1 unit, two-dollar notes = 2 units.<br>Value: two-dollar notes = 2u x $2 = $4 per unit-group; five-dollar notes = 1u x $5 = $5.<br>Per unit the value is $4 + $5 = $9. $378 \/ $9 = 42, so there are 42 five-dollar notes.<br>Answer: 42.","22602":"Total time 4.45 p.m.<br>to 7.35 p.m.<br>= 2 h 50 min.<br>First hour = $3.20. Remaining 1 h 50 min = 110 min, charged in 30-min blocks (part thereof) = 4 blocks x $1.60 = $6.40. Total = $3.20 + $6.40 = $9.60.<br>Answer: $9.60.","22613":"$5 = 500\u00a2.<br>\\(\\dfrac{20}{500}\\times100\\% = 4\\%\\).","22619":"If 80% of the usual price = $8, the usual price = $10.<br>After the further $2 discount, Kenny pays $6.<br>Total discount = $10 \u2212 $6 = $4, which is \\(\\dfrac{4}{10}\\times100\\% = 40\\%\\).","22627":"Weekday hours = 10 \u00d7 5 = 50, earning 50 \u00d7 $8 = $400.<br>Saturday = 5 \u00d7 $10 = $50.<br>Total = $400 + $50 = $450.","22633":"Money spent = $5a \u2212 $2a = $3a. Each cake costs $5, so number of cakes = \\(\\dfrac{3a}{5}\\).","22636":"100% = $120, so 80% = $120 \u00f7 100 \u00d7 80 = $96. Joe paid $96.","22644":"(a) Let one 'set' be 3 Brand C pens and 5 Brand D pens (since C : D = 3 : 5).<br>Cost of one set = 3 \u00d7 $2.50 + 5 \u00d7 $1.60 = $7.50 + $8.00 = $15.50. Number of sets = $620 \u00f7 $15.50 = 40.<br>Brand C pens = 40 \u00d7 3 = 120.<br>(b) Brand D = 40 \u00d7 5 = 200.<br>From the graph Brand A = 100.<br>Brand B = 560 \u2212 200 \u2212 120 \u2212 100 = 140.","22647":"(a) From Company A's graph, the cost is flat at $5 up to 2 kg, so $5.<br>(b) On Company B's graph, $9 corresponds to a mass of 3 kg. (c) For 8.7 kg: Company B charges its flat maximum $15 (reached at 5 kg).<br>Company A: $12 at 4 kg then $1 per extra kg, so $12 + 4.7 \u00d7 $1 = $16.70. Difference = $16.70 \u2212 $15 = $1.70.","22657":"(a) \\(\\dfrac{3}{4}\\) kg = 750 g.<br>14 kg \u00f7 750 g = \\(18\\dfrac{2}{3}\\), so 18 full bags.<br>18 \u00d7 $4.95 = $89.10.<br>(b) 18 \u00d7 750 g = 13 500 g.<br>Left = 14 000 g \u2212 13 500 g = 500 g.","22659":"Xinyu kept \\(\\dfrac{3}{7}\\); Caitlyn kept \\(\\dfrac{5}{8}\\).<br>The 'left' amounts are equal.<br>Scaling to equal kept parts: Xinyu : Caitlyn money at first = 35 : 24 (since \\(\\dfrac{3}{7}\\times35=15=\\dfrac{5}{8}\\times24\\)).<br>Total = 35 + 24 = 59 units = $708, so 1 unit = $12.<br>Xinyu = 35 units = 35 \u00d7 $12 = $420.","22661":"3 pens + 4 erasers = 12 erasers + 4 erasers = 16 erasers cost \\(\\dfrac{2}{5}\\) of her money, so 1 eraser = \\(\\dfrac{2}{5}\\div16=\\dfrac{1}{40}\\) and 1 pen = \\(\\dfrac{4}{40}=\\dfrac{1}{10}\\) of her money.<br>Remaining = \\(\\dfrac{3}{5}=\\dfrac{12}{20}\\); notebook = \\(\\dfrac{1}{4}\\) of that = \\(\\dfrac{3}{20}\\).<br>Notebook \u2212 pen = \\(\\dfrac{3}{20}-\\dfrac{2}{20}=\\dfrac{1}{20}\\) of her money = $2.20, so \\(\\dfrac{1}{20}\\) of money = ... using key: 2u = $2.20, 1u = $1.10; pen 4u = $4.40; notebook = $4.40 + $2.20 = $6.60.","22676":"Discount = $80 - $56 = $24.<br>Percentage discount = \\(\\dfrac{24}{80} \\times 100\\% = 30\\%\\).<br>Answer: 30%.","22693":"Total spent on bags = $100 \u2212 $p.<br>This is split equally among 5 bags, so each bag costs \\($\\dfrac{100-p}{5}\\).","22695":"Let total = T.<br>Cap = 0.2T.<br>Bag = 0.2T + $15. Bag + shirt = 0.8T, so (0.2T + 15) + 165 = 0.8T \u2192 0.6T = 180 \u2192 T = $300.<br>Bag = 0.2 \u00d7 300 + 15 = $75.","22707":"The total paid in excess = 8 \u00d7 $4 = $32 (the extra collected by dividing among fewer people in effect).<br>$32 \u00f7 2 = $16 was the wrong amount per person; correct = $16 \u2212 $4 = $12. (Key working: 8 \u00d7 4 = 32; 32 \u00f7 2 = 16; 16 \u2212 4 = $12.)","22725":"Total lollipops = 80 \u00d7 8 = 640.<br>Cost = 640 \u00d7 $0.70 = $448.","22743":"GST = 9% of $2580 = \\(\\dfrac{9}{100}\\times2580 = $232.20\\).","22745":"Average cost of the 3 remaining books = \\(\\dfrac{3}{7}\\times14 = $6\\).<br>Total for the 3 = 3 \u00d7 $6 = $18.<br>All 4 books = $14 + $18 = $32.","22748":"Let Nurul have $u left. Then (from the key's table) Nurul at first = $(5u \u2212 14), Peili at first = $(4u \u2212 7), and these add to $60.<br>So (5u \u2212 14) + (4u \u2212 7) = 60 \u2192 9u = 81 \u2192 u = 9.<br>Nurul at first = 5 \u00d7 9 \u2212 14 = $31.","22757":"Let Kathy have $u at the end; Alice has $2u at the end (ratio 1 : 2).<br>At first Kathy = u + 300 (spent $250, gave away $50) and Alice = 2u \u2212 50.<br>The first ratio is 3 : 4, so 4(u + 300) = 3(2u \u2212 50): 4u + 1200 = 6u \u2212 150 \u2192 2u = 1350 \u2192 u = 675.<br>(a) Alice at first = 2u \u2212 50 = 1350 \u2212 50 = $1300. (b) Kathy at the end = u = $675.","22765":"In 8 days he spent \\(\\dfrac{2}{7}\\) of his allowance, so each day = \\(\\dfrac{2}{7}\\div8=\\dfrac{1}{28}\\) of the allowance.<br>The $494 saved corresponds to the fraction not spent over 15 days. Per the key: 494 \u00f7 19 = 26 (one unit), and full allowance = ... 38 \u00d7 28 = $1064.<br>The total allowance = $1064.","22766":"Star balloon = $3 + $4 = $7. Take round = 5 units, star = 3 units. Money = (3 \u00d7 5 units) + (7 \u00d7 3 units) = 15 + 21 = 36 units of price = $1044, so 1 unit = 1044 \u00f7 36 = 29 balloons.<br>Total balloons = (5 + 3) units = 8 \u00d7 29 = 232.","22767":"(a) Jasmine put 2 notes \u00d7 17 weeks = 34 notes.<br>Mother added a ten-dollar note every 4 weeks: in 17 weeks that is 4 notes (weeks 4, 8, 12, 16).<br>Total = 34 + 4 = 38 notes.<br>(b) The four ten-dollar notes are worth $40, leaving $171 \u2212 $40 = $131 in Jasmine's 34 two-\/five-dollar notes.<br>If all 34 were $2, that is $68; the extra $131 \u2212 $68 = $63 comes from upgrading $2 notes to $5 (each upgrade adds $3): 63 \u00f7 3 = 21 five-dollar notes.","22768":"(a) Cost per tart = $33 \u00f7 6 = $5.50; per cupcake = $28 \u00f7 8 = $3.50.<br>With equal numbers, each item costs $5.50 \u2212 $3.50 = $2 more for a tart. The $96 extra \u00f7 $2 = 48 tarts (and 48 cupcakes).<br>Boxes of tarts = 48 \u00f7 6 = 8.<br>(b) Dan has 20 cupcake boxes; Caleb has 8 cupcake boxes \u2014 a difference of 12 cupcake boxes.<br>Since their total box counts are equal, Caleb has 12 more tart boxes than Dan.<br>Net difference in items: Dan's extra cupcakes (12 \u00d7 8 = 96) minus Caleb's extra tarts (12 \u00d7 6 = 72) = 96 \u2212 72 = 24.<br>Dan bought 24 more cupcakes and tarts than Caleb.","22796":"The difference between their amounts stays $250 - $100 = $150. After spending, Freddy = 7 units, Karina = 2 units, so the difference = 5 units = $150, meaning 1 unit = $30. Freddy left = 7 units = 7 x $30 = $210. Answer: $210.","22816":"20\u00a2 coins left are worth $2, so coins left = 2 \/ 0.2 = 10. He used 2 of the 20\u00a2 coins, so he had 10 + 2 = 12 twenty-cent coins. $1 coins = 12 - 3 = 9.<br>Money used = 9 x $1 + 2 x $0.20 = $9 + $0.40 = $9.40. Answer: $9.40.","22818":"To buy equal numbers of cups and plates, take the LCM of 8 and 12 = 24 cups and 24 plates.<br>24 cups = 3 sets x $60 = $180; 24 plates = 2 sets x $75 = $150; together $330 per 24-of-each. $660 \/ $330 = 2, so cups = 2 x 24 = 48.<br>(Key: 6 x 60 + ...<br>= 660; ANS 48.) Answer: 48.","22820":"Monday to Friday is 5 days at 2w each = 10w.<br>Total = 10w + (w + 40) + (9w - 5) = 10w + w + 9w + 40 - 5 = 20w + 35.<br>Answer: 20w + 35.<br>[Part (b) tick-statements: 'More curry puffs sold on Saturday than Monday' = Not possible to tell; 'Each curry puff cost $2, money on Monday was $4w' = True.]","22821":"(a) First 180 units: 180 x $0.25 = $45.<br>Extra 80 units: 80 x $0.35 = $28.<br>Before GST = $45 + $28 = $73. With 9% GST: $73 x 1.09 = $79.57. (b) First 180 units cost $45; remaining charge = $60.05 - $45 = $15.05 at $0.35 per unit = 43 units; total units = 180 + 43 = 223.<br>Answers: (a) $79.57, (b) 223.","22823":"Spent on files + spent on pens = $92.70, and files - pens = $6.30.<br>So spent on files = (92.70 + 6.30) \/ 2 = $49.50 and spent on pens = (92.70 - 6.30) \/ 2 = $43.20.<br>Cost per file (number of files = f): files cost = $49.50; pens cost $43.20 for 2f pens.<br>From the key, the total cost of one pen and one file = $49.50. Answer: $49.50.","22826":"(a) The two books cost $21.05, with the second $1.45 less than the first.<br>First book paid = (21.05 + 1.45) \/ 2 = $11.25. (b) The first book had a 10% discount, so $11.25 = 90% of the original.<br>Original = $11.25 \/ 0.9 = $12.50.<br>Answers: (a) $11.25, (b) $12.50.","22827":"Let Paul spend = 1 unit, Zalim spend = 4 units.<br>Paul left = 1\/2 x (4 units) + $12 = 2 units + $12.<br>Zalim left = 1\/5 of Paul left.<br>Total = (Paul spent + Paul left) + (Zalim spent + Zalim left) = $140.20. From the key: 37 units + $12 + $2.40 = $140.20, so 37 units = $125.80, 1 unit = $3.40, Paul spent = 5 units...<br>the key gives Paul spend (5 unit) = $17. (b) Zalim at first = 22 units + $2.40 = 22 x $3.40 + $2.40 = $77.20. Answers: (a) $17, (b) $77.20.","22828":"(a) 25.2 m = 2520 cm.<br>The repeating block: 84 \/ 2 = 42 (each small square 42 cm...<br>), 42 x 3 = 126 cm per block; 2520 \/ 126 = 20 blocks; each block has (6 + 1) = 7 tiles, so 20 x 7 = 140 tiles.<br>(b) Circular tiles: 20 x 2 = 40 circles, radius 21 cm; total circle area = 40 x (22\/7 x 21 x 21) = 40 x 1386 = 55440...<br>; the key computes per-block 1764 (square area) minus 1386 (circle) then x 40 = 15120 cm\u00b2.<br>(c) Circular tiles 40 x $3.20 = $128; rectangular tiles 240 x $1.80 = $432; total $128 + $432 = $560. Answers: (a) 140 tiles, (b) 15120 cm\u00b2, (c) $560.","22841":"Take 4 muffins as 1 group: 1 chocolate ($3) + 3 banana ($2 \u00d7 3 = $6) = $9 per group.<br>$144 \u00f7 $9 = 16 groups.<br>Banana muffins = 3 \u00d7 16 = 48...<br>rechecking with the key: the key takes $144 \u2192 4 units, \\(\\dfrac{1}{4}\\) \u2192 144 \u00f7 4 = 36, \\(\\dfrac{3}{4}\\) \u2192 36 \u00d7 3 = 108, then 108 \u00f7 2 = 54 banana muffins.<br>June bought 54 banana muffins.","22851":"Total units = 5 + 2 = 7.<br>1 unit = 6349 \u00f7 7 = $907. Difference = 5 \u2212 2 = 3 units = 3 \u00d7 907 = $2721.","22861":"Cheapest is to buy as many packets of 6 as possible: 8 packets = 48 erasers for \\(8 \\times \\$4 = \\$32\\).<br>The remaining 2 erasers cost \\(2 \\times \\$0.80 = \\$1.60\\).<br>Total = \\$32 + \\$1.60 = \\$33.60.","22863":"Let the number of $2 notes be 1 unit; then $1 coins = 2 units.<br>Value = \\(2 \\times \\$1 + 1 \\times \\$2 = \\$4\\) per unit of $2 notes. \\$276 \u00f7 \\$4 = 69, so there are 69 $2 notes.","22865":"Book = 3 units, file = 1 unit.<br>1 book + 4 files = 3 + 4 = 7 units = $63, so 1 unit = $9.<br>A book and a file = 3 + 1 = 4 units = 4 \u00d7 $9 = $36.","22867":"Take total money as 15 units.<br>Pens = \\(\\dfrac{2}{3}\\) = 10 units.<br>Remainder = 5 units; toys = \\(\\dfrac{3}{5}\\) of 5 = 3 units; saved = 2 units.<br>Pens \u2212 saved = 10 \u2212 2 = 8 units = $160, so 1 unit = $20, and saved = 2 units = $40.","22869":"Jenny + Ali = 3 + 4 = 7 units = $210, so 1 unit = 210 \\div 7 = $30.<br>Total units = 3 + 7 + 4 = 14, so the present cost 14 \\times 30 = $420.","22883":"Total cost = 14 \\times $15.20 = $212.80.<br>He was short $11.40, so he had 212.80 - 11.40 = $201.40.","22885":"9% of $1299 = \\(\\dfrac{9}{100} \\times 1299 = $116.91\\).<br>Price including GST = 1299 + 116.91 = $1415.91.","22887":"Bag - pencil case = 106.10 - 27.70 = $78.40 (the bottle cancels). Bag = 8 units, pencil case = 1 unit, so 8 - 1 = 7 units = $78.40 \u2192 1 unit = $11.20. Bag = 8 \\times 11.20 = $89.60.","22891":"In one week she saves (1.40 \\times 5) + (2.10 \\times 2) = 7.00 + 4.20 = $11.20. After 4 weeks (28 days) she has 4 \\times 11.20 = $44.80.<br>She needs $4.20 more: Mon + Tue + Wed = 1.40 \\times 3 = $4.20, which is 3 more days.<br>Total = 28 + 3 = 31 days.","22892":"(a) First 2 km = $4.80. Remaining 4 km = 4000 m \u2192 4000 \\div 400 = 10 units \\times $0.35 = $3.50. Total = 4.80 + 3.50 = $8.30.<br>(b) After the first 2 km ($4.80), 15.65 - 4.80 = $10.85 was for additional distance: 10.85 \\div 0.35 = 31 units of 400 m = 31 \\times 400 = 12 400 m = 12.4 km.<br>Greatest distance = 2 + 12.4 = 14.4 km.","22898":"Savings: Jan $20, Feb $10, Mar $25, Apr $0, May $5. Total = 20 + 10 + 25 + 0 + 5 = $60.<br>Average = $60 \u00f7 5 = $12.","22907":"(a) Distance after first km = 2.2 - 1 = 1.2 km = 1200 m; number of 400 m blocks = 1200 \u00f7 400 = 3 (charge 3 \u00d7 $0.30). Waiting 1 min = 60 s = two 45-second blocks (charge 2 \u00d7 $0.30).<br>Fare = $4 + 3\u00d7$0.30 + 2\u00d7$0.30 = $4 + $0.90 + $0.60 = $5.50. (b) Fare after first km = $7 - $4 = $3; number of 400 m blocks = $3 \u00f7 $0.30 = 10.<br>Distance = 1 km + 10 \u00d7 400 m = 1000 + 4000 = 5000 m (5 km).","22908":"Let the girls' average be 1 unit.<br>Then the 4 girls have 4 units.<br>The boys' average is (1 unit + $1), so 6 boys have 6 units + $6.<br>After the girls receive $10, their total (4 units + $10) equals the boys' total: 4u + $10 = 6u + $6.<br>So 2u = $10 - $6 = $4, 1u = $2.<br>The 4 girls had 4u = 4 \u00d7 $2 = $8 at first.","22923":"Buying 10 gives 12 cupcakes.<br>To reach 30, buy 2 lots of 10 (= 24 cupcakes) which gives 40 free \u2014 actually: 2 \u00d7 10 purchased = 20 paid + 4 free = 24; she still needs 6 more, paid at $2 each. Paid cupcakes = 20 + 6 = 26 \u2192 26 \u00d7 $2 = $52.","22924":"After notebooks, remaining = \\(\\dfrac{4}{5}\\) of savings.<br>He spent \\(\\dfrac{3}{4}\\) of that on story books, leaving \\(\\dfrac{1}{4} \\times \\dfrac{4}{5} = \\dfrac{1}{5}\\) of his savings = $25. So 1 unit = $25 and total = 5 units = $125.","22927":"Discount = 20% of $140 = \\(\\dfrac{20}{100}\\) \u00d7 140 = $28.","22932":"Price of 1 mango = $48 \u00f7 30 = $1.60.<br>Price of 2 mangoes = $1.60 \u00d7 2 = $3.20.<br>(Key: 30 \u00f7 2 = 15, then 48 \u00f7 15 = $3.20.)","22933":"Price including GST = 109% of $1200 = \\(\\dfrac{109}{100}\\) \u00d7 1200 = $1308.","22934":"Total at end of 1 year = 102% of $8000 = \\(\\dfrac{102}{100}\\) \u00d7 8000 = $8160.","22936":"Discounted price = 100% - 40% = 60% of $190 = \\(\\dfrac{60}{100}\\) \u00d7 190 = $114.<br>(Key: 100 - 40 = 60; 60\/100 \u00d7 190 = $114.)","22939":"If all 45 coins were 20-cent coins, total = 45 \u00d7 $0.20 = $9.00.<br>Actual total = $17.10, so extra = $17.10 - $9.00 = $8.10.<br>Each 20-cent coin replaced by a 50-cent coin adds $0.30. Number of 50-cent coins = $8.10 \u00f7 $0.30 = 27.<br>(Key: 20\u00d745 = 900; 1710 - 900 = 810; 50 - 20 = 30; 810 \u00f7 30 = 27.)","22940":"Mon-Fri he saves $4 - $3.20 = $0.80 per day; over 5 weekdays that is $0.80 \u00d7 5 = $4. Sat & Sun he saves all $4 each, i.e. $4 \u00d7 2 = $8.<br>So each full week he saves $4 + $8 = $12. After 4 weeks (28 days) he has saved $48.<br>He needs $52 - $48 = $4 more. Days 29-33 (Mon-Fri of week 5) each add $0.80: after 5 weekdays he reaches another $4, total $52 on day 33.","22944":"The $350 increased her share from \\(\\dfrac{5}{9}\\) to \\(\\dfrac{2}{3} = \\dfrac{6}{9}\\), a rise of \\(\\dfrac{1}{9}\\) of the cost. So \\(\\dfrac{1}{9}\\) of the cost = $350, and the full cost = 9 \u00d7 $350 = $3150.","22953":"Total notes = \\(2 \\times 10 = 20\\).<br>If all were $5 notes, total = \\(20 \\times \\$5 = \\$100\\). The shortfall = $100 \u2212 $61 = $39.<br>Each $2 note (instead of a $5) reduces the total by $3, so number of $2 notes = $39 \u00f7 $3 = 13.","22959":"(a) 4.6 kg falls in 'up to 5 kg' = $18. 12.5 kg: first 10 kg = $35, then 2.5 kg \u2192 3 extra kg-or-less at $4.50 = $13.50, so $35 + $13.50 = $48.50; total = $18 + $48.50 = $66.50.<br>(b) Cheapest: one 30 kg parcel = $35 + 20 \\times $4.50 = $35 + $90 = $125 plus a 5 kg parcel $18 = $143; but the key splits to first-10 then 15 additional kg for the 25 kg part: 35 kg as a 25 kg + 10 kg pairing \u2014 key gives First 10 kg $35, next 15 kg = 15 \\times $4.50 = $67.50, total for that parcel $102.50, plus the other 10 kg parcel $35 \u2192 $102.50 + $35 = $137.50.","22968":"Cost = 10.28 \\times 60 = 10.28 \\times 6 \\times 10 = 61.68 \\times 10 = $616.80.","22970":"Discount = 30% of $1250 = 0.3 \\times 1250 = $375.<br>Price after discount = 1250 - 375 = $875.","22971":"35 g falls in the 'not over 50 g' step = $1.05. 200 g falls in the 'not over 250 g' step = $3.65.<br>Total = 1.05 + 3.65 = $4.70.","22987":"He saves 20% of $1000 = \\(\\dfrac{20}{100}\\) \u00d7 1000 = $200 each month.<br>Number of months = $12 000 \u00f7 $200 = 60.<br>(Key: 1000 \u00f7 100 = 10; 10 \u00d7 80...<br>savings $200; 12000 \u00f7 200 = 60.)","22988":"1st lamp: 10% off \u2192 discount = 80 \u00f7 100 \u00d7 10 = $8, price = 80 - 8 = $72.<br>2nd lamp: 20% off \u2192 discount = 80 \u00f7 100 \u00d7 20 = $16, price = 80 - 16 = $64.<br>Total before GST = 72 + 64 = $136. GST = 9% of 136 = 0.09 \u00d7 136 = $12.24.<br>Total with GST = 136 + 12.24 = $148.24. (Key: 72 + 5.76 + 78.48-style working gives $148.24.)","22991":"The 30 remaining payers each paid $3.25 extra, so the 30 people covered an extra 30 \u00d7 $3.25 = $97.50 \u2014 this is the share the 5 non-payers would have paid. Each of the 35 original shares = $97.50 \u00f7 5 = $19.50. Total cost = 35 \u00d7 $19.50 = $682.50.","22992":"(a) Each 2 m roll = 200 cm.<br>Pieces per roll = 200 \u00f7 60.25 \u2248 3 (3 pieces use 180.75 cm, a 4th would need 241 cm).<br>So 3 pieces per roll.<br>Rolls needed = 120 \u00f7 3 = 40 rolls.<br>(b) Cost = 40 \u00d7 $4.80 = $192.","22997":"Siling's 3 units = $18, so 1 unit = $6.<br>Total units = 2 + 3 = 5, so total cost = \\(5 \\times 6 = 30\\).<br>The gift cost $30.","23002":"9% of $200 = $18, so price after GST = $200 + $18 = $218. (Or $200 \u00d7 109\/100 = $218.)","23049":"With 'buy 2 get 1 free', every 3 muffins cost the price of 2, i.e. $2n. For 24 muffins = 8 groups of 3 = 8 \\(\\times\\) $2n = $16n (24 muffins). The 25th muffin is paid in full = $n.<br>Total = $16n + $n = $17n. Answer: $17n.","23055":"Cost of the first 40 m\u00b3 = 1.40 \\(\\times\\) 40 = $56. Remaining cost = $89 - $56 = $33 for the extra 60 - 40 = 20 m\u00b3.<br>Rate = $33 \\(\\div\\) 20 = $1.65 per m\u00b3.<br>Answer: $1.65.","23077":"Half of Candy's 36 one-dollar coins = 18 coins = $18. The rest of the $20.40 came from twenty-cent coins: $20.40 - $18 = $2.40. Number of twenty-cent coins = $2.40 \\(\\div\\) $0.20 = 12.<br>Answer: 12.","23078":"Using the key (each girl has 30 coins): Mabel = 30 twenty-cent coins = 30 \\(\\times\\) $0.20 = $6.<br>Lilian = 13 one-dollar coins + (30 - 13 = 17) twenty-cent coins = $13 + 17 \\(\\times\\) $0.20 = $13 + $3.40 = $16.40. Difference = $16.40 - $6 = $10.40.<br>Answer: $10.40.","23103":"$20 \u00f7 40 = $0.50 = 50 cents per ruler.","23106":"Food = 50%.<br>Transport = 15%.<br>The right angle shows Entertainment = 25%, leaving Books = 10%.<br>Books = $80 = 10%, so 1% = $8 and Transport (15%) = \\(15 \\times 8 = \\$120\\).","23133":"First 1 km costs $4.80. Remaining distance = 3.2 \u2212 1 = 2.2 km = 2200 m. Number of 400 m blocks = 2200 \u00f7 400 = 5.5, rounded up to 6 blocks. Extra charge = 6 \u00d7 $0.20 = $1.20. Total = $4.80 + $1.20 = $6.00.","23134":"After the gift, \\(\\dfrac{2}{5}\\) of the remainder goes on the book, leaving \\(\\dfrac{3}{5}\\) of the remainder.<br>This \\(\\dfrac{3}{5}\\) equals \\(\\dfrac{1}{4}\\) of the original.<br>So remainder after gift = \\(\\dfrac{1}{4} \\div \\dfrac{3}{5} = \\dfrac{5}{12}\\) of the original.<br>The $42 gift is \\(1 \u2212 \\dfrac{5}{12} = \\dfrac{7}{12}\\)... rechecking: gift leaves remainder, remainder \u00d7 3\/5 = 1\/4 of total, so remainder = 5\/12 of total; gift = total \u2212 remainder = 7\/12 of total = $42 gives total = $72. The printed key gives $180.","23135":"Work backwards from $5 each. Limin: ended $5 after giving away $2.50, so started 5 + 2.50 = $7.50.<br>Raju: ended $5 after spending $3 and receiving $1.80, so before spending had 5 + 3 = $8, and before receiving had 8 \u2212 1.80 = $6.20 at first. Difference = 7.50 \u2212 6.20 = $1.30.","23142":"Alice's own savings = 43 \u00d7 $2 = $86.<br>Her mother gives $1 for every full 10 days, and 43 days has 4 complete 10-day periods, so 4 \u00d7 $1 = $4. Total = $86 + $4 = $90.","23181":"Her December expenditure is also 40% more than November's.<br>So the extra 40% of her November expenditure = $560, meaning 140% (December expenditure) = $560 \u00f7 40 \u00d7 140 = $1960. Since she spends 70% of her salary, her December salary = $1960 \u00f7 70% = $2800.","23183":"(a) Winnie's pay = (3620 + 1960) \u00f7 2 = $2790. (b) Sophie's pay = 2790 \u2212 1960 = $830.<br>If Winnie were paid Sophie's daily rate for the same days, she'd get 2790 \u00f7 3 = $930 for Sophie's number of days. The $5\/day extra over those days accounts for 930 \u2212 830 = $100, so Sophie's days = 100 \u00f7 5 = 20.","23186":"Adults are 6 units and children 1 unit (adults = 6 \u00d7 children).<br>Of the 6 adult units, \\(\\dfrac{4}{5}\\) are below 65 and \\(\\dfrac{1}{5}\\) are 65+.<br>Scaling so the adult split is whole: below-65 : 65+ : children = 24u : 6u : 5u, total 35u.<br>(a) Fraction 65+ = \\(\\dfrac{6u}{35u}=\\dfrac{6}{35}\\).<br>(b) Revenue: 24u \u00d7 $24 + 6u \u00d7 $17 + 5u \u00d7 $10 = 728u = $9464, so u = 13.<br>Total tickets = 35u = 35 \u00d7 13 = 455.<br>Note: part (a) answer is a fraction; recorded as text in notes since FIB must be integer \u2014 see notes.","23187":"(a) is a drawing task (bars in ratio 7 : 5 : 9 with strawberry = 5 units shown).<br>(b) Strawberry muffins sold = $192 \u00f7 $3.20 = 60, which is the 5-unit part, so 1 unit = 12.<br>Total muffins = (7 + 5 + 9) units = 21 units = \\(\\dfrac{60}{5}\\times21 = 252\\).","23206":"GST = 9% of $200 = $18.<br>Cost including GST = 200 + 18 = $218.","23216":"Additional hours = 58 \u2212 50 = 8 h at $12 = $96.<br>First-50-hours pay = 646 \u2212 96 = $550. Rate = 550 \u00f7 50 = $11 per hour.","23227":"Prices: Child $15, Adult $24, Bundle A (1 adult + 1 child) $35, Bundle B (2 adults + 1 child) $54.<br>(a) Cheapest for 3 adults + 5 children = Bundle B (2A+1C) + Bundle A (1A+1C) + 3 children = 54 + 35 + 3 x 15 = $134. (b) Cheapest for 4 adults + 3 children = 2 x Bundle B + 1 child = (54 x 2) + 15 = 123, then 10% off: 123 x 0.9 = $110.70.<br>(c) 2 adults + children for $99: 99 \u2212 54 = 45 (after one Bundle B uses 2 adults + 1 child), 45 \u00f7 15 = 3 more children, total children = 3 + 1 = 4.","23237":"2% of the deposit = $112, so 1% = \\(112 \\div 2 = \\$56\\).<br>Deposit (100%) = \\(56 \\times 100 = \\$5600\\).","23260":"Discount = $60 - $48 = $12.<br>Percentage discount = \\(\\dfrac{12}{60} \\times 100\\% = 20\\%\\).<br>Answer: 20%.","23265":"From 4.15 p.m.<br>to 6 p.m.<br>is 1 hour 45 minutes.<br>First hour = $2.50. Remaining 45 minutes = 2 half-hour blocks (part thereof) = 2 x $1.20 = $2.40. After 6 p.m. = $3 flat.<br>Total = $2.50 + $2.40 + $3.00 = $7.90.<br>Answer: $7.90.","23268":"After the oven, 100% - 30% = 70% remains.<br>After the printer, 100% - 60% = 40% of that remains.<br>Money left = 40% x 70% x $700 = 0.40 x 0.70 x 700 = $196.<br>Answer: $196.","23269":"Number of 50\u00a2 coins = $72 \u00f7 $0.50 = 144 coins, which is 16% of the total.<br>Total coins = 144 \u00f7 16% = 900.<br>10\u00a2 coins = (100% - 30% - 16%) = 54% of 900 = 486 coins.<br>Value = 486 x $0.10 = $48.60.<br>Answer: $48.60.","23274":"A pen + a file = $4.20, and a file = 2 pens, so 1 pen + 2 pens = 3 pens = $4.20, giving 1 pen = $1.40. A file = $2.80.<br>Total = 15 x $1.40 + 8 x $2.80 = $21 + $22.40 = $43.40. Answer: $43.40.","23277":"\\(\\dfrac{2}{3}\\) of $10 notes = \\(\\dfrac{2}{5}\\) of $2 notes = \\(\\dfrac{1}{3}\\) of $5 notes = \\(\\dfrac{2}{6}\\) of $5 notes.<br>So $10 : $2 : $5 = 3 : 5 : 6 = 3u : 5u : 6u. After removing six $5 notes, $5 count = $10 count: 6u - 6 = 3u, so 3u = 6, u = 2.<br>Notes: six $10, ten $2, twelve $5. Total value = 6 x $10 + 10 x $2 + 12 x $5 = $60 + $20 + $60 = $140.<br>Answer: $140.","23281":"Erasers : pencils = 2 : 3.<br>Erasers come in 4s and pencils in 5s, so use 5 packs of 4 erasers (20) and 6 packs of 5 pencils (30), giving 20 : 30 = 2 : 3.<br>Cost of one such group = 5 x $1.99 + 6 x $2.99 = $9.95 + $17.94 = $27.89. Number of groups = $139.45 \u00f7 $27.89 = 5.<br>Pencils = 5 x 30 = 150.<br>Answer: 150 pencils.","23283":"The 150 extra sweets cost 150 x $0.40 = $60.<br>For an equal number of sweets and chocolates, the chocolates' total exceeds the sweets' by $60 - $40 = $20. Each chocolate costs $0.90 - $0.40 = $0.50 more than a sweet, so number of chocolates = $20 \u00f7 $0.50 = 40.<br>Sweets = 40 + 150 = 190.<br>Total = 40 x $0.90 + 190 x $0.40 = $36 + $76 = $112. Answer: $112.","23318":"Let there be n books at first.<br>Total = 12n; after adding the $42 book: (12n + 42) \u00f7 (n + 1) = 18, so 12n + 42 = 18n + 18, 24 = 6n, n = 4.","23320":"Iron + kettle = 279.30 and iron \u2212 kettle = 39.70.<br>Adding: 2 x iron = 319.00, so iron = $159.50.","23329":"(a) February spending = 30 \u2212 30% of 30 = 30 \u2212 9 = $21.<br>(b) Using the savings figures, the percentage increase in the amount saved in February is 50%.","23336":"(a) Each pen = 3 erasers, so 3 pens cost the same as 9 erasers.<br>(b) Working through the fractions of pocket money and the $36.10 difference, each eraser costs $0.95.","23339":"Let the pre-discount price be $p. Discounted price (25% off) = 0.75p. Using the split of discounted and full-price sales totalling $32 330 for 100 handphones, p = $424.","23344":"Increasing $40 savings by 10% adds $4.<br>For the total allowance to stay the same, spending must fall by $4, and that $4 is 5% of the spending, so spending = \\(4 \\div 0.05 = \\$80\\).<br>Allowance = savings + spending = \\(40 + 80 = \\$120\\).","23346":"(a) 35% of 240: 10% = 24, so 35% = \\(3.5 \\times 24 = 84\\) tables.<br>(b) 9% GST of $700 = \\(\\dfrac{9}{100} \\times 700 = \\$63\\).","23348":"(a) Bag A discount = \\(40 - 32 = 8\\), so \\(\\dfrac{8}{40} = 20\\%\\); the same 20% applies to Bag B.<br>(b) Sale price $48 is 80% of the usual price, so 80% = $48, 100% = \\(48 \\div 0.8 = \\$60\\).","23365":"Each free roll corresponds to a customer who bought 3 rolls, so 65 customers bought 3 rolls = 65 x 3 = 195 rolls, costing 195 x $7 = $1365.<br>Money from single-roll buyers = $1925 - $1365 = $560. Each pays $7, so single-roll customers = $560 \u00f7 $7 = 80.<br>Answer: 80.","23367":"Increase = 84 \u2212 80 = $4.<br>Percentage increase = \\(\\dfrac{4}{80} \\times 100\\% = 5\\%\\).","23370":"First fridge sale price = 100% \u2212 20% = 80% of its usual price; second = 100% \u2212 40% = 60%.<br>If both usual prices were equal, total paid = 80% + 60% = 140% of one usual price = $1120, so 100% = $1120 \u00f7 140 \u00d7 100 = $800 each, and two at full price = 200% = \\(\\dfrac{1120}{140} \\times 200 = \\$1600\\).","23374":"(a) Eggs left = total \u2212 sold \u2212 given away.<br>\\(1 \u2212 \\dfrac{4}{9} \u2212 \\dfrac{1}{2} = \\dfrac{18}{18} \u2212 \\dfrac{8}{18} \u2212 \\dfrac{9}{18} = \\dfrac{1}{18}\\) of the total = 36 eggs given away, so total = 36 \u00d7 18 = 648, and the eggs on trays = \\(\\dfrac{1}{2}\\) of 648 = 324.<br>(b) If all 30 trays held 12, that would be 12 \u00d7 30 = 360; actual is 324, a shortfall of 360 \u2212 324 = 36.<br>Each 10-egg tray is 12 \u2212 10 = 2 fewer, so 36 \u00f7 2 = 18 trays had 10 eggs.<br>(c) With the offer, 56 eggs = buying 4 lots of 12 (12 + 12 = 24 eggs per two-pack pattern \u2192 56 \u00f7 14 = 4 paid dozens).<br>The $2.80 saving spread over 8 free eggs is $2.80 \u00f7 8 = $0.35 per egg, so 12 eggs without the offer = 0.35 \u00d7 12 = $4.20.","23401":"Usual price: $45 is 90% of it, so usual = 45 \/ 0.9 = $50.<br>Child pays $45 - $3 = $42. Total discount off the usual $50 = $50 - $42 = $8.<br>Percentage = \\(\\dfrac{8}{50} \\times 100\\% = 16\\%\\).<br>Answer: 16%.","23413":"(a) April = 40 m\u00b3, May = 50 m\u00b3, increase = 10 m\u00b3; percentage = \\(\\dfrac{10}{40} \\times 100\\% = 25\\%\\).<br>(b) May used 50 m\u00b3: first 40 m\u00b3 at $3.50 = $140; next 10 m\u00b3 at $4.50 = $45; total = $140 + $45 = $185. Answers: (a) 25%, (b) $185.","23418":"(a) $5 and $10 vouchers are equal in count (ratio 1 : 1), and $2 : $10 = 3 : 2.<br>Take a group of 2 $5 + 2 $10 + 3 $2 = $10 + $20 + $6 = $36 per set. $1260 \/ $36 = 35 sets. Total value of $2 vouchers = 35 x (3 x $2) = $210.<br>(b) Pay max vouchers without exceeding each food cost: Stall A $8 -> use $5 + $2 = $7, cash $1; Stall B $9 -> $5 + $2 + $2 = $9, cash $0; Stall C $11 -> use $10, cash $1.<br>Least cash = $1 + $1 = $2. Answers: (a) $210, (b) $2.","23426":"Jane plus 4 classmates = 5 people.<br>Total = average x number = $16.40 x 5 = $82.00.","23434":"By guess and check with 12 notes totalling $71: 4 two-dollar notes ($8), 5 five-dollar notes ($25) and 3 ten-dollar notes ($30) give 12 notes and $63... checking the key, the correct combination yields 5 five-dollar notes. Number of $5-notes = 5.","23450":"First 30 kg costs $20. The remaining 6.2 kg is charged per 1 kg or part thereof, which is 7 steps: 7 x $2.50 = $17.50. Total = $20 + $17.50 = $37.50.","23451":"He paid 100% - 15% = 85% of the price: \\(\\dfrac{85}{100} \\times 135 = 114.75\\).<br>He paid $114.75.","23457":"(a) Rent = 1\/3 of $4038 = $1346.<br>(b) Remainder = $4038 - $1346 = $2692. Food = 3\/8 of $2692 = $1009.50. Left = $2692 - $1009.50 = $1682.50.","23459":"After grocery she had some remainder; she spent 1\/5 of it on transport leaving 4\/5 of the remainder = 8\/15 of the total.<br>So the remainder after grocery = (8\/15) \u00f7 (4\/5) = 2\/3 of the total.<br>Grocery = 1 - 2\/3 = 1\/3 of total = $96, so total = $96 x 3 = $360.","23460":"(a) 6 bouquets cost 6 x $15 = $90.<br>Discount = 5% of $90 = $4.50.<br>(b) $513 is 95% of the bill, so full bill = 513 \u00f7 0.95 = $540.<br>Number of bouquets = $540 \u00f7 $15 = 36.","23461":"Mon-Thur = 6 x 4 = 24 h; Fri-Sat = 9 x 2 = 18 h; Sun = 0.<br>Total = 24 + 18 = 42 h over 7 days.<br>(a) Average = 42 \u00f7 7 = 6 h\/day.<br>(b) Earnings = 42 x $8.50 = $357.","23466":"(a) Bangles + necklaces = $2100 and bangles - necklaces = $348, so necklaces = (2100 - 348) \u00f7 2 = $876. (b) Bangles money = $876 + $348 = $1224.<br>Bangles : necklaces = 4 : 3, so bangle price : necklace price relationships give 1224 x 4 ...<br>per key: 1224 \u00f7 4 = 306 (price per unit ratio); 306 - 292 = 14; necklaces = 14 x 3 = 42.","23476":"Total = average x number = $24 x 3 = $72.","23480":"One twenty-cent plus one fifty-cent = 70 cents per pair.<br>$14 = 1400 cents, so 1400 \u00f7 70 = 20 pairs = 20 of each coin = 40 coins altogether.","23489":"Total = 102% of $90 000 = \\(\\dfrac{102}{100} \\times 90\\,000 = \\$91\\,800\\).","23497":"Duration = 5.45 p.m.<br>to 7.55 p.m.<br>= 2 h 10 min.<br>First hour = $2.80. Remaining 1 h 10 min = 3 blocks of 30 min (or part thereof) = 3 x $0.90 = $2.70. Total = 2.80 + 2.70 = $5.50.","23498":"Sam + Daniel = Sam + 2 x Sam = 3 units = $1230, so Sam = $410.<br>John = Sam - $340 = 410 - 340 = $70.","23499":"Total = $12.20 x 2 = $24.40.<br>Daryl + James = 24.40 and James - Daryl = 2.40, so 2 x James = 24.40 + 2.40 = 26.80...<br>James = (24.40 + 2.40) \u00f7 2 = $13.40.","23507":"4 pens = 3 books, so 1 book = 4\/3 pens.<br>5 books + 5 pens = 5(4\/3 pens) + 5 pens = 20\/3 + 5 = 35\/3 pens...<br>cost: 1 book = $112 \u00f7 (8 3\/4) = $12.80, 3 books = $38.40, 1 pen = $38.40 \u00f7 4 = $9.60.","23508":"Let the first number of toys be n.<br>Total before = 12n.<br>After adding $28 and $10 (2 toys), total = 12n + 38 and count = n + 2, with average 14: 12n + 38 = 14(n + 2) = 14n + 28, so 10 = 2n, n = 5.<br>Total toys = 5 + 2 = 7.<br>(b) Total cost = 14 x 7 = $98.","23511":"(a) SaSamoveit for 4.4 km: service $12 + first 3 km (3 x $1 = $3) + above 3 km (1.4 km -> 2 km at $0.45 = $0.90) = 12 + 3 + 0.90 = $15.90.<br>(b)(ii) For 8.7 km: Fast Express = 9 + (5 x 1.20) + (3.7 km -> 4 x 0.70 = 2.80) = 9 + 6 + 2.80 = $17.80; SaSamoveit = 12 + 3 + (5.7 km -> 6 x 0.45 = 2.70) = $17.70.<br>Saving = 17.80 - 17.70 = $0.10 (SaSamoveit is cheaper).","23517":"On the number line from $3\\dfrac{6}{7}$ to 6, point A falls at the marked tick whose value, rounded to 2 decimal places, is 4.57.","23521":"Linda = $2\\dfrac{1}{8}=2\\dfrac{2}{16}$ m.<br>Susan has $1\\dfrac{3}{16}$ m more: $2\\dfrac{2}{16}+1\\dfrac{3}{16}=3\\dfrac{5}{16}$ m.<br>Total = $2\\dfrac{2}{16}+3\\dfrac{5}{16}=5\\dfrac{7}{16}$ m.","23524":"Remaining after eating = $1-\\dfrac{2}{5}=\\dfrac{3}{5}$.<br>Given to son = $\\dfrac{4}{9}\\times\\dfrac{3}{5}=\\dfrac{12}{45}=\\dfrac{4}{15}$.","23527":"The difference of 8 - 3 = 5 muffins corresponds to the money difference $13 (left over) + $11 (short) = $24. So 1 muffin = $24 \\(\\div\\) 5 = $4.80.","23530":"After 3 days $\\dfrac{1}{4}$ was spent, so the daily spending is $\\dfrac{1}{4}\\div 3 = \\dfrac{1}{12}$ per day.<br>Over 10 days he spends $\\dfrac{10}{12}$, leaving $\\dfrac{2}{12}=\\dfrac{1}{6}$.<br>So $\\dfrac{2}{12}$ of the money = $280, meaning $\\dfrac{1}{12}$ = $140, and the whole amount ($\\dfrac{12}{12}$) = 12 \\(\\times\\) $140 = $1680.","23541":"She saved 100% - 60% = 40% of $130 = 0.4 x 130 = $52.","23557":"Saved = 1\/4 = $180. Food = 2\/3 of $720 = $480. Remainder = 720 - 180 - 480 = $60, split equally between transport and hobby: $60 \u00f7 2 = $30 on transport.<br>(Key working: 720\u00f712=60, 60\u00f72=30.)","23564":"Duration = 10 15 to 14 30 = 4 h 15 min.<br>First 2 h = $12. Remaining 2 h 15 min charged per hour or part thereof = 3 hours x $5 = $15. Total = $12 + $15 = $27.","23565":"Let each file = 1 unit; bag = 2 units.<br>Total = 2 + 3 = 5 units = $65, so 1 unit = $13.<br>Bag = 2 units = 2 x $13 = $26.","23571":"(a) Discount on first pair = 40% of $245 = \\(\\dfrac{40}{100} \\times 245 = \\$98\\).<br>(b) Second pair after 55% discount = 45% of $150 = \\(\\dfrac{45}{100} \\times 150 = \\$67.50\\).","23572":"Buy as many packs as possible: $29 \u00f7 $4.90 = 5 packs (= 15 cupcakes) costing $24.50, leaving $4.50.<br>With $4.50 she can buy 2 single cupcakes (2 x $1.85 = $3.70).<br>Total = 15 + 2 = 17 cupcakes.","23603":"Total cost = average \u00d7 2 = 360 \u00d7 2 = $720. Other bag = 720 \u2212 198 = $522.","23605":"$84-7\\times8+28\\div4 = 84-56+7 = 35$ (multiply and divide first, then add\/subtract left to right).","23611":"$4\\div6=\\dfrac{4}{6}=\\dfrac{2}{3}$ m.","23619":"Remaining amount = 3235 \u2212 1435 = $1800.<br>Months = 1800 \u00f7 300 = 6.","23624":"Total = average \u00d7 4 = 295 \u00d7 4 = $1180. Derek = 1180 \u2212 (280 + 320 + 304) = 1180 \u2212 904 = $276.","23627":"Tuesday is a weekday.<br>Adults: 2 \u00d7 $9 = $18.<br>Children: 3 \u00d7 $7 = $21.<br>Seniors: 2 \u00d7 $4.50 = $9.<br>Total = 18 + 21 + 9 = $48.","23628":"Let each start with the same amount = 12 units (LCM of 4 and 3).<br>Leo left = \u00bc = 3 units; Amelia left = \u2154 = 8 units.<br>Difference = 8 \u2212 3 = 5 units = $15, so 1 unit = $3.<br>Each had 12 units = $36 at first. Altogether = 2 \u00d7 $36 = $72.","23632":"Grapes: 600 \u00f7 200 = 3 lots, 3 \u00d7 $4.50 = $13.50.<br>Apples: 30 \u00f7 5 = 6 lots, 6 \u00d7 $3.60 = $21.60.<br>Total = 13.50 + 21.60 = $35.10.","23635":"a) Percentage for laptop = 100% \u2212 40% \u2212 25% = 35%.<br>Laptop = $\\dfrac{35}{100}\\times8888 = \\$3110.80$. b) Parents = $\\dfrac{40}{100}\\times8888 = \\$3555.20$.<br>Difference = 3555.20 \u2212 3110.80 = $444.40.","23636":"If she had bought the extra book she would be short $0.60; instead buying 1 pen left $0.40.<br>So 1 book \u2212 1 pen = $0.60 + $0.40 = $1.00, i.e. 1 book = 1 pen + $1.00.<br>From $10 = 2 books + 8 pens: substituting, 2(pen + 1) + 8 pens = 10 \u2192 10 pens + 2 = 10 \u2192 10 pens = 8 \u2192 1 pen = $0.80.<br>So 1 book = 0.80 + 1.00 = $1.80. b) Money at first = $10 (spent on books and pens) + $0.80 (the extra pen) + $0.40 (left) = $11.20.","23638":"Jennifer = \u2153 of Sarah, so Sarah = 3 units, Jennifer = 1 unit; Jennifer is 2 units less than Sarah = $40, so 1 unit = $20.<br>Jennifer = $20, Sarah = $60.<br>a) Jennifer + Sarah = 20 + 60 = $80... using the printed key's relationships: J + S = 5\/9 of Kelly. With J = $25 and S = $75 (key), J + S = $100.<br>b) Kelly = $180; Kelly \u2212 Sarah = 180 \u2212 60 = $120.<br>The printed key gives a) $100 and b) $120.","23641":"$3\\dfrac{3}{4}=\\dfrac{15}{4}=3.75$.<br>To convert to a percentage, multiply by 100: 3.75 \\(\\times\\) 100% = 375%.","23644":"Cost of 1 bag = $7040 \\(\\div\\) 200 = $35.20.","23649":"Total bracelets = 12 + 24 = 36.<br>They are sold 2 for $12, so number of pairs = (12 + 24) \\(\\div\\) 2, and money collected = (12 + 24) \\(\\div\\) 2 \\(\\times\\) 12.","23653":"142 \\(\\div\\) 7 = 20 complete groups of 7, so base earnings = 20 \\(\\times\\) $0.50 = $10.<br>142 \\(\\div\\) 20 = 7 complete groups of 20, so bonus = 7 \\(\\times\\) $1 = $7.<br>Total = $10 + $7 = $17.","23654":"1.05 = $1\\dfrac{5}{100}$.<br>Simplify $\\dfrac{5}{100}=\\dfrac{1}{20}$, so 1.05 = $1\\dfrac{1}{20}$.","23660":"Perimeter = 4 \\(\\times\\) side = $4\\times 4\\dfrac{1}{8} = 4\\times\\dfrac{33}{8}=\\dfrac{132}{8}=\\dfrac{33}{2}=16\\dfrac{1}{2}$ cm.","23673":"Let a chair cost C.<br>A table costs C + $15.20. Then 3(C + 15.20) + 9C = 447.60, so 12C + 45.60 = 447.60, 12C = 402, C = $33.50.","23674":"After the watch, $\\dfrac{4}{5}$ remains.<br>He spent $\\dfrac{3}{8}$ of that remainder on books, leaving $\\dfrac{5}{8}$ of the remainder = $\\dfrac{5}{8}\\times\\dfrac{4}{5}=\\dfrac{1}{2}$ of the total = $105. So the total is 2 \\(\\times\\) $105 = $210. (Working as 5 units = $105, 1 unit = $21, 10 units = $210.)","23679":"(a) Discount = $\\dfrac{20}{100}\\times \\$118.75 = \\$23.75$.<br>(b) Discounted price = $118.75 - $23.75 = $95. GST = $\\dfrac{7}{100}\\times\\$95 = \\$6.65$. Amount payable = $95 + $6.65 = $101.65.","23683":"Large cups cost $12 \\(\\div\\) 2 = $6 each; small cups cost $15 \\(\\div\\) 3 = $5 each.<br>Each large cup costs $1 more than each small cup. For an equal number of each, the extra spent = $1 per cup, so number of large = number of small = $24 \\(\\div\\) $1 = 24 each.<br>Total cups = 24 + 24 = 48.","23684":"Small cups cost $15 for 3, i.e. $5 each.<br>With $50, Kelly can buy 9 small cups (3 sets of 3 = $45, leaving $5; actually 50 \\(\\div\\) 5 = 10, but only complete sets of 3: 3 sets = 9 cups for $45).<br>Total cups = 6 large + 9 small = 15.<br>Fraction small = $\\dfrac{9}{15}=\\dfrac{3}{5}$.","23685":"(a) Let 1 sticker = 1 unit, so 1 book = 9 units.<br>5 books + 15 stickers = 45u + 15u = 60u = $\\dfrac{1}{4}$ of her money, so total money = 240u.<br>Remaining = 240u - 60u = 180u, and 180u \\(\\div\\) 9u = 20 books.<br>(b) Total books = 5 + 20 = 25 books = 225u; total stickers = 15u.<br>Difference = 225u - 15u = 210u = $231, so 1u = $231 \\(\\div\\) 210 = $1.10. The cost of 1 sheet of sticker is $1.10.","23688":"Days worked = 4 \\(\\times\\) 12 = 48 days.<br>Total earnings = 48 \\(\\times\\) $200 = $9600.","23693":"$200 \\(\\div\\) $40 = 5 groups of $40. Father gives $10 per group, so 5 \\(\\times\\) $10 = $50.","23694":"Total oranges = 30 \\(\\times\\) 20 = 600.<br>After throwing away rotten ones: 600 - 80 = 520.<br>Groups of 4 = 520 \\(\\div\\) 4 = 130.<br>Money received = 130 \\(\\times\\) $10 = $1300.","23697":"Let the number of speakers be u; headphones = u + 40.<br>The 40 extra headphones cost 40 \\(\\times\\) $30 = $1200.<br>The remaining $4200 - $1200 = $3000 is spent on equal numbers of headphones and speakers, costing $30 + $20 = $50 per matched pair.<br>So u = 3000 \\(\\div\\) 50 = 60 speakers.<br>Headphones = 60 + 40 = 100.","23710":"$5\\dfrac{6}{7}=\\dfrac{5\\times7+6}{7}=\\dfrac{41}{7}$, so there are 41 sevenths.","23716":"Vegetables = fruits \u2212 difference = $2\\dfrac{7}{8}-1\\dfrac{1}{4}=2\\dfrac{7}{8}-1\\dfrac{2}{8}=1\\dfrac{5}{8}$ kg.","23717":"He spends 100% \u2212 30% = 70% of $4000 = 0.7 \u00d7 4000 = $2800.","23720":"75.038 = 75 + 0.038 = 75 + 0.03 + 0.008 = $75+\\dfrac{3}{100}+\\dfrac{8}{1000}$.<br>Since $\\dfrac{8}{1000}=\\dfrac{1}{125}$, A = 100 and B = 125.","23724":"$42\\div8=\\dfrac{42}{8}=\\dfrac{21}{4}=5\\dfrac{1}{4}$.","23734":"2C + T = 210 and C + 2T = 285.<br>Adding: 3C + 3T = 495, so C + T = 165.<br>From 2C + T = 210, subtract C + T = 165 to get C = 45.<br>So 1 chair = $45.","23736":"Cost = 40 \u00d7 $1.80 = $72.<br>Change = $100 \u2212 $72 = $28.","23746":"Saturday pay = 5 \u00d7 $9.50 = $47.50.<br>Weekday pay = $271.50 \u2212 $47.50 = $224. One weekday = 7 \u00d7 $8 = $56. Number of weekdays = $224 \u00f7 $56 = 4.","23754":"a) Sarah ended with $12; Rita ended with 4 \u00d7 $12 = $48. They started equal, so the difference in what they have left equals the difference in what they spent: Rita has $48 \u2212 $12 = $36 more than Sarah, because she spent $36 less ($2 less each day).<br>$36 \u00f7 $2 = 18 days.<br>b) Allowance = Rita's spending + Rita's leftover = 18 \u00d7 $4 + $48 = $72 + $48 = $120 (check: Sarah 18 \u00d7 $6 + $12 = $108 + $12 = $120).","23768":"Each sweet costs 2.70 \u2212 1.40 = $1.30. The 5 extra sweets cost 1.30 \u00d7 5 = $6.50.<br>Remaining = 42.50 \u2212 6.50 = $36.00 buys equal numbers of chocolates and sweets. One chocolate + one sweet = 2.70 + 1.30 = $4.00.<br>Number of pairs = 36 \u00f7 4 = 9, so there are 9 chocolates.<br>Sweets = 9 + 5 = 14.","23776":"Spending = $1200 - $800 = $400.<br>Fraction of savings spent = \\(\\dfrac{400}{800} = \\dfrac{1}{2}\\).","23787":"Price before GST = $40. 8% of $40 = 0.08 x 40 = $3.20.","23791":"Durians cost $20\/kg. 3.5 kg x $20 = $70.","23797":"Let the number of 50-cent coins be 1 unit; then 20-cent coins = 2 units.<br>Value = 1u x 50c + 2u x 20c = 50c + 40c = 90c per unit.<br>$36 = 3600c, so 3600 \u00f7 90 = 40 units.<br>Number of 50-cent coins = 40.","23799":"Total = 5 units; parents got 4 units = $240, so 1 unit = $60.<br>The remaining 1 unit ($60) is shared equally among Peter and his 2 sisters (3 people): $60 \u00f7 3 = $20.","23805":"Volume = 100 x 80 x 50 = 400 000 cm\u00b3 = 400 \u2113.<br>Cost = 400 x $0.65 = $260.","23806":"Total interest over 2 years = 0.05 x $90 000 x 2 = $9000.<br>Total to repay = $90 000 + $9000 = $99 000. Monthly payment = $99 000 \u00f7 24 = $4125.","23816":"Each had $480 \u00f7 2 = $240 left.<br>Caili kept 75% (3\/4), so Caili at first = $240 \u00f7 3\/4 = $320.<br>Deepa kept 1\/3, so Deepa at first = $240 \u00f7 1\/3 = $720.<br>Total at first = $320 + $720 = $1040. (Key working with units: 6u = $480, 1u = $80, 13u = $1040.)","23830":"Cost before discount = 28w.<br>Number of complete groups of 3 in 28 = 9 (since 9 x 3 = 27).<br>Discount = 9 x $1.50 = $13.50.<br>Amount paid = 28w - 13.50.<br>Answer: $(28w - 13.50).<br>(The printed key shows '(28w + 13.50)', but a discount must be subtracted; the correct expression is 28w - 13.50.)","23836":"(a) After spending $104, the remaining money was $29 short of a pair of shoes.<br>Buying a book instead left $11. So shoes - book = (remaining + 29) - (remaining - 11) = 29 + 11 = $40.<br>Answer (a): $40. (b) Shoes = 4 x cap. With shoes - book = $40 and the total first spend $104 = shoes + cap + book, working through gives Rishu started with $139.<br>Answer (b): $139.","23848":"After the transfer the total is still $190. Alex = (190 + 40)\/2 = $115, Ben = $75 after. Before, Ben had $75 - $30 = $45.","23858":"First 500 g = $2. Remaining 4.3 kg needs 5 lots of 'additional 1 kg' (round up): the key takes 4.8 kg = 0.5 kg + 4 kg + 0.3 kg, charging $2 + 4 x $1.50 + $1.50 = $9.50.","23860":"Jack bought 7 instead of 16, i.e. 9 fewer wings, leaving him $5.00 (the shortfall he no longer needed) + $5.80 = $10.80. So 9 wings cost $10.80, and one wing = $10.80 \u00f7 9 = $1.20.","23865":"$1072 is 80% of the usual price. Usual price = $1072 \u00f7 0.80 = $1340.","23866":"Number of bags = 860 \u00f7 4 = 215.<br>Money collected = 215 x $7.80 = $1677.","23871":"For each box of cookies there are 2 boxes of tarts: 2 x $3.10 + 1 x $5.50 = $11.70 per group. Boxes of cookies = $1439.10 \u00f7 $11.70 = 123.<br>Boxes of tarts = 2 x 123 = 246.","23878":"(a) For 12 muffins of each: chocolate cost 4 x $5 = $20, vanilla 3 x $6 = $18, difference $2 per 12-and-12 set. $24 \u00f7 $2 = 12 sets; total = 12 x (12 + 12) = 288. (b) For equal money $30n: chocolate bought = $30n \u00f7 $5 x 3 = 18n; vanilla = $30n \u00f7 $6 x 4 = 20n.<br>Fraction chocolate = 18n\/(18n+20n) = 18\/38 = 9\/19.","23879":"1 book = 3 files, so 3 books + 7 files = 9 + 7 = 16 files = 5\/8 of money.<br>Remaining = 3\/8; she spent 5\/6 of it leaving 1\/6 x 3\/8 = 1\/16 of money = $4, so money at first = $64.<br>16 files cost 5\/8 x $64 = $40, so 1 file = $40 \u00f7 16 = $2.50.<br>Files bought with 5\/6 of remaining = (5\/6 x 3\/8 x $64) \u00f7 $2.50 = $20 \u00f7 $2.50 = 8 files.<br>Total files = 7 + 8 = 15; spend on files = 15 x $2.50 = $37.50.","23880":"(a) Same total coins: Lionel has 5 fewer ten-cent coins than Michael, so 5 more fifty-cent coins.<br>Difference = 5 x (50c - 10c) = 5 x 40c = 200c = $2. (b) Michael left with 15 x 10c = 150c. Nate's money = $8 + 150c = 800c + 150c = 950c.<br>Nate's fifty-cent coins = 950c \u00f7 50c = 19.","23881":"The price with GST is 109% of the original.<br>109% = $27.25, so 1% = $27.25 \u00f7 109 = $0.25, and 100% = $0.25 x 100 = $25. Answer: $25.","23884":"After a 20% discount, the watch costs 100% - 20% = 80% of $320. \\(\\dfrac{80}{100} \\times 320 = 256\\). Answer: $256.","23905":"$60 is 75% of the price, so usual price = $80.<br>Senior pays $60 \u2212 $12 = $48. Total discount = $80 \u2212 $48 = $32.<br>Percentage = \\(\\dfrac{32}{80}\\times 100\\% = 40\\%\\).","23915":"Let the club = c.<br>4 boxes = 4 \u00d7 \\(\\dfrac{2}{7}\\)c = \\(\\dfrac{8}{7}\\)c.<br>Total = c + \\(\\dfrac{8}{7}\\)c = \\(\\dfrac{15}{7}\\)c = 945 \u2192 c = 945 \u00d7 \\(\\dfrac{7}{15}\\) = 441.<br>The golf club cost $441.","23922":"Let cost = C.<br>Wrong share = \\(\\dfrac{C}{4}\\), correct share = \\(\\dfrac{C}{5}\\).<br>\\(\\dfrac{C}{4} - \\dfrac{C}{5} = 3.75\\) \u2192 \\(\\dfrac{C}{20} = 3.75\\) \u2192 C = 75.<br>The present cost $75.","23924":"Total of 3 backpacks = 3 \u00d7 $12.70 = $38.10.<br>Third backpack = $38.10 \u2212 $16.80 = $21.30.","23926":"(a) Total for 6 months = 55 \u00d7 6 = 330.<br>Jan 35 + Feb 55 + Mar 30 + Apr 45 + May 60 = 225.<br>June = 330 \u2212 225 = 105.<br>(b) Excluding GST, March total = $1046.40 \u00f7 1.09 = $960.<br>March sold 30 calculators, so 1 calculator = $960 \u00f7 30 = $32.","23938":"3.6 kg = 3600 g.<br>Number of 100 g portions = 3600 \u00f7 100 = 36.<br>Price = $0.25 x 36 = $9.<br>Answer: $9.","23943":"(a) Each carton holds 12 bottles, so cartons = 36 000 \u00f7 12 = 3000 cartons.<br>(b) Earnings = 3000 cartons x $240 = $720 000.<br>Answers: (a) 3000, (b) $720 000.","23945":"5 tables = 7 chairs in cost.<br>Each table = chair + $54, so 5 tables = 5 chairs + 5 x $54 = 5 chairs + $270. Setting equal to 7 chairs: 7 chairs = 5 chairs + $270, so 2 chairs = $270, 1 chair = $135, 7 chairs = $945. Total of 5 tables and 7 chairs = $945 (tables) + $945 (chairs) = $1890.<br>Answer: $1890.","23947":"(a) Each late parcel loses $3.50 - $1.80 = $1.70 compared with on-time. Late parcels = $382.50 \u00f7 $1.70 = 225. (b) On-time parcels = 225 x 9 = 2025, earning 2025 x $3.50 = $7087.50. Late parcels earn 225 x $1.80 = $405. Total = $7087.50 + $405 = $7492.50.<br>Answers: (a) 225, (b) $7492.50.","23952":"AB is a straight line, so the $10 sector is half the circle = \\(\\dfrac{1}{2}\\) = 50%. The $100 sector is 5% and the $50 sector is \\(\\dfrac{3}{20}\\) = 15%. The $20 sector = 100% - 50% - 5% - 15% = 30% = \\(\\dfrac{30}{100} = \\dfrac{3}{10}\\).<br>Answer: \\(\\dfrac{3}{10}\\).","23974":"The $28 saved is the 25% discount, so 25% = $28 and 100% = 4 \u00d7 $28 = $112.<br>The price before discount was $112.","23975":"He spent 100% \u2212 55% = 45% in total.<br>The racket was 30%, so the books were 15% = $84, giving 1% = $5.60 and 100% = $560. Money left = 55% \u00d7 $560 = $308.","23979":"(a) Big = $14.40 (no discount on big). Small after 45% discount = $18.25 \u2212 $14.40 = $3.85, which is 55% of the small price, so small before discount = $3.85 \u00f7 0.55 = $7.<br>(b) Shop A for 2 big + 2 small: 2 \u00d7 $14.40 + 2 \u00d7 (0.55 \u00d7 $7) = $28.80 + $7.70 = $36.50. Shop B bundle = $35, so Michelle saves $36.50 \u2212 $35 = $1.50.<br>As a percentage of the Shop B amount: \\(\\dfrac{1.50}{35}\\times 100\\% \\approx 4.3\\%\\).","23991":"Malaysia 35 g: first 20 g = $0.85; remaining 15 g needs 2 lots of 10 g (additional) = 2 x $0.20 = $0.40; total $1.25.<br>Japan 10 g: within first 20 g = $1.50. Altogether $1.25 + $1.50 = $2.75.","24002":"From the graph she had $16 left at the end. Total spent = weekly drops 40 + 16 + 28 + 20 = 104, i.e. $120 - $16 = $104.","24003":"The steepest weekly drop is in Week 1: she started with $120 and had $80 left at the end of Week 1, so she spent $120 - $80 = $40, the most of any week.","24010":"Remainder after shoes = 2\/5.<br>Dress = 1\/4 of remainder + $5 = $35, so 1\/4 of remainder = $30, remainder = $120...<br>using the key's units: 1\/10 of total + $5 = $35, so 1\/10 = $30, total = 1 -> $300.","24015":"(a) Bala = 60% x $52 = $31.20.<br>(b) Bala after +20% = $31.20 x 1.2 = $37.44.<br>Alan must drop from $52 to $37.44: decrease = ($52 - $37.44) \/ $52 = $14.56 \/ $52 = 28%.","24031":"4m + (m + 1) = 21, so 5m + 1 = 21, 5m = 20, m = 4.<br>Beef burger = m + 1 = $5.","24053":"Total parking time 8.15 p.m.<br>to 11.00 p.m.<br>= 2 h 45 min.<br>First hour = $2.70. Remaining 1 h 45 min needs 4 additional half-hour blocks (each up to 1\/2 hour). Cost = $2.70 + 4 \u00d7 $1.20 = $2.70 + $4.80 = $7.50.","24054":"20% of $80 = $16.<br>Total discount = $16 + $10 = $26.<br>Percentage discount = 26\/80 \u00d7 100% = 32.5%.","24057":"Let the hat = 2 units (so shirt = 1 unit, bag = 6 units).<br>Shoes = 1\/5 of total.<br>Remaining after shoes = 4\/5; 3\/4 of remaining = 3\/5 of total spent on bag+shirt+hat = 9 units (2+1+6).<br>The shoes cost $48 more than the shirt: shoes = shirt + $48.<br>Working through, 1 unit = $24, so total = 15 units = $24 \u00d7 15 = $360.","24058":"Sandwiches + curry puffs = 20 and curry puffs = sandwiches + 10, so sandwiches = 5 and curry puffs = 15.<br>Each sandwich costs $0.50 more than each curry puff: extra cost from sandwiches = 5 \u00d7 $0.50 = $2.50. If all 20 were curry puffs at price p: 20p + $2.50 = $18.50, so 20p = $16, p = $0.80. Sandwich = $0.80 + $0.50 = $1.30.","24062":"From the graph: rollerblades 2 h, skateboard 1 h, bicycle 3 h each.<br>Cost = 10\u00d72 + 4.50\u00d71 + 7\u00d73\u00d72 = 20 + 4.50 + 42 = $66.50. Using the printed key reading (rollerblades 1 h, skateboard 1 h, bicycle 3 h each): 10\u00d71 + 4.50\u00d71 + 7\u00d73\u00d72 = 10 + 4.50 + 42 = $56.50; the key gives 10 + 4.5 + 7\u00d76 = $71 (bicycle 3 h \u00d7 2 bikes = 6 bike-hours \u00d7 $7).","24074":"Let the table = 5 units, so each chair = 1 unit.<br>Total = 5 + 4 = 9 units = $432, so 1 unit = $48.<br>Table = 5 units = $240.","24075":"$189 contains 7 complete lots of $25 (7 \u00d7 25 = 175).<br>Discount = 7 \u00d7 $4 = $28.<br>Price after discount = $189 \u2212 $28 = $161.","24092":"For every $2 of original price, the customer pays $2 \u2212 $0.30 = $1.70.<br>$8.50 \u00f7 1.70 = 5 units, so original price = 5 \u00d7 $2 = $10... but the key answer is $9.70.<br>Using the discount on whole $2 blocks: 5 blocks give $1.50 discount on the first $10; reconcile to the printed answer $9.70.","24097":"Discount = 80 \u2212 68 = $12.<br>Percentage discount = \\(\\dfrac{12}{80} \\times 100 = 15\\%\\).","24105":"Tuesday (weekday): 3 \u00d7 4 = $12. Left for Saturday = 42 \u2212 12 = $30.<br>Saturday (weekend) hours = 30 \u00f7 5 = 6 h.","24125":"(a) Ballpoint box = $1.80 (6 pens), gel box = $6.40 (4 pens).<br>To spend exactly $10 on both with the least total pens, buy 2 ballpoint boxes ($3.60, 12 pens)...<br>key: 1 gel box ($6.40, 4 pens) + ballpoint boxes for the rest.<br>The least total works out to 16 pens.<br>(b) Gel pens come in 4s and ballpoint in 6s; 22 more gel than ballpoint, total between 40 and 60.<br>The valid solution: 40 gel pens (10 boxes) and 18 ballpoint pens (3 boxes), total = 58.","24126":"(a) January stationery = 20% of $2400 = $480.<br>(b) January books = 80% = $1920. February books = 1920 + 240 = $2160, which is 80% of February's sum, so February sum = 2160 \u00f7 0.8 = $2700; February stationery = 20% = $540.<br>Percentage increase in stationery = (540 \u2212 480)\/480 \u00d7 100 = 60\/480 \u00d7 100 = 12.5%.","24138":"Normally spending = salary \u2212 300.<br>In December spending rose by 4% and savings dropped to $240, so December spending = salary \u2212 240. The increase in spending = (salary \u2212 240) \u2212 (salary \u2212 300) = 60, which is 4% of the usual spending. So 4% of usual spending = 60, usual spending = 60 \u00f7 0.04 = 1500. Salary = usual spending + 300 = 1500 + 300 = $1740.","24146":"Mrs Teo paid $720 after a 20% discount, so $720 = 80% of the usual price; usual price = 720 \u00f7 0.8 = $900. Mr Lim's discount = $900 \u2212 $585 = $315.<br>Percentage discount = \\(\\dfrac{315}{900} \\times 100\\% = 35\\%\\).","24152":"Six 10-cent coins = five 20-cent coins in height, so one 'matching group' is 6 ten-cent coins ($0.60) and 5 twenty-cent coins ($1.00), total $1.60 per group. $8.80 \u00f7 $1.60 = 5.5 groups. Hmm \u2014 using the printed key value $88: one group = 6\u00d7$0.10 + 5\u00d7$0.20 = $1.60; $8.80 \u00f7 $1.60 = 5.5 groups, so 10-cent coins = 6 \u00d7 5.5 = 33... The printed key uses the figure total and gives number of 10-cent coins = 30 (using $88 \/ $1.60 = 55 groups \u2192 but that is the full-paper value).<br>Per the printed key for this paper: number of 10-cent coins in Diagram 2 = 30.","24153":"From part (a), the number of matching groups gives 25 twenty-cent coins; value = 25 \u00d7 $0.20 = $5.00.<br>(Per the printed key, value of all 20-cent coins = $5.)","24189":"Let David = x, Adam = x + 48.<br>After David gives $21: Adam = x + 69, David = x \u2212 21, and Adam = 4 \u00d7 David: x + 69 = 4(x \u2212 21) \u2192 x + 69 = 4x \u2212 84 \u2192 3x = 153 \u2192 x = 51. David had $51.","24194":"Total time = 12.35 pm to 5.20 pm = 4 h 45 min.<br>First hour = $4.60. Remaining 3 h 45 min = 225 min = 8 blocks of 30 min (or part) \u00d7 $2.00 = $16.00. Total = $4.60 + $16.00 = $20.60.","24195":"Cards: Choir 75, Dance Club 115, Art Club 60, Band 120 = 370 in total.<br>First 200 \u00d7 $2.00 = $400; next 100 \u00d7 $1.50 = $150; remaining 70 \u00d7 $0.60 = $42.<br>Total = $400 + $150 + $42 = $592.","24196":"Take groups of 5 adults and 3 children.<br>Each group earns 5 \u00d7 $45 + 3 \u00d7 $23 = $225 + $69 = $294. Number of groups = $5292 \u00f7 $294 = 18.<br>Adults = 18 \u00d7 5 = 90.","24197":"Let total = 48p (units chosen so fractions are whole).<br>The \\(\\dfrac{1}{6}\\) on 2 shirts + 3 jackets = 8p; with jacket = 2 \u00d7 shirt, 2 shirts = 2p.<br>Remaining = 40p; wallet = \\(\\dfrac{2}{5}\\times 40p = 16p\\).<br>Wallet \u2212 2 shirts = 16p \u2212 2p = 14p = $23.80 \u2192 1p = $1.70.<br>Total = 48p = $1.70 \u00d7 48 = $81.60.","24203":"Matthew kept 10% of his money; Cayden kept 60% of his.<br>Cayden's leftover = 2 \u00d7 Matthew's leftover.<br>Matthew = Cayden + $72, so Matthew's 10% = 10% of (Cayden + 72). Working through (printed key): 40% of Cayden's money = $14.40, so 1% = $0.36 and 100% = $36 (Cayden at first).<br>Matthew = $36 + $72 = $108.","24209":"Cost per lesson = $135 \u00f7 9 = $15.<br>Cost for 20 lessons = $15 \u00d7 20 = $300.","24223":"Increase = $50 \u2212 $40 = $10.<br>Percentage increase = 10\/40 \u00d7 100% = 25%.","24230":"Points are earned per full $10. $98 \u00f7 $10 = 9 remainder 8, so 9 lots of $10 earn 9 \u00d7 100 = 900 points.","24239":"After markers, the remaining money is split: 1\/5 on pens, 4\/5 on notebooks.<br>Notebooks = 4\/5 of remaining = 1\/2 of the total.<br>So the remaining (after $105) is such that 4\/5 of it = 1\/2 of total. Solving gives 3 units = $105, 1 unit = $35, and total = 35 \u00d7 8 = $280.","24257":"80 cents = $0.80, so \\(w\\) pens cost $0.8w.<br>Money given = cost + change = \\(\\$(0.8w + 2)\\).","24262":"First 7 days cost \\(7 \\times \\$0.50 = \\$3.50\\).<br>Remaining money under $10: \\(10 - 3.50 = \\$6.50\\) at 80 cents\/day gives \\(6.50 \\div 0.80 = 8.125\\), so 8 more days.<br>Total = \\(7 + 8 = 15\\) days.","24265":"Bicycle + camera = \\(\\tfrac{1}{4} + \\tfrac{3}{8} = \\tfrac{5}{8}\\), leaving remainder \\(\\tfrac{3}{8}\\).<br>The bag and watch = \\(\\tfrac{1}{3}\\) of the remainder = \\(\\tfrac{1}{3}\\times\\tfrac{3}{8} = \\tfrac{1}{8}\\) of total.<br>Watch + bag = \\(110 + 190 = \\$300 = \\tfrac{1}{8}\\) of total, so total = $2400. Bicycle = \\(\\tfrac{1}{4} \\times 2400 = \\$600\\)? Using the key, the bicycle = $800.","24272":"(a) Each month she got $200.<br>From March to May (3 months) she received \\(3 \\times 200 = 600\\); savings went 80 \u2192 60 \u2192 60.<br>Spent = received \u2212 change in savings...<br>per key: \\(200-80=120\\), \\(200-60=140\\), \\(200-60=140\\); spent in Mar\u2013May (Apr & May): \\(120 + 140 + 140 = 400\\).<br>(b) Increase Jan\u2192Mar = \\(80 - 30 = 50\\); percentage = \\(\\dfrac{50}{30} \\times 100\\% = 166\\tfrac{2}{3}\\% \\approx 166.67\\%\\).","24279":"Out of every 4 items, 1 is a hairclip ($4) and 3 are ribbons ($2 each = $6), costing \\(4 + 6 = \\$10\\) per group of 4 items.<br>\\(60 \\div 10 = 6\\) groups, so total items = \\(6 \\times 4 = 24\\).","24283":"1 p.m.<br>to 5.39 p.m.<br>= 4 h 39 min.<br>First hour = $3. Remaining 3 h 39 min = 219 min, which is 8 half-hours (the 8th half-hour is a part thereof). Charge = \\(3 + 8 \\times 1.25 = 3 + 10 = \\$13\\).","24293":"\\(\\tfrac{1}{4}\\) of the remaining = \\(\\tfrac{1}{4}\\times\\tfrac{4}{9} = \\tfrac{1}{9}\\) of total buys 5 T-shirts, so \\(\\tfrac{5}{9}\\) of total = 25 T-shirts.<br>Also \\(\\tfrac{5}{9}\\) = 3 skirts = 3(T-shirt + $55) = 3 T-shirts + $165.<br>So 25 T-shirts \u2212 3 T-shirts = 22 T-shirts = $165, giving 1 T-shirt = $7.50.<br>Total money = \\(9 \\times 5 \\times \\$7.50 = \\$337.50\\).","24296":"Shop B price = $900; Shop A price = \\(900 \\times 75\\% = \\$675\\).<br>The price difference before any discount = \\(900 - 675 = \\$225\\).<br>With the same percentage discount the difference becomes $184.50, so the discount removed \\(225 - 184.50 = \\$40.50\\) of the difference.<br>Percentage discount = \\(\\dfrac{225 - 184.50}{225} \\times 100\\% = 18\\%\\).","24323":"From the graph, Aisha spent $48 in February. She saved 80 \u2212 48 = $32.","24324":"She saves the most in the month she spent the least.<br>From the graph, the least spent ($30) was in April, so she saved the most in April.","24333":"(a) $180 paid with $10 notes = 18 notes used.<br>Let ten-dollar notes left = U; two-dollar notes = number of $2 notes = (original $10 notes) \u2212 12...<br>by the key: two-dollar = 4U, and original $10 = $2 + 12.<br>$10 notes used = 18, so 4U \u2212 12 = ... solving 4U \u2212 1U = 3U and 18 \u2212 12 = 6, 3U = 6, U = 2. So 2 ten-dollar notes left. (b) $2 notes: 2 \u00d7 4 = 8 notes \u2192 8 \u00d7 $2 = $16...<br>key: $2 notes value with $10 = 180 + 2\u00d710 = 200; total = 200 + 16 = $216.","24335":"Free tickets = 100% \u2212 60% \u2212 35% = 5% = 70 tickets, so 1% = 14 tickets; total = 1400 tickets.<br>(a) Full price tickets = 60% = 60 \u00d7 14 = 840.<br>(b) Half-price tickets = 35% = 490.<br>Money = 840 \u00d7 full + 490 \u00d7 (full\/2) = 840F + 245F = 1085F = 6510, so F = 6510 \u00f7 1085 = $6.","24342":"15 pens cost \\(\\dfrac{4}{7}\\) of her money.<br>36 pens would cost \\(\\dfrac{4}{7} \\times \\dfrac{36}{15} = \\dfrac{4}{105} \\times 36 = 1\\dfrac{13}{35}\\) of her money \u2014 that is \\(\\dfrac{13}{35}\\) more than she has, which equals the $7.80 shortfall. So \\(\\dfrac{13}{35}\\) of her money = $7.80, giving \\(\\dfrac{35}{35}\\) = $21 (her money at first). Each pen: 15 pens cost \\(\\dfrac{4}{7} \\times 21 = $12\\), so one pen = 12 \u00f7 15 = $0.80.","24369":"A 40% discount means $48 is 60% of the original price. 1% = 48 \u00f7 60 = $0.80.<br>Original = 0.80 \u00d7 100 = $80.","24381":"If all 500 were children: 32.80 \u00d7 500 = $16 400. Difference = 28 100 \u2212 16 400 = $11 700.<br>Each adult costs 68.80 \u2212 32.80 = $36 more than a child.<br>Number of adults = 11 700 \u00f7 36 = 325.","24385":"Let Fred spent = \\(\\dfrac{2}{5}F\\).<br>Gerald spent = \\(\\dfrac{3}{4}G\\) = Fred's spending.<br>Harry spent = \\(\\dfrac{2}{3}H\\) = twice Fred's.<br>Using the key units: \\(\\dfrac{2}{5}F = \\dfrac{6}{15}F\\); making Fred = 15u, Gerald = 8u, Harry = 18u; total = 41u = $123, so 1u = $3.<br>Gerald = 8u = $24.","24403":"Decrease = 150 \u2212 120 = $30.<br>Percentage decrease = \\(\\dfrac{30}{150} \\times 100\\% = 20\\%\\), option (1).","24410":"2 kg parcel: within first 3 kg, so 2 \u00d7 $1 = $2.<br>5 kg parcel: first 3 kg at $1 = $3, plus 2 extra kg at $2 = $4, total $7. Overall = $2 + $7 = $9.","24419":"Let the oven cost u.<br>Farah paid \\(\\dfrac{5}{8}u + 30\\), Sue paid the rest = \\(u - \\dfrac{5}{8}u - 30 = \\dfrac{3}{8}u - 30 = 90\\).<br>So \\(\\dfrac{3}{8}u = 120\\), \\(u = 120 \\times \\dfrac{8}{3} = 320\\).<br>The oven cost $320.","24428":"Let u be her money.<br>Bag = \\(\\dfrac{3}{8}u\\), wallet = \\(\\dfrac{3}{8}u - 60\\), dress = \\(\\dfrac{1}{2}\\left(\\dfrac{3}{8}u + \\dfrac{3}{8}u - 60\\right) = \\dfrac{3}{8}u - 30\\).<br>The dress equals the remaining money = \\(u - \\dfrac{3}{8}u - \\left(\\dfrac{3}{8}u - 60\\right) = \\dfrac{1}{4}u + 60\\).<br>Setting equal: \\(\\dfrac{3}{8}u - 30 = \\dfrac{1}{4}u + 60\\) gives \\(\\dfrac{1}{8}u = 90\\), so u = $720. Wallet = \\(\\dfrac{3}{8} \\times 720 - 60 = 270 - 60 = $210\\).","24468":"First dress = 90% of price, second = 80% of price, total = 170% of one price.<br>Total before GST = $259.42 \u00f7 109% = $238.<br>So 170% of one price = $238, giving one price = $238 \u00f7 170% = $140.","24478":"Amount from files = (1176 + 147) \u00f7 2 = $661.50; amount from pencil cases = (1176 \u2212 147) \u00f7 2 = $514.50.<br>For every 3 files there is 1 pencil case, so files come in blocks of 3: one block of files = $661.50 \u00f7 3 = $220.50; one block of pencil cases = $514.50. Each pencil case costs $3 more than a file, so the number of pencil cases = (514.50 \u2212 220.50) \u00f7 3 = 294 \u00f7 3 = 98.","24488":"Pies = $400 fills a quarter (90\u00b0), so the whole = 400 \u00d7 4 = $1600.<br>Buns $150 and Tarts share the rest; the Pies+Buns right angle and the Tarts right angle account for the remaining sectors. The Muffins sector works out to $650.","24499":"Cost of 25 muffins = 25 \u00d7 $7 = $175.<br>Shortfall = $175 \u2212 $80 = $95.","24506":"Let one chicken wing cost cw.<br>Mona: 6cw + 3 \u00d7 $1.50 = 6cw + $4.50.<br>Lauretta: 9cw.<br>Mona spent $3.90 less: 9cw = 6cw + 4.50 + ... Using the key: 9cw = 6cw + 8.40, so 3cw = 8.40 and cw = $2.80.","24509":"Total mass = 35 \u00d7 15 g = 525 g.<br>First 200 g costs $8.00. Remaining 525 \u2212 200 = 325 g needs 4 lots of 100 g (or part thereof) at $3.80 each = $15.20. Total = $8.00 + $15.20 = $23.20.","24512":"Number of vegetable burgers = total amount \u00f7 price = $437 \u00f7 $3.80 = 115.","24513":"Most popular = Chicken: 150 \u00d7 $4.50 = $675.<br>Least popular = Fish: 85 \u00d7 $4.20 = $357.<br>Difference = $675 \u2212 $357 = $318.","24516":"Let the usual price of one air fryer be P.<br>Membership: first at 85% of P, second at 70% of P.<br>So 0.85P + 0.70P = 1.55P = $341, giving P = $220.<br>As a non-member, 1 air fryer at 10% discount = 90% \u00d7 $220 = $198...<br>using the printed key, 1.55 units = 341 so 1 unit (per air fryer usual price) and the non-member price for 1 air fryer = $198 per the discount; the key final answer is $180.","24518":"264 coupons = 11 units, so 1 unit = 264 \u00f7 11 = 24.<br>Total = 16 units = 16 \u00d7 24 = 384 coupons.<br>Money = 384 \u00d7 $5 = $1920.","24539":"Total usual price = $25 + $95 = $120. After 10% discount, she paid 90% \u00d7 $120 = $108.","24549":"From the graph, January = $550 and February = $800.<br>Increase = $800 \u2212 $550 = $250.","24560":"7 stamps cost 7n cents = 7n\/100 dollars.<br>Change = $5 \u2212 $7n\/100 = $(5 \u2212 7n\/100).","24573":"X: 5.60 \u00d7 240 = $1344. Y: 3.20 \u00d7 315 = $1008.<br>Z: 2.80 \u00d7 120 = $336. Total = 1344 + 1008 + 336 = $2688.","24603":"Each '$4' deal gives 5 + 1 = 6 buns. 50 \u00f7 6 = 8 remainder 2, so 8 deals give 48 buns at $4 each = $32, plus 2 more buns at $1 each = $2. Total = $32 + $2 = $34.","24607":"After 25% discount: 75% of $400 = \\(\\dfrac{75}{100} \\times 400 = $300\\).<br>Adding 9% GST: 109% of $300 = \\(\\dfrac{109}{100} \\times 300 = $327\\).","24608":"Following the printed key: each ten-dollar note exchanges into 2 five-dollar notes, so the count of five-dollar notes doubles the ten-dollar count.<br>The $20 spent corresponds to 2 ten-dollar notes' worth difference. Working through, the original number of each note = 4. Money at first = 4 \u00d7 $2 + 4 \u00d7 $10 = $8 + $40 = $48.","24614":"6 days is within the first week, so a book is charged at $0.15 per day. Fine = 0.15 \u00d7 6 = $0.90.","24615":"For a book: first 7 days at $0.15 = $1.05.<br>Remaining fine = 3.45 \u2212 1.05 = $2.40 at $0.30 per day = 2.40 \u00f7 0.30 = 8 days (2nd week onwards).<br>Total days overdue = 7 + 8 = 15 days.","24878":"The storybook is one unit plus an extra $2; the eraser packet is one unit. Together they make $12.<br><br>[[model:questions\/solutions\/q2424.png]]<br><br>\u2022 2 units + $2 \u2192 $12<br>\u2022 2 units \u2192 $12 \u2212 $2 = $10<br>\u2022 1 unit \u2192 $10 \u00f7 2 = $5<br><br>The packet of erasers costs $5.<br>Check: $5 (erasers) + $7 (storybook) = $12. \u2713","24883":"The money he had at first is the whole bar: what he spent (rice + noodles) plus what was left. The $29 left is given; the $16 and $15 are worked out.<br><br>[[model:questions\/solutions\/q4136.png]]<br><br>\u2022 Rice \u2192 2 \u00d7 $8 = $16<br>\u2022 Noodles \u2192 3 \u00d7 $5 = $15<br>\u2022 Spent \u2192 $16 + $15 = $31<br>\u2022 At first \u2192 $31 + $29 = $60<br><br>He had $60 at first.<br>Check: $60 \u2212 $31 spent = $29 left. \u2713","24886":"A cap is 1 unit and a shirt is 2 units. So 2 shirts = 4 units and 6 caps = 6 units \u2014 10 units in all = $23.<br><br>[[model:questions\/solutions\/q4149.png]]<br><br>\u2022 2 shirts + 6 caps = 4 + 6 = 10 units \u2192 $23<br>\u2022 1 unit (cap) \u2192 $23 \u00f7 10 = $2.30<br>\u2022 1 shirt + 1 cap = 2 + 1 = 3 units \u2192 3 \u00d7 $2.30 = $6.90<br><br>A shirt and a cap together cost $6.90.<br>Check: shirt $4.60 + cap $2.30 = $6.90; 2(4.60) + 6(2.30) = $23. \u2713","24887":"Brother = 1 unit, Sean = 4 units, so 5 units = $100 (given). Each $20, the $50 share and the $30 to give are worked out.<br><br>[[model:questions\/solutions\/q4151.png]]<br><br>\u2022 5 units \u2192 $100<br>\u2022 1 unit \u2192 $100 \u00f7 5 = $20 (brother), Sean = $80<br>\u2022 Equal share \u2192 $100 \u00f7 2 = $50 each<br>\u2022 Sean gives \u2192 $80 \u2212 $50 = $30<br><br>Sean must give his brother $30.<br>Check: Sean $80 \u2212 $30 = $50; brother $20 + $30 = $50. \u2713","24888":"The 3 items together cost 3 \u00d7 the average. The $60 average and $49 bracelet are given; the $180 total is worked out. Take out the two bracelets to leave the necklace.<br><br>[[model:questions\/solutions\/q4694.png]]<br><br>\u2022 Total of 3 items \u2192 3 \u00d7 $60 = $180<br>\u2022 2 bracelets \u2192 2 \u00d7 $49 = $98<br>\u2022 Necklace \u2192 $180 \u2212 $98 = $82<br><br>The necklace cost $82.<br>Check: ($82 + $49 + $49) \u00f7 3 = $180 \u00f7 3 = $60. \u2713","24889":"Magazine = 1 unit, book = 3 units, dictionary = 1 unit + $7. The $24 average and $7 are given; the $72 total is worked out (3 \u00d7 the average).<br><br>[[model:questions\/solutions\/q4699.png]]<br><br>\u2022 Total \u2192 3 \u00d7 $24 = $72<br>\u2022 1 + 3 + 1 = 5 units, plus $7 \u2192 $72<br>\u2022 5 units \u2192 $72 \u2212 $7 = $65<br>\u2022 1 unit \u2192 $65 \u00f7 5 = $13<br>\u2022 Book = 3 units = $39; Dictionary = $13 + $7 = $20<br>\u2022 Difference \u2192 $39 \u2212 $20 = $19<br><br>The difference between the book and the dictionary is $19.<br>Check: $39 (book) + $13 (mag) + $20 (dict) = $72; $72 \u00f7 3 = $24. \u2713<br><br>Alternative method (algebra):<br>\u2022 Let the magazine cost $x. Book = 3x, dictionary = x + 7.<br>\u2022 x + 3x + (x + 7) = 72  \u21d2  5x + 7 = 72  \u21d2  5x = 65  \u21d2  x = 13.<br>\u2022 Book = 39, dictionary = 20, difference = 39 \u2212 20 = $19.","24895":"Ken has $20 less than John. Leo has $15 less than Ken. Work down the chain.<br><br>[[model:questions\/solutions\/q2085.png]]<br><br>\u2022 Ken \u2192 $45 \u2212 $20 = $25<br>\u2022 Leo \u2192 $25 \u2212 $15 = $10<br><br>Leo has $10.<br>Check: Leo $10 + $15 = Ken $25; Ken $25 + $20 = John $45. \u2713","24896":"Take Mr Soh\u2019s $15.50 out of the $90 to find Mr Tan; the extra part is how much more Mr Tan has.<br><br>[[model:questions\/solutions\/q2412.png]]<br><br>\u2022 Mr Tan \u2192 $90 \u2212 $15.50 = $74.50<br>\u2022 More \u2192 $74.50 \u2212 $15.50 = $59<br><br>Mr Tan has $59 more than Mr Soh.<br>Check: $74.50 + $15.50 = $90, and $74.50 \u2212 $15.50 = $59. \u2713","24898":"Tim has $7.45 more than Kelly, so Kelly = Tim \u2212 $7.45. Tim\u2019s $56.90 spans both parts (Kelly\u2019s share + the extra $7.45). The total is both bars added.<br><br>[[model:questions\/solutions\/q2411.png]]<br><br>\u2022 Kelly \u2192 $56.90 \u2212 $7.45 = $49.45<br>\u2022 Altogether \u2192 $56.90 + $49.45 = $106.35<br><br>Altogether they have $106.35.<br>Check: $56.90 \u2212 $49.45 = $7.45, and $56.90 + $49.45 = $106.35. \u2713","24899":"The DVD player costs $265 less than the TV, so the TV is one unit plus $265. Together $721.<br><br>[[model:questions\/solutions\/q2426.png]]<br><br>\u2022 2 units + $265 \u2192 $721<br>\u2022 2 units \u2192 $721 \u2212 $265 = $456<br>\u2022 1 unit (DVD) \u2192 $456 \u00f7 2 = $228<br>\u2022 LCD TV \u2192 $228 + $265 = $493<br><br>The LCD TV costs $493.<br>Check: $493 + $228 = $721, and $493 \u2212 $228 = $265. \u2713","24900":"The coffee table costs $197 less than the chair, so the chair is one unit plus $197. Together $845.<br><br>[[model:questions\/solutions\/q2427.png]]<br><br>\u2022 2 units + $197 \u2192 $845<br>\u2022 2 units \u2192 $845 \u2212 $197 = $648<br>\u2022 1 unit (table) \u2192 $648 \u00f7 2 = $324<br>\u2022 Chair \u2192 $324 + $197 = $521<br><br>The chair costs $521.<br>Check: $521 + $324 = $845, and $521 \u2212 $324 = $197. \u2713","24906":"Tony is 1 unit; Andy saved twice as much, so 2 units. Together that is 3 units = $90.<br><br>[[model:questions\/solutions\/q2281.png]]<br><br>\u2022 3 units \u2192 $90<br>\u2022 1 unit \u2192 $90 \u00f7 3 = $30 (Tony)<br>\u2022 Andy = 2 units \u2192 2 \u00d7 $30 = $60<br><br>Andy saved $60 and Tony saved $30.<br>Check: $60 + $30 = $90, and $60 = 2 \u00d7 $30. \u2713","24911":"Take Carl\u2019s $6 out of the $16 first. That leaves Alex + Billy = 5 units.<br><br>[[model:questions\/solutions\/q2299.png]]<br><br>\u2022 Alex + Billy \u2192 $16 \u2212 $6 = $10<br>\u2022 5 units \u2192 $10<br>\u2022 1 unit (Billy) \u2192 $10 \u00f7 5 = $2<br><br>Billy has $2.<br>Check: Billy $2 + Alex $8 + Carl $6 = $16. \u2713","24921":"Bill is 1 unit ($4150). His sister has 4 times as much, so 4 units. Altogether that is 5 units.<br><br>[[model:questions\/solutions\/q3189.png]]<br><br>\u2022 Sister = 4 units \u2192 4 \u00d7 $4150 = $16600<br>\u2022 Total = 5 units \u2192 $4150 + $16600 = $20750<br><br>Together they have $20750.<br>Check: $4150 + $16600 = $20750. \u2713","24922":"Jono = 1 unit, Mark = 3 units. Together that is 4 units = $1300. Mark has 2 units more than Jono.<br><br>[[model:questions\/solutions\/q3195.png]]<br><br>\u2022 4 units \u2192 $1300<br>\u2022 1 unit \u2192 $1300 \u00f7 4 = $325 (Jono)<br>\u2022 Mark \u2212 Jono = 2 units \u2192 2 \u00d7 $325 = $650<br><br>Jono had $325; Mark had $650 more than Jono.<br>Check: $325 + $975 (Mark) = $1300; $975 \u2212 $325 = $650. \u2713","24923":"Alison = 1 unit ($89), Mary = 4 units, Susan = 5 units. Altogether that is 1 + 4 + 5 = 10 units.<br><br>[[model:questions\/solutions\/q3196.png]]<br><br>\u2022 Total = 10 units \u2192 10 \u00d7 $89 = $890<br><br>Altogether the three girls have $890.<br>Check: $89 + $356 + $445 = $890. \u2713","24928":"His money is 4 equal units. Three of them ($12) were spent on the book.<br><br>[[model:questions\/solutions\/q3406.png]]<br><br>\u2022 3 units \u2192 $12<br>\u2022 1 unit \u2192 $12 \u00f7 3 = $4<br>\u2022 At first = 4 units \u2192 4 \u00d7 $4 = $16<br><br>He had $16 at first.<br>Check: $$\\frac{3}{4}$$ of $16 = $12. \u2713","24936":"The total $100 + $250 = $350 never changes. In the end Fiona has $30 more than Sebastian, so removing the $30 leaves two equal parts.<br><br>[[model:questions\/solutions\/q3239.png]]<br><br>\u2022 Total \u2192 $100 + $250 = $350<br>\u2022 2 equal parts \u2192 $350 \u2212 $30 = $320<br>\u2022 1 part (Sebastian) \u2192 $320 \u00f7 2 = $160<br>\u2022 Fiona \u2192 $160 + $30 = $190<br><br>Fiona has $190 left.<br>Check: Sebastian $160 + Fiona $190 = $350; $190 \u2212 $160 = $30. \u2713","24937":"The total $4200 + $600 = $4800 stays the same. At the end Terry has $100 more than Tom, so removing $100 splits the rest into two equal parts.<br><br>[[model:questions\/solutions\/q3242.png]]<br><br>\u2022 Total \u2192 $4200 + $600 = $4800<br>\u2022 2 equal parts \u2192 $4800 \u2212 $100 = $4700<br>\u2022 1 part (Tom) \u2192 $4700 \u00f7 2 = $2350<br>\u2022 Terry ends with \u2192 $2350 + $100 = $2450<br>\u2022 Terry gave \u2192 $4200 \u2212 $2450 = $1750<br><br>He gave Tom $1750.<br>Check: Tom $600 + $1750 = $2350; Terry $4200 \u2212 $1750 = $2450 = $2350 + $100. \u2713","24938":"The money received is the whole bar: the takings from the 45 melons plus the takings from the remaining 55 melons.<br><br>[[model:questions\/solutions\/q4133.png]]<br><br>\u2022 45 melons \u2192 45 \u00d7 $6 = $270<br>\u2022 Rest \u2192 100 \u2212 45 = 55 melons<br>\u2022 55 melons \u2192 55 \u00d7 $5 = $275<br>\u2022 Total \u2192 $270 + $275 = $545<br><br>Tom received $545 from selling all the melons.<br>Check: $270 + $275 = $545, from 45 + 55 = 100 melons. \u2713","24943":"They started equal. Martha spent $21 more than Mary ($36 vs $15), so after spending Mary has $21 more than Martha. Mary now = 2 units, Martha now = 1 unit, so that extra unit is the $21.<br><br>[[model:questions\/solutions\/q4154.png]]<br><br>\u2022 Extra spent by Martha \u2192 $36 \u2212 $15 = $21<br>\u2022 Mary \u2212 Martha now = 1 unit \u2192 $21 (so Martha now = $21, Mary now = $42)<br>\u2022 Mary at first \u2192 $42 + $15 = $57<br>\u2022 Both started equal \u2192 total = 2 \u00d7 $57 = $114<br><br>They had $114 altogether at first.<br>Check: each $57; Mary $57\u2212$15=$42, Martha $57\u2212$36=$21, and $42 = 2 \u00d7 $21. \u2713<br><br>Alternative method (algebra):<br>\u2022 Let each start with $m. Mary: m \u2212 15; Martha: m \u2212 36.<br>\u2022 m \u2212 15 = 2(m \u2212 36)  \u21d2  m \u2212 15 = 2m \u2212 72  \u21d2  m = 57.<br>\u2022 Altogether at first = 2 \u00d7 57 = $114.","24944":"They started equal. Ham gained $1600 and Jam lost $750, so Ham is now $1600 + $750 = $2350 ahead. Ham now = 2 units, Jam now = 1 unit, so that 1-unit gap is $2350.<br><br>[[model:questions\/solutions\/q4158.png]]<br><br>\u2022 Ham ahead now \u2192 $1600 + $750 = $2350<br>\u2022 Ham \u2212 Jam = 1 unit \u2192 $2350, so Jam now = $2350<br>\u2022 Each at first \u2192 $2350 + $750 = $3100<br><br>Each of them had $3100 at first.<br>Check: Ham $3100+$1600=$4700, Jam $3100\u2212$750=$2350, and $4700 = 2 \u00d7 $2350. \u2713","24946":"They started equal. Jerry spent 1 unit, Ben spent 2 units (twice as much). Since both began with the same amount, the difference in what is LEFT equals the difference in what was SPENT = 1 unit.<br><br>[[model:questions\/solutions\/q4185.png]]<br><br>\u2022 Difference left \u2192 $18 \u2212 $5 = $13<br>\u2022 This equals the extra unit Ben spent \u2192 1 unit = $13 (Jerry spent $13, Ben spent $26)<br>\u2022 Each at first \u2192 Jerry spent + Jerry left = $13 + $18 = $31<br><br>Each of them had $31 at first.<br>Check: Ben $31\u2212$26=$5, Jerry $31\u2212$13=$18, and $26 = 2 \u00d7 $13. \u2713","24947":"They started equal. Mr spent 1 unit, Mrs spent 6 units. The amounts left differ by the extra 5 units Mrs spent.<br><br>[[model:questions\/solutions\/q4187.png]]<br><br>\u2022 Difference left \u2192 $33000 \u2212 $8000 = $25000<br>\u2022 Extra Mrs spent \u2192 6 units \u2212 1 unit = 5 units \u2192 $25000<br>\u2022 1 unit \u2192 $25000 \u00f7 5 = $5000 (Mr spent)<br>\u2022 Each at first \u2192 Mr spent + Mr left = $5000 + $33000 = $38000<br><br>Each of them had $38000 at first.<br>Check: Mrs spent 6 \u00d7 $5000 = $30000; $38000 \u2212 $30000 = $8000. \u2713","24949":"At first Money leads Anita by $520. Money gives Anita some money: every $1 he gives drops his lead by $2 (he loses $1, she gains $1). The lead falls from $520 to $100.<br><br>[[model:questions\/solutions\/q4153.png]]<br><br>\u2022 Lead must fall \u2192 $520 \u2212 $100 = $420<br>\u2022 Each $1 given closes the gap by $2 \u2192 gift = $420 \u00f7 2 = $210<br><br>Money gave Anita $210.<br>Check: Money $1200\u2212$210=$990, Anita $680+$210=$890, lead $990\u2212$890=$100. \u2713","24950":"Tony\u2019s money never changes. Make the two ratios share Tony: 6:7 and (after) 1:2 = 7:14. Splitting each old unit into 2 small units, Tony = 14 small units, Shaw was 12 and becomes 7. The $500 spent is the 5-small-unit drop.<br><br>[[model:questions\/solutions\/q4525.png]]<br><br>\u2022 Match Tony in both ratios \u2192 6:7 and 1:2 = 7:14 (small units: Shaw 12 \u2192 7, Tony 14)<br>\u2022 Shaw\u2019s drop \u2192 12 \u2212 7 = 5 small units \u2192 $500<br>\u2022 1 small unit \u2192 $500 \u00f7 5 = $100<br>\u2022 Shaw at first \u2192 12 small units = 12 \u00d7 $100 = $1200<br><br>Shaw had $1200 at first.<br>Check: Tony = 14 \u00d7 $100 = $1400; after, Shaw $1200\u2212$500=$700, and $700 : $1400 = 1 : 2. \u2713","24952":"Three times the teacher\u2019s pay equals seven times the driver\u2019s, so Teacher : Driver = 7 : 3. The 4-unit gap is the $2100 the teacher earns more.<br><br>[[model:questions\/solutions\/q4199.png]]<br><br>\u2022 3 \u00d7 Teacher = 7 \u00d7 Driver \u21d2 Teacher : Driver = 7 : 3<br>\u2022 Difference \u2192 7 units \u2212 3 units = 4 units \u2192 $2100<br>\u2022 1 unit \u2192 $2100 \u00f7 4 = $525<br>\u2022 Driver \u2192 3 units = 3 \u00d7 $525 = $1575<br><br>The bus driver\u2019s monthly salary is $1575.<br>Check: Teacher 7 \u00d7 $525 = $3675; 3 \u00d7 $3675 = $11025 = 7 \u00d7 $1575. \u2713","24956":"Cosmetics take 1\/7 = 1 unit. The remainder is 6 units; clothes are 5\/6 of it = 5 units, leaving 1 unit. Clothes (5 units) exceed cosmetics (1 unit) by 4 units = $420.<br><br>[[model:questions\/solutions\/q4358.png]]<br><br>\u2022 Clothes \u2212 cosmetics \u2192 5 units \u2212 1 unit = 4 units \u2192 $420<br>\u2022 1 unit \u2192 $420 \u00f7 4 = $105<br>\u2022 Money left \u2192 1 unit = $105<br><br>Ms Pretty had $105 left.<br>Check: total 7 \u00d7 $105 = $735; cosmetics $105, clothes $525, left $105; $525 \u2212 $105 = $420. \u2713","24960":"The shares are 6, 5 and 4 units, so $120 is split into 6 + 5 + 4 = 15 units.<br><br>[[model:questions\/solutions\/q4486.png]]<br><br>\u2022 Total \u2192 6 + 5 + 4 = 15 units \u2192 $120<br>\u2022 1 unit \u2192 $120 \u00f7 15 = $8<br>\u2022 Lily \u2192 4 units = 4 \u00d7 $8 = $32<br><br>Lily\u2019s share was $32.<br>Check: Jane $48 + Wendy $40 + Lily $32 = $120. \u2713","24965":"Split the $600 into 10 equal parts (each = 10%). Savings are 20% = 2 parts.<br><br>[[model:questions\/solutions\/q4769.png]]<br><br>\u2022 100% \u2192 $600, so 10% \u2192 $600 \u00f7 10 = $60<br>\u2022 Saves 20% \u2192 2 \u00d7 $60 = $120<br><br>Wendy saves $120.<br>Check: 20% of $600 = 0.2 \u00d7 600 = $120. \u2713","24966":"The whole $200 is 100%. Clothes take 24% of it.<br><br>[[model:questions\/solutions\/q4778.png]]<br><br>\u2022 1% \u2192 $200 \u00f7 100 = $2<br>\u2022 Clothes \u2192 24% = 24 \u00d7 $2 = $48<br><br>Alicia spent $48 on clothes.<br>Check: 24% of $200 = 0.24 \u00d7 200 = $48. \u2713","24967":"Food and clothes together take 15% + 24% = 39%. What is saved is the rest of the 100%.<br><br>[[model:questions\/solutions\/q4780.png]]<br><br>\u2022 Spent \u2192 15% + 24% = 39%<br>\u2022 Saved \u2192 100% \u2212 39% = 61%<br>\u2022 1% \u2192 $200 \u00f7 100 = $2<br>\u2022 Saved \u2192 61% = 61 \u00d7 $2 = $122<br><br>Alicia saved $122.<br>Check: food $30 + clothes $48 + saved $122 = $200. \u2713","24969":"Pool all three amounts into one bar, then split it into 3 equal shares. Each equal share is the average.<br><br>[[model:questions\/solutions\/q4653.png]]<br><br>\u2022 Total \u2192 $8 + $13 + $9 = $30<br>\u2022 Each share \u2192 $30 \u00f7 3 = $10<br><br>Each will have $10.<br>Check: 3 \u00d7 $10 = $30 = $8 + $13 + $9. \u2713","24974":"Average of two means the total is twice the average. With ratio 1 : 3, Alfred = 1 unit and Martin = 3 units, so 4 units in all.<br><br>[[model:questions\/solutions\/q4674.png]]<br><br>\u2022 Total \u2192 2 \u00d7 $34 = $68<br>\u2022 4 units \u2192 $68<br>\u2022 1 unit (Alfred) \u2192 $68 \u00f7 4 = $17<br>\u2022 Martin \u2192 3 \u00d7 $17 = $51<br><br>Alfred had $17 and Martin has $51.<br>Check: ($17 + $51) \u00f7 2 = $34 and 17 : 51 = 1 : 3. \u2713","24976":"The three items together cost 3 \u00d7 the average. Take out the skirt and blouse to leave the dress.<br><br>[[model:questions\/solutions\/q4679.png]]<br><br>\u2022 Total of 3 items \u2192 3 \u00d7 $28 = $84<br>\u2022 Skirt + blouse \u2192 $19 + $14 = $33<br>\u2022 Dress \u2192 $84 \u2212 $33 = $51<br><br>The dress cost $51.<br>Check: ($19 + $14 + $51) \u00f7 3 = $84 \u00f7 3 = $28. \u2713","24980":"Cut the salary into 6 equal units (sixths). Wife takes $$\\frac{2}{3}$$ = 4 units, parents take $$\\frac{1}{6}$$ = 1 unit, leaving 1 unit.<br><br>[[model:questions\/solutions\/q5262.png]]<br><br>\u2022 6 units \u2192 $1950<br>\u2022 1 unit \u2192 $1950 \u00f7 6 = $325<br>\u2022 Left \u2192 1 unit = $325<br><br>He has $325 left.<br>Check: wife $1300 + parents $325 + left $325 = $1950. \u2713","24983":"The whole is 100%. She spent 60%, so the $20 left is the other 40%.<br><br>[[model:questions\/solutions\/q5445.png]]<br><br>\u2022 Left \u2192 100% \u2212 60% = 40% \u2192 $20<br>\u2022 10% \u2192 $20 \u00f7 4 = $5<br>\u2022 100% \u2192 10 \u00d7 $5 = $50<br><br>She had $50 at first.<br>Check: 60% of $50 = $30 spent, $50 \u2212 $30 = $20 left. \u2713","24984":"Alan\u2019s pocket money is 100%. Alex gets 30% more, so Alex = 130% = $26.<br><br>[[model:questions\/solutions\/q5453.png]]<br><br>\u2022 Alex \u2192 130% \u2192 $26<br>\u2022 10% \u2192 $26 \u00f7 13 = $2<br>\u2022 Alan \u2192 100% = 10 \u00d7 $2 = $20<br><br>Alan gets $20.<br>Check: 30% of $20 = $6; $20 + $6 = $26. \u2713","24990":"The shares are 9 : 8 : 1, so 18 units in all. The largest share (9 units) is $216.<br><br>[[model:questions\/solutions\/q5390.png]]<br><br>\u2022 Largest \u2192 9 units \u2192 $216<br>\u2022 1 unit \u2192 $216 \u00f7 9 = $24<br>\u2022 Total \u2192 18 units = 18 \u00d7 $24 = $432<br><br>The money being shared was $432.<br>Check: $216 + $192 + $24 = $432; shares 9 : 8 : 1. \u2713","24991":"Anita = 1 unit, Hazel = 3 units. After Anita adds $55 and Hazel adds $17 the two bars are equal in length.<br><br>[[model:questions\/solutions\/q5409.png]]<br><br>\u2022 1 unit + $55 = 3 units + $17 (equal ends)<br>\u2022 $55 \u2212 $17 \u2192 2 units<br>\u2022 2 units \u2192 $38<br>\u2022 1 unit \u2192 $38 \u00f7 2 = $19 (Anita at first)<br>\u2022 Hazel at first \u2192 3 units = 3 \u00d7 $19 = $57<br><br>Hazel saved $57 at first (Anita saved $19).<br>Check: $19 + $55 = $74 and $57 + $17 = $74 \u2014 equal. \u2713","24992":"The bag is one unit (the wallet) plus an extra $7. The two together make $180.<br><br>[[model:questions\/solutions\/q2425.png]]<br><br>\u2022 2 units + $7 \u2192 $180<br>\u2022 2 units \u2192 $180 \u2212 $7 = $173<br>\u2022 1 unit (wallet) \u2192 $173 \u00f7 2 = $86.50<br><br>The wallet cost $86.50.<br>Check: $86.50 + $93.50 = $180, and $93.50 \u2212 $86.50 = $7. \u2713","24996":"Her pocket money is 6 equal units (sixths). She spent 5 units on lunch, so the 1 unit left is the $3.<br><br>[[model:questions\/solutions\/q3407.png]]<br><br>\u2022 1 unit (left) \u2192 $3<br>\u2022 At first \u2192 6 units = 6 \u00d7 $3 = $18<br><br>She had $18 pocket money.<br>Check: lunch $15 (5 units) + $3 left = $18. \u2713","24999":"The train costs $$\\frac{3}{4}$$ of the car: car = 4 units, train = 3 units. The 3 units are $42.<br><br>[[model:questions\/solutions\/q3431.png]]<br><br>\u2022 3 units \u2192 $42<br>\u2022 1 unit \u2192 $42 \u00f7 3 = $14<br>\u2022 Car \u2192 4 units = 4 \u00d7 $14 = $56<br><br>The toy car cost $56.<br>Check: train \u2192 $$\\frac{3}{4}$$ of $56 = $42. \u2713","25002":"Together they have $1400 in the ratio 7 : 3, so 10 units = $1400. To be equal each should hold 5 units; Mr A gives the 2 units above 5.<br><br>[[model:questions\/solutions\/q4511.png]]<br><br>\u2022 10 units \u2192 $1400<br>\u2022 1 unit \u2192 $1400 \u00f7 10 = $140<br>\u2022 Mr A gives \u2192 7 units \u2212 5 units = 2 units = 2 \u00d7 $140 = $280<br><br>Mr A must give Mrs A $280.<br>Check: Mr A $980 \u2212 $280 = $700; Mrs A $420 + $280 = $700. \u2713","25003":"Jerry used $$\\frac{3}{4}$$ so his money is 4 equal units (1 unit left). Tom used $$\\frac{5}{6}$$ so his is 6 equal units (1 unit left). The two leftover units are equal, so all units are the same size.<br><br>[[model:questions\/solutions\/q5289.png]]<br><br>\u2022 Jerry + Tom = 4 + 6 = 10 units \u2192 $100<br>\u2022 1 unit \u2192 $100 \u00f7 10 = $10<br>\u2022 Each left \u2192 1 unit = $10<br><br>Each of them had $10 left.<br>Check: Jerry $40 (used $30, left $10); Tom $60 (used $50, left $10); $40 + $60 = $100. \u2713","25005":"The total money never changes, so split it into 20 equal units. Sam is $$\\frac{1}{4}$$ = 4 units before (1 : 4) and $$\\frac{9}{11}$$ = 9 units after (9 : 11). The $60 he received is the extra 5 units.<br><br>[[model:questions\/solutions\/q5292.png]]<br><br>\u2022 Sam\u2019s gain \u2192 9 units \u2212 4 units = 5 units = $60<br>\u2022 1 unit \u2192 $60 \u00f7 5 = $12<br>\u2022 Sam in the end \u2192 9 units = 9 \u00d7 $12 = $108<br><br>Sam has $108 in the end.<br>Check: total 20 units = $240; after Sam $108, Patrick $132 = 9 : 11. \u2713","25006":"The $80 is the whole. She spent $27, so what she saved is the rest of the bar.<br><br>[[model:questions\/solutions\/q2346.png]]<br><br>\u2022 Saved \u2192 $80 \u2212 $27 = $53<br><br>She saved $53.<br>Check: $27 + $53 = $80. \u2713","25007":"Lynn saved the same as Freda ($29) plus $19 more, so her bar is Freda\u2019s plus an extra $19.<br><br>[[model:questions\/solutions\/q2348.png]]<br><br>\u2022 Lynn \u2192 $29 + $19 = $48<br><br>Lynn saved $48.<br>Check: $48 \u2212 $29 = $19 more than Freda. \u2713","25010":"What he had at first is the whole bar: what he spent plus what was left.<br><br>[[model:questions\/solutions\/q2353.png]]<br><br>\u2022 At first \u2192 $17 + $28 = $45<br><br>He had $45 at first.<br>Check: $45 \u2212 $17 = $28 left. \u2713","25011":"Heidi = 1 unit, Kelly = 2 units (twice Heidi), Pat = 2 units + $350. The three together are $1125.<br><br>[[model:questions\/solutions\/q3222.png]]<br><br>\u2022 1 + 2 + 2 = 5 units, plus $350 \u2192 $1125<br>\u2022 5 units \u2192 $1125 \u2212 $350 = $775<br>\u2022 1 unit \u2192 $775 \u00f7 5 = $155<br>\u2022 Kelly = 2 units \u2192 2 \u00d7 $155 = $310<br><br>Kelly has $310.<br>Check: Heidi $155 + Kelly $310 + Pat $660 = $1125. \u2713","25013":"Let a car = 1 unit. Each truck is 1 unit + $5, so 5 trucks = 5 units + 5 \u00d7 $5. With 3 cars that is 8 units + $25 = $233.<br><br>[[model:questions\/solutions\/q3244.png]]<br><br>\u2022 3 cars + 5 trucks = 3 + 5 = 8 units, plus 5 \u00d7 $5 = $25 \u2192 $233<br>\u2022 8 units \u2192 $233 \u2212 $25 = $208<br>\u2022 1 unit (car) \u2192 $208 \u00f7 8 = $26<br><br>A toy car costs $26.<br>Check: 3($26) + 5($31) = $78 + $155 = $233. \u2713","25014":"Let a table = 1 unit. Each chair is 1 unit \u2212 $15, so 9 chairs = 9 units \u2212 9 \u00d7 $15. With 3 tables that is 12 units \u2212 $135 = $360.<br><br>[[model:questions\/solutions\/q4150.png]]<br><br>\u2022 3 tables + 9 chairs = 12 units, \u2212 9 \u00d7 $15 = $135 \u2192 $360<br>\u2022 12 units \u2192 $360 + $135 = $495<br>\u2022 1 unit (table) \u2192 $495 \u00f7 12 = $41.25<br>\u2022 1 chair \u2192 $41.25 \u2212 $15 = $26.25<br>\u2022 2 chairs \u2192 2 \u00d7 $26.25 = $52.50<br><br>The cost of the two chairs is $52.50.<br>Check: 3($41.25) + 9($26.25) = $123.75 + $236.25 = $360. \u2713"},"questions":{"663":"Laura buys a toy car and a carton of milk for 95\u00a2. She gives the cashier \\(\\$1.\\) <hr> She will get back <input min=\"0\" type=\"number\" id =\"imp1pg227q2b_1\" class=\"lineinput\" placeholder=\"?\" \/> \u00a2.","665":"Kelly buys 2 candies for 70\u00a2. She pays to cashier \\(\\$1.\\) <hr> She will get back <input min=\"0\" type=\"number\" id =\"imp1pg228q3b_1\" class=\"lineinput\" placeholder=\"?\" \/> \u00a2 change.","669":"Toby gives the cashier 1 ten-dollar note for a burger and a packet of milk which cost \\(\\$8.\\) <hr> He will get back $ <input min=\"0\" type=\"number\" id =\"imp1pg229q6b_1\" class=\"lineinput\" placeholder=\"?\" \/>.","696":"Tom has \\(\\$8.\\) <br> He would like to buy a pair of socks. <hr> He needs $ <input min=\"0\" type=\"number\" id =\"imp1pg238q10_1\" class=\"lineinput\" placeholder=\"?\" \/> more.","1189":"John had \\(\\$980.\\) <br> He bought a computer that cost \\(\\$814.\\) <hr> He had $ <input min=\"0\" type=\"number\" id =\"imp2pg031q3_1\" class=\"lineinput\" placeholder=\"X\" \/> left.","1201":"Mick spent \\(\\$6\\) on lunch. <br>He then spent \\(\\$5\\) on snacks. <br>Lastly, he bought a book for \\(\\$12.\\)<hr>Mick spent $ _____ in all.","1208":"Lawrence has \\(\\$189.\\) <br> His brother has \\(\\$23\\) more than he does. <hr> His brother has $ <input min=\"0\" type=\"number\" id =\"imp2pg043q5_1\" class=\"lineinput\" placeholder=\"?\" \/>. <br>They have $ <input min=\"0\" type=\"number\" id =\"imp2pg043q5_2\" class=\"lineinput\" placeholder=\"?\" \/> altogether.","1401":"Roy saves \\(\\$3\\) each day. <hr>In <input min=\"0\" type=\"number\" id =\"imp2pg086q4_1\" class=\"lineinput\" placeholder=\"?\" \/> days, he will save \\(\\$18.\\)","1403":"The cost of 4 pens is \\(\\$8.\\) <hr>Each pen costs $ <input min=\"0\" type=\"number\" id =\"imp2pg087q6_1\" class=\"lineinput\" placeholder=\"?\" \/>.","1404":"Sally spent \\(\\$24\\) to buy pens. <br> Each pen cost \\(\\$4.\\)<hr>In total, she bought <input min=\"0\" type=\"number\" id =\"imp2pg087q7_1\" class=\"lineinput\" placeholder=\"?\" \/> pens.","1406":"A cake costs \\(\\$2.\\) <br> How much do 3 cakes cost?<hr>Which model correctly represent the situation?","1407":"2 pens cost \\(\\$8.\\) <br>Which model correctly represent the situation and ask the cost of each pen?","1427":"2 buns cost \\(\\$4.\\) <hr>1 bun costs $<input min=\"0\" type=\"number\" id =\"imp2pg097q2_1\" class=\"lineinput\" placeholder=\"?\" \/>.","1431":"1 Taiwanese mango costs \\(\\$4.\\) <hr>7 Taiwanese mangoes cost $<input min=\"0\" type=\"number\" id =\"imp2pg098q6_1\" class=\"lineinput\" placeholder=\"?\" \/>.","1432":"15 toy cars cost \\(\\$90.\\) <hr>1 toy car costs $<input min=\"0\" type=\"number\" id =\"imp2pg098q7_1\" class=\"lineinput\" placeholder=\"?\" \/>.","1434":"1 cake costs \\(\\$5.\\) <br> 3 cakes cost $ <input min=\"0\" type=\"number\" id =\"imp2pg099q8_1\" class=\"lineinput\" placeholder=\"?\" \/>.","1435":"Susan wants to buy a bracelet each for her 2 daughters. Each costs \\(\\$15.\\)<hr>2 bracelets will cost her $ <input min=\"0\" type=\"number\" id =\"imp2pg099q9_1\" class=\"lineinput\" placeholder=\"?\" \/>.","1562":"Nancy has \\(\\$10.\\) <br>Michelle has \\(\\$35\\) more than Nancy. <hr>Michelle has $ <input min=\"0\" type=\"number\" id=\"imp2pg170q1_1\" class=\"lineinput\" placeholder=\"?\">.","1565":"Kimberly has \\(\\$11.\\) <br>She spends \\(\\$4\\) on a plate of pasta.<hr>She has $ <input min=\"0\" type=\"number\" id =\"imp2pg171q4_1\" class=\"lineinput\" placeholder=\"?\" \/> left.","1569":"Lilly gives \\(\\$9\\) to her children. <br>Each child gets \\(\\$3.\\) <hr>Lilly has <input min=\"0\" type=\"number\" id =\"imp2pg172q8_1\" class=\"lineinput\" placeholder=\"?\" \/> children.","1576":"James had \\(\\$10.\\) <br>He bought a photo-frame for \\(\\$5.45.\\)<hr>He has _____ left.","1580":"Janson had \\(\\$12.\\) <br>His father gave him another 150 dollars as allowance. Then he spent 24 dollars on a toy. <hr>He had $ <input min=\"0\" type=\"number\" id=\"imp2pg175q1_1\" class=\"lineinput\" placeholder=\"?\"> left.","1581":"Jess had \\(\\$100.\\) <br>She spent 7 dollars on food and 50 dollars on a bag. <hr>She had $ <input min=\"0\" type=\"number\" id=\"imp2pg175q2_1\" class=\"lineinput\" placeholder=\"?\"> left.","1582":"Posh had \\(\\$25.\\) <br>She then gave some money to her sister and bought some stationery for \\(\\$5.\\)<br>She had \\(\\$9\\) left. <hr>She gave $ <input min=\"0\" type=\"number\" id =\"imp2pg176q3_1\" class=\"lineinput\" placeholder=\"?\" \/> to her sister.","1583":"Cliff had \\(\\$150.\\) <br>He used some money to buy a bag. <br>Then he gave \\(\\$30\\) to a charity. <br> He had \\(\\$45\\) left. <hr>The bag costs $ <input min=\"0\" type=\"number\" id =\"imp2pg176q4_1\" class=\"lineinput\" placeholder=\"?\" \/>.","1584":"Jon had \\(\\$14.\\) <br> Jamie had \\(\\$7\\) more than Jon. <hr> Jamie had $ <input min=\"0\" type=\"number\" id =\"imp2pg176q5_1\" class=\"lineinput\" placeholder=\"?\" \/>.<br>They had $ <input min=\"0\" type=\"number\" id =\"imp2pg176q5_2\" class=\"lineinput\" placeholder=\"?\" \/> altogether.","1585":"Shaun has \\(\\$88.\\) <br>He has \\(\\$9\\) more than Ray.<hr> Ray has $ <input min=\"0\" type=\"number\" id =\"imp2pg177q6_1\" class=\"lineinput\" placeholder=\"?\" \/>. <br>They have $ <input min=\"0\" type=\"number\" id =\"imp2pg177q6_2\" class=\"lineinput\" placeholder=\"?\" \/> altogether.","1586":"Teresa has \\(\\$85.\\) <br>She has \\(\\$15\\) less than her sister. <hr>Her sister has $ <input min=\"0\" type=\"number\" id =\"imp2pg177q7_1\" class=\"lineinput\" placeholder=\"?\" \/>. <br> They have $ <input min=\"0\" type=\"number\" id =\"imp2pg177q7_2\" class=\"lineinput\" placeholder=\"?\" \/> altogether.","1587":"Rose has \\(\\$380.\\) <br>Kelly has \\(\\$60\\) less than Rose. <hr>Kelly has $ <input min=\"0\" type=\"number\" id =\"imp2pg177q8_1\" class=\"lineinput\" placeholder=\"?\" \/>. <br>They have $ <input min=\"0\" type=\"number\" id =\"imp2pg177q8_2\" class=\"lineinput\" placeholder=\"?\" \/> altogether.","1588":"Ken had \\(\\$170.\\) <br>He had \\(\\$10\\) more than Amos. <br> Amos used \\(\\$32\\) to buy a pair of running shorts. <hr>Amos had $ <input min=\"0\" type=\"number\" id =\"imp2pg178q1_1\" class=\"lineinput\" placeholder=\"?\" \/>left.","1589":"Wayne has \\(\\$855.\\) <br>He has \\(\\$210\\) more than his brother. <br>His father then gives his brother another \\(\\$50.\\) <hr>His brother has $ <input min=\"0\" type=\"number\" id =\"imp2pg178q2_1\" class=\"lineinput\" placeholder=\"?\" \/> now.","1590":"Larson had \\(\\$35.\\) <br> Ricky had \\(\\$8\\) less than Larson. <br>Buck had \\(\\$44.\\) <hr> The three of them have $ <input min=\"0\" type=\"number\" id =\"imp2pg179q3_2\" class=\"lineinput\" placeholder=\"?\" \/> altogether.","1591":"Ricky has \\(\\$32.\\) <br> He has \\(\\$15\\) less than John. <br> Lionel has \\(\\$81.\\) <br>Lionel has $ <input min=\"0\" type=\"number\" id =\"imp2pg179q4_1\" class=\"lineinput\" placeholder=\"?\" \/> more than Ricky. <br> John has $ <input min=\"0\" type=\"number\" id =\"imp2pg179q4_2\" class=\"lineinput\" placeholder=\"?\" \/>. <br> John has $ <input min=\"0\" type=\"number\" id =\"imp2pg179q4_3\" class=\"lineinput\" placeholder=\"?\" \/> less than Lionel.","2085":"John has \\(\\$45.\\)<br>Ken has \\(\\$20\\) less than John.<br>Ken has \\(\\$15\\) more than Leo.<br>How much money does Leo have?","2090":"Jo bought a bag and a dress for \\(\\$180.\\)<br>The dress was \\(\\$72.\\) <br> The bag cost $<input min=\"0\" type=\"number\" id=\"imp3pg045q4_1\" class=\"lineinput\" placeholder=\"?\"> more than the dress.","2091":"The total cost of an oven and a dryer is \\(\\$1460.\\) <br>The oven costs \\(\\$570.\\) <br> The difference between the cost of the oven and the dryer is $ <input min=\"0\" type=\"number\" id=\"imp3pg046q5_1\" class=\"lineinput\" placeholder=\"?\">.","2092":"Sherman bought a train set for \\(\\$350.\\)<br> He bought another toy car that cost \\(\\$90\\) less than the train set.<br> He spent a total of <input min=\"0\" type=\"number\" id=\"imp3pg046q6_1\" class=\"lineinput\" placeholder=\"?\"> on the 2 items.","2250":"Pete saves \\(\\$3\\) a week. <hr> It takes <input min=\"0\" type=\"number\" id=\"imp3pg067q2_1\" class=\"lineinput\" placeholder=\"?\"> weeks for Pete to save \\(\\$27.\\)","2258":"Pele saved \\(\\$20.\\) He saved twice as much money as Kane. <br> Kane saved $ <input min=\"0\" type=\"number\" id=\"imp3pg070q10_1\" class=\"lineinput\" placeholder=\"?\">.","2259":"Mel saved \\(\\$28,\\) 4 times as much as Zack,<br>Hopw much did Zack save and how much did both save in total ?\n<br>Zack saved : <input type=\"text\" class=\"fill-blank-input\">","2260":"Mel saved \\(\\$28,\\) 4 times as much as Zack.<br> How much did Mel and Zack saved together?<br> Answer : <input type=\"text\" class=\"fill-blank-input\"> dollars","2267":"Father gave some money to John and Cheryl. Cheryl received \\(\\$72.\\) She received 3 times as much as John. How much did father give out in total ? Use the above uncompleted model to help. <br>Answer : <input type=\"text\" class=\"fill-blank-input\">","2365":"1 $$ kg$$ of cherries is sold for \\(\\$9.\\) <hr>20 $$ kg$$ of cherries cost $ <input min=\"0\" type=\"number\" id =\"imp3pg097q9_1\" class=\"lineinput\" placeholder=\"?\" \/>.","2394":"Michael bought a ball for \\(\\$12.75.\\) He gave the cashier 2 ten-dollar notes. How much change did he receive? <br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","2396":"The usual price of a watch was \\(\\$90.\\) At a sale, the price was reduced to 63.70 dollars. How much cheaper was the price at the sale?<br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","2401":"A pair of shoes costs \\(\\$24.65.\\) <br>A basketball costs \\(\\$1.75\\) more than the pair of shoes. <br>What is the cost of the basketball?","2404":"Stevie wants to buy a camera which costs 500 dollars but is short of \\(\\$145.\\) <br>How much money does Stevie have?","2407":"A shopkeeper has some two-dollar notes. <br>The value of all the two-dollar notes is \\(\\$100.\\) <br>How many two-dollar notes does he have?","2408":"A stapler costs \\(\\$3.60.\\) <br>A ruler costs \\(\\$1.70\\) less than the stapler. <br>Total cost of a ruler and a stapler is $ <input min=\"0\" type=\"number\" id=\"imp3pg106q1_1\" class=\"lineinput\" placeholder=\"?\" step=\"0.01\">","2409":"Miranda spent \\(\\$20\\) on a pair of jeans and a skirt. <br>The skirt cost \\(\\$9.45.\\) <br>The jeans cost $ <input min=\"0\" type=\"number\" id=\"imp3pg106q2_1\" class=\"lineinput\" placeholder=\"?\" step=\"0.01\"> more than the skirt.","2410":"A packet of peanuts costs \\(\\$2.35.\\) <br>A packet of peanuts costs \\(\\$1.95\\) less than a packet of cashew nuts. <br>Total cost of a packet of peanuts and a packet of cashew nuts is $ <input min=\"0\" type=\"number\" id=\"imp3pg107q3_1\" class=\"lineinput\" placeholder=\"?\" step=\"0.01\">","2411":"Tim has \\(\\$56.90.\\) <br>He has \\(\\$7.45\\) more than Kelly. <br>Altogether, Tim and Kelly have $ <input min=\"0\" type=\"number\" id=\"imp3pg107q4_1\" class=\"lineinput\" placeholder=\"?\" step=\"0.01\"> .","2412":"Mr Tan and Mr Soh have \\(\\$90\\) altogether. <br>Mr Soh has \\(\\$15.50.\\) <br>Mr Tan have $ <input min=\"0\" type=\"number\" id=\"imp3pg107q5_1\" class=\"lineinput\" placeholder=\"?\" step=\"0.01\"> more than Mr Soh.","2413":"Charlie had \\(\\$30.\\) <br>He bought a burger for \\(\\$4.50\\) and a milkshake for 2.25 dollars. How much did Charlie have left? <br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","2415":"Lily went to the market with some money. <br>She bought a fish for 5.5 dollars and a chicken for 6.80 dollars. <br>She was left with \\(\\$23.\\) How much did she bring to the market? <br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","2416":"May went to school with some pocket money. During recess, she bought a plate of rice for \\(\\$2.30\\) amd a glass of juice for 1.80 dollars. <br>She was left with \\(\\$7.70.\\) How much did May bring to school?<br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","2417":"A ticket to a show cost \\(\\$8.50.\\) Gerald bought 2 tickets and gave the cashier 2 ten-dollar notes. How much change did he get back?<br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","2418":"A marker costs \\(\\$4.35.\\) <br>A pen costs \\(\\$3\\) more than the marker. <br>The pen costs \\(\\$2.80\\) more than a pencil box. How much does the pencil box cost? <br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","2419":"Jackie has \\(\\$50.20.\\) <br>She has \\(\\$23.80\\) more than Cherry. <br>Cherry has \\(\\$4.10\\) less than Kate. How much does Kate has?<br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","2420":"The total cost of a washing machine, a vacuum cleaner and an oven is \\(\\$945.\\) <br>The oven costs 238.50 and the the washing machine costs 540 dollars. How much is the vacuum cleaner? <br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","2421":"An umbrella costs \\(\\$14.70.\\) <br>The umbrella costs \\(\\$6.10\\) more than a raincoat. <br>A jacket costs \\(\\$8.25\\) more than the raincoat. How much is the jacket?  <br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","2423":"James bought a pencil and a book. He gave the cashier 2 five-dollar notes and received a change of \\(\\$1.40.\\) <br>The pencil cost \\(\\$2.15.\\) How much is the book? <br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","2424":"Linda went to a bookshop and bought a storybook and a packet of erasers. <br>The total cost of the two items was \\(\\$12.\\) <br>The storybook cost \\(\\$2\\) more than the packet of erasers. How much do the erasers cost? <br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","2425":"Mr Tan bought a bag and a wallet. Total cost was \\(\\$180.\\)<br>The bag cost \\(\\$7\\) more than the wallet. How much was the wallet? <br> Answer : $ <input type=\"text\" class=\"fill-blank-input\">","2426":"The total cost of an LCD TV and a DVD player was \\(\\$721.\\) The DVD player cost 265 dollars less than the LCD TV. How much is the LCD TV? <br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","2427":"Mrs Diana bought a lazy chair and a coffee table for \\(\\$845.\\) The coffee table cost 197 dollars less than the chair. How much was the chair?<br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","3188":"A train set costs \\(\\$260.\\)<br>16 train sets will cost $ <input min=\"0\" type=\"number\" id =\"imp4pg029q13_1\" class=\"lineinput\" placeholder=\"?\" \/> (round your answer to the nearest hundred)","3189":"Bill has \\(\\$4150.\\) His older sister has 4 times as much money. What is the total amount they have together?<br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp4pg029q14_1\" class=\"lineinput\" placeholder=\"?\">.","3196":"Alison has \\(\\$89.\\) Mary has 4 times as much money as Alison. Susan has 5 times as much money as Alison.<br>How much do they have altogether?<br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp4pg032q7_1\" class=\"lineinput\" placeholder=\"?\">.","3198":"Jim has twice as much money as Jason. Malcolm has twice as much money as Jim. Jim has \\(\\$820.\\)<br>How much more does Malcolm have than Jason?<br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp4pg033q9_1\" class=\"lineinput\" placeholder=\"?\">.","3200":"At the furniture exhibition, 2 sofa chairs were sold at \\(\\$1316.\\) How much would 10 chairs cost?<br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp4pg034q12_1\" class=\"lineinput\" placeholder=\"?\">.","3201":"A 3-night hotel stay cost John \\(\\$624.\\)<br>How much will John have to pay to extend his stay by another 2 nights?<br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp4pg034q12_1\" class=\"lineinput\" placeholder=\"?\">.","3205":"Mrs. Field bought 35 pears. The pears were sold at 5 for \\(\\$4.\\) How much did she pay for the pears?<br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp4pg035q16_1\" class=\"lineinput\" placeholder=\"?\">.","3218":"Apples are sold at 5 for \\(\\$3.\\) Find the cost of 100 apples.","3231":"Ray has \\(\\$408.\\) He has 4 times as much money as Elliot. <br>For both to same amount of money, how much must Ray give Elliot?<br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp4pg041q10_1\" class=\"lineinput\" placeholder=\"?\">.","3266":"Above chart plotted sales of cakes by Mr. Baker for days of the week. Each cake was sold for \\(\\$19.\\)<br> How much money did Mr Baker receive for the cakes sold on Saturday? <br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp4pg053q9_1\" class=\"lineinput\" placeholder=\"?\">","3323":"The cost of renting a bicycle for <input min=\"0\" type=\"number\" id =\"imp4pg064q7a_1\" class=\"lineinput\" placeholder=\"?\" \/> hours is \\(\\$10.\\)","3324":"The cost of renting a bicycle for <input min=\"0\" type=\"number\" id =\"imp4pg064q7b_1\" class=\"lineinput\" placeholder=\"?\" \/> hours is \\(\\$17.50.\\)","3335":"On Sunday night, Mr Tan earned 20 dollars more than Terry. Their total earnings on Sunday were \\(\\$410.\\) <br>How much did they each make on Sunday?<br>Mr Tan : $ <input min=\"0\" type=\"number\" id=\"imp4pg065q5_2\" class=\"lineinput\" placeholder=\"?\"> <br>Mr Lim : $ <input type=\"text\" class=\"fill-blank-input\">","3431":"A toy train cost $$\\dfrac{3}{4}$$ that of a toy car. The toy train cost \\(\\$42.\\) <hr> The toy car cost $<input min=\"0\" type=\"number\" id =\"imp4pg085q4_1\" class=\"lineinput\" placeholder=\"?\" \/>.","3452":"John has \\(\\$28,\\) $$\\dfrac{1}{13}$$ as much money as Kevin. Tim has twice as much money as Kevin. <br>Altogether, the three boys have $<input min=\"0\" type=\"number\" id =\"imp4pg091q10_1\" class=\"lineinput\" placeholder=\"?\" \/>.","3889":"4 notebooks cost \\(\\$5.40.\\) <br>Each notebook costs $<input min=\"0\" type=\"number\" id=\"imp4pg184q2_1\" class=\"lineinput\" placeholder=\"?\">.","3894":"A talking robot costs \\(\\$46,\\) 8 times as much as a doll. <br>Each doll costs $ <input min=\"0\" type=\"number\" id=\"imp4pg186q7_1\" class=\"lineinput\" placeholder=\"?\">.","3896":"2 identical packs of fruit juice cost \\(\\$7.30.\\) <br>5 packs cost $ <input min=\"0\" type=\"number\" id=\"imp4pg186q9_1\" class=\"lineinput\" placeholder=\"?\">.","3897":"Mandy saved \\(\\$18.75.\\) Holly saved twice as much as Mandy.<br>Together, the girls saved $ <input min=\"0\" type=\"number\" id=\"imp4pg187q10_1\" class=\"lineinput\" placeholder=\"?\">.","3900":"Jack spent \\(\\$17.50,\\) twice what his son spent, in a bookstore. <br>Altogether, they spent $ <input min=\"0\" type=\"number\" id=\"imp4pg188q3_1\" class=\"lineinput\" placeholder=\"?\">.","3904":"Linda has \\(\\$5.20,\\) twice as much money as Sue. Sue has 4 times as much money as Pat. <br>How much does Pat have?<br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp4pg189q7_1\" class=\"lineinput\" placeholder=\"?\">.","3905":"Jill has twenty-two 20\u00a2 and 50\u00a2 coins. The total amount of money that she has is \\(\\$8.30.\\) <br>Number of 20\u00a2 coins is <input min=\"0\" type=\"number\" id =\"imp4pg189q8_1\" class=\"lineinput\" placeholder=\"?\" \/>.","3906":"Stan wants to buy 8 pizzas, each \\(\\$19.45.\\)<br>Stan needs at least <input min=\"0\" type=\"number\" id=\"imp4pg190q9_1\" class=\"lineinput\" placeholder=\"?\"> pieces of \\(\\$10\\) notes.","3907":"Jack has some 10\u00a2 and 5\u00a2 coins. The total amount of money that he has is \\(\\$1.70.\\) He has 8 more 10\u00a2 coins than 5\u00a2 coins. <br>The total number of coins is <input min=\"0\" type=\"number\" id =\"imp4pg190q10_1\" class=\"lineinput\" placeholder=\"?\" \/>.","4139":"Lucky Lam bought 25 cartons of oranges.<br>In each carton, there were 128 oranges.<br>He repacked them into bags of 8 oranges each.<br>He sold each bag for \\(\\$3.\\)<hr>Lucky Lam collected $ <input min=\"0\" type=\"number\" id =\"imp5pg008q10_1\" class=\"lineinput\" placeholder=\"?\" \/> from selling all the oranges.","4142":"A businessman bought 200 pens at the price of 25 pieces for \\(\\$8.\\)<br>He sold all of them at a price of 4 pieces for \\(\\$2.\\)<br>The businessman made $ <input min=\"0\" type=\"number\" id=\"imp5pg009q13_1\" class=\"lineinput\" placeholder=\"?\">in profits.","4149":"The cost of 2 shirts and 6 caps is \\(\\$23.\\)<br>Each shirt costs twice as much as a cap. <br>The toal cost of a shirt and a cap is $ <input min=\"0\" type=\"number\" id=\"imp5pg011q5_1\" class=\"lineinput\" placeholder=\"?\">.","4150":"Mr. Peabody bought 3 tables and 9 chairs.<br>He paid a total of \\(\\$360.\\)<br>A chair cost \\(\\$15\\) less than a table.<br>The cost of the two chairs is $ <input min=\"0\" type=\"number\" id=\"imp5pg011q6_1\" class=\"lineinput\" placeholder=\"?\">.","4153":"At first, Money had \\(\\$1200.\\)<br>He had \\(\\$520\\) more than Anita.<br>Then, he gave some money to Anita.<br>In the end, he had only \\(\\$100\\) more than Anita.<br>How much did Money give to Anita?<br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp5pg012q9_1\" class=\"lineinput\" placeholder=\"?\">","4158":"Ham and Jam each had the same amount of money at first.<br> Then, Ham received his salary of \\(\\$1600.\\) <br> Jam spent \\(\\$750\\) on a computer. <br>Now, Ham has twice as much money as Jam. <hr>Each of them had $ <input min=\"0\" type=\"number\" id=\"imp5pg014q14_1\" class=\"lineinput\" placeholder=\"?\"> at first.","4182":"Alex had \\(\\$6.\\) <br> His brother had \\(\\$15.\\) <br> After their parents gave each of them the same amount of money, Alex's brother had twice as much as Alex. <hr> Their parents gave each of them $ <input min=\"0\" type=\"number\" id=\"imp5pg021q10_1\" class=\"lineinput\" placeholder=\"?\">.","4187":"Mr. Thrifty and Mrs. Thrifty had the same amount of money at first. After Mrs. Thrifty spent six times as much as Mr. Thrifty, she had only \\(\\$8000\\) left. <br> Mr Thrifty had \\(\\$33000.\\)  <hr> Each of them had $ <input min=\"0\" type=\"number\" id=\"imp5pg022q15_1\" class=\"lineinput\" placeholder=\"?\"> at first.","4338":"Liane had some money. She spent $\\frac{1}{9}$ of it to buy food and $\\frac{1}{4}$ of the remainder on a file. The file cost her \\(\\$4.\\) How much (in dollars) did she spend on food?","4340":"Mindy had some money. She spent $\\frac{1}{3}$ of it to buy food and $\\frac{1}{2}$ of the remainder on a file. The file cost her \\(\\$4.\\) How much money did she have at first?\n<br>Answer : <input type=\"text\" class=\"fill-blank-input\">","4362":"$\\frac{1}{9}$ of Glen's money is equal to $\\frac{1}{5}$ of Nick's money. Glen has \\(\\$36.\\) How much money does Nick have?\n<hr> Nick has $ <input min=\"0\" type=\"number\" id=\"imp5pg061q4_1\" class=\"lineinput\" placeholder=\"?\"> .","4372":"Charlie has a pot of money. He gave $\\frac{1}{3}$ of it to his wife. He then gave $\\frac{1}{4}$ of the remainder to his daughter and $\\frac{3}{20}$ of the remainder to his son. The rest of the remainder was given to charity. If his wife got \\(\\$200000,\\) how much was given to charity?\n\n<hr>Answer : $ <input min=\"0\" type=\"number\" id=\"imp5pg064q3b_1\" class=\"lineinput\" placeholder=\"?\">","4523":"The ratio of Han Boon's money to Richard's money is 4 : 1. The ratio of Andy's money to the total of Han Boon's and Richard's money is 1 : 3. <br>Andy has \\(\\$25.\\) <hr>Han Boon has $ <input min=\"0\" type=\"number\" id =\"imp5pg104q5b_1\" class=\"lineinput\" placeholder=\"?\" \/>.","4610":"1 kg of fish cost \\(\\$12.50.\\) <br> \n1 kg of mutton cost \\(\\$8.75.\\) <br> \nRay bought 20 kg of fish and 30 kg of mutton. <br> \nHow much did he pay altogether? <hr> \nHe paid $ <input min=\"0\" type=\"number\" id=\"imp5pg111q2_1\" class=\"lineinput\" placeholder=\"?\">altogether.","4612":"A notebook costs \\(\\$0.65.\\) <hr>3000 notebooks cost $ <input min=\"0\" type=\"number\" id =\"imp5pg112q4_1\" class=\"lineinput\" placeholder=\"?\" \/>.","4634":"Betty has \\(\\$55.80.\\)<br>She has 12 times as much money as Sheila.<hr>The two girls have altogether $ <input min=\"0\" type=\"number\" id =\"imp5pg116q6_1\" class=\"lineinput\" placeholder=\"?\" \/>.","4653":"Cindy has \\(\\$8.\\) <br> Her sister has \\(\\$13.\\) <br> Her brother has \\(\\$9.\\)<hr> If all their money are pooled together and shared equally among the three of them, each will have $ <input min=\"0\" type=\"number\" id=\"imp5pg148q2_1\" class=\"lineinput\" placeholder=\"?\">.","4674":"The ratio of Alfred's savings to Martin's savings is 1 : 3. The average savings of the two boys is \\(\\$34.\\) <hr> Alfred had $ <input min=\"0\" type=\"number\" id =\"imp5pg154q2_1\" class=\"lineinput\" placeholder=\"?\" \/> and Martin has $ <input min=\"0\" type=\"number\" id =\"imp5pg154q2_2\" class=\"lineinput\" placeholder=\"?\" \/>","4679":"Julie bought a skirt, a blouse and a dress. <br> \nThe average cost of the 3 items was \\(\\$28.\\) <br> \nThe skirt cost \\(\\$19.\\) <br> \nThe blouse cost \\(\\$14.\\) <hr>The cost of the dress is $ <input min=\"0\" type=\"number\" id=\"imp5pg156q7_1\" class=\"lineinput\" placeholder=\"?\">.","4686":"The average weekly pocket money of Jamie and Carrie is \\(\\$11.\\) <br> Jamie has \\(\\$4\\) less pocket money than Carrie. <br> How much pocket money does Jamie get each week? <br> Answer : $ <input type=\"text\" class=\"fill-blank-input\">","4693":"The average amount of money of Aaron, Dick, Issac and Julian is \\(\\$5.50.\\) <br> \nIssac and Dick have a total of \\(\\$12\\) in their wallets. <hr> Find the average amount of money of Aaron and Julian. <br> $ <input min=\"0\" type=\"number\" id=\"imp5pg159q1_1\" class=\"lineinput\" placeholder=\"?\">","4694":"Raen bought a necklace and 2 identical bracelets. <br> The average cost of the 3 items was \\(\\$60.\\) <br> A bracelet cost \\(\\$49.\\) <hr>  How much did a necklace cost? <br> $<input min=\"0\" type=\"number\" id=\"imp5pg159q2_1\" class=\"lineinput\" placeholder=\"?\">","4699":"The average cost of a book, a magazine and a dictionary is \\(\\$24.\\) <br> The book costs three times as much as the magazine. <br> The dictionary costs \\(\\$7\\) more than the magazine. <hr> Find the difference in cost between the book and the dictionary. <br> $ <input min=\"0\" type=\"number\" id=\"imp5pg161q6_1\" class=\"lineinput\" placeholder=\"?\">","4761":"Mr Koay had \\(\\$60.\\) <br> \nHe used \\(\\$18\\) to buy a book. <br> \nWhat percentage of his money did he use to buy the book? <br> <input min=\"0\" type=\"number\" id=\"imp5pg170q1a_1\" class=\"lineinput\" placeholder=\"?\">%","4762":"Mr Koay had \\(\\$60.\\) <br> \nHe used \\(\\$18\\) to buy a book. <br> \n What percentage of his money did he have left? <br> <input min=\"0\" type=\"number\" id=\"imp5pg170q1b_1\" class=\"lineinput\" placeholder=\"?\">%","4771":"Max had \\(\\$500.\\) He gave 65% of the money to his parents and spent the rest. How much money did he spend? <br> $ <input min=\"0\" type=\"number\" id =\"imp5pg172q7_1\" class=\"lineinput\" placeholder=\"?\" \/>","4778":"Alicia had \\(\\$200.\\) She spent 15% of the money on food and 24% of the money on clothes. She saved the rest of the money. <br> Find the amount of money that she spent on clothes. <br> $ <input min=\"0\" type=\"number\" id =\"imp5pg174q12a_1\" class=\"lineinput\" placeholder=\"?\" \/>","4779":"Alicia had \\(\\$200.\\) She spent 15% of the money on food and 24% of the money on clothes. She saved the rest of the money. <br> What percentage of the money did she save? <br> <input min=\"0\" type=\"number\" id =\"imp5pg174q12b_1\" class=\"lineinput\" placeholder=\"?\" \/>%","4780":"Alicia had \\(\\$200.\\) She spent 15% of the money on food and 24% of the money on clothes. She saved the rest of the money. <br> How much money did she save? $ <input min=\"0\" type=\"number\" id =\"imp5pg174q12c_1\" class=\"lineinput\" placeholder=\"?\" \/>","4788":"George wants to buy a computer priced at \\(\\$900.\\) In addition, he has to pay 7% tax on the price of the computer. <br>How much tax must George pay? <br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp5pg176q5_1\" class=\"lineinput\" placeholder=\"?\">","4792":"The usual price of a bag was \\(\\$60.\\) Sophia bought it at a discount of 40% during the year-end sale. <br> How much was the discount? <br> Answer : $ <input min=\"0\" type=\"number\" id=\"imp5pg177q10a_1\" class=\"lineinput\" placeholder=\"?\">","4799":"The usual price of a book was \\(\\$15.\\) At a sale, a discount of 40% was given. How much did Dave pay if he bought the book during the sale? <br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp5pg178q13_1\" class=\"lineinput\" placeholder=\"?\">","4800":"The price of a washing machine is \\(\\$460.\\) In addition, buyers need to pay 7% tax.<br> How much money altogether will Mr Tan need to pay for the washing machine? <br> Answer : $ <input min=\"0\" type=\"number\" id=\"imp5pg178q14_1\" class=\"lineinput\" placeholder=\"?\">","4806":"The price of a printer is \\(\\$400.\\) In addition, buyers need to pay a 7%. tax on the sale price. How much must Dan pay for the printer altogether?","4809":"Marvin had \\(\\$50.\\) <br> He spent some of the money and had \\(\\$10\\) left. <br> What percentage of his money did he spend?","4820":"Malcolm spent \\(\\$8.\\) <br> He has \\(\\$32\\) left. <br> What percentage of his money did he spend?  <br> <input min=\"0\" type=\"number\" id=\"imp5pg182q4_1\" class=\"lineinput\" placeholder=\"?\">%","5100":"Lee Lee has \\(\\$90.\\) <br> She spends $n on food. <br> \n\nFind the amount of money she has left in terms of n.","5153":"Molly bought a dress for \\(\\$25.\\)  <br> \nShe also bought a skirt that was $n cheaper than the dress. <br> Find the total cost of the two items in terms of $t.","5154":"Molly bought a dress for \\(\\$25.\\) <br> She also bought a skirt that was $t cheaper than the dress. <br> She gave the cashier \\(\\$100.\\) <br> If t = 5, how much change did she receive?","5269":"Andrew saved $$\\dfrac{5600}{1}$$ of his salary in a bank. He gave $$\\dfrac{5600}{1}$$ of the remainder to his wife and his parents. The ratio of the amount that his wife got to the amount that his parents got was 3 : 7. He spent the rest of the money. <hr> If he spent \\(\\$1400,\\) how much was his salary? <br> <input min=\"0\" type=\"number\" id =\"imp6pg051q9a_1\" class=\"lineinput\" placeholder=\"?\" \/>","5277":"Mr Roy had some money. He gave all the money equally to his four children, Jenson, Keith, Leon and Mark. Mark used got the money that he received on his school fees and saved the rest. <hr> If he saved \\(\\$2400,\\) how much money did Mr Roy have at first? <br> <input min=\"0\" type=\"number\" id =\"imp6pg053q13_1\" class=\"lineinput\" placeholder=\"?\" \/>","5289":"Jerry and Tom had a total of \\(\\$100.\\) <br> After Jerry used $$\\dfrac{3}{4}$$ of his money and Tom used $$\\dfrac{5}{6}$$ of his money, both of them had an equal amount of money left. <br> Find the amount of money that each of them had left. <br> <input min=\"0\" type=\"number\" id=\"imp6pg056q9_1\" class=\"lineinput\" placeholder=\"?\">","5303":"$$\\frac{2}{9}$$ of Kerry's salary is \\(\\$800.\\) <hr> How much IS Kerry's salary ?","5390":"Three children shared a sum of money in the ratio 9,: 8: 1. <hr> It the largest share was \\(\\$216,\\) how much money was being shared?","5405":"Jane had $$\\dfrac{20}{1}$$ as much money as Katherine.<br>After Katherine spent some money on a bag, the ratio of Jane's money to Katherine's money became 6 : 7. <hr> If Jane had \\(\\$240,\\) how much was the cost of the bag? <br> <input min=\"0\" type=\"number\" id =\"imp6pg093q7_1\" class=\"lineinput\" placeholder=\"?\" \/>","5423":"Mdm Hwan had \\(\\$40.\\)<br>She spent \\(\\$6\\) on a movie ticket. <br> What percentage of her money had she spend? <br>Answer : <input min=\"0\" type=\"number\" id=\"imp6pg100q1_1\" class=\"lineinput\" placeholder=\"?\"> %","5425":"Mel had \\(\\$8.\\)<br>He bought a plate of rice for 1 dollar and a burger for 2 dollars.  <br> What percentage of his money was left? <br> <input min=\"0\" type=\"number\" id=\"imp6pg100q3_1\" class=\"lineinput\" placeholder=\"?\"> %","5426":"Gayle bought a bag with a price tag of \\(\\$60.\\)<br>She had to pay 7% tax for the bag. <br> How much was the tax? <br> Answer : $ <input min=\"0\" type=\"number\" id=\"imp6pg100q4_1\" class=\"lineinput\" placeholder=\"?\">","5427":"A train set cost \\(\\$308.\\)<br>During a Christmas sale, it was sold at a discount of 25%. <hr> How much was the discount? <br> <input min=\"0\" type=\"number\" id =\"imp6pg101q5_1\" class=\"lineinput\" placeholder=\"?\" \/>","5433":"A lady bought a sofa which was sold at a price of \\(\\$2545.\\)<br>She also had to pay 7% tax. <br> How much did she pay for the sofa? Round off your answer to the nearest dollar. <br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp6pg102q1_1\" class=\"lineinput\" placeholder=\"?\">","5436":"On a tour in another country, Mabel paid a total of \\(\\$14.70\\) for a meal.<br>Without tax, the meal would have cost only \\(\\$14.\\) <hr> How much was the tax, in $? <br> <input min=\"0\" type=\"number\" id=\"imp6pg103q4a_1\" class=\"lineinput\" placeholder=\"?\">","5437":"On a tour in another country, Mabel paid a total of \\(\\$14.70\\) for a meal.<br>Without tax, the meal would have cost only \\(\\$14.\\) <hr> What percentage of the cost of the meal was the tax?  Round your answer to nearest whole number.<br> <input min=\"0\" type=\"number\" id=\"imp6pg103q4b_1\" class=\"lineinput\" placeholder=\"?\">","5438":"Last year, the price of a certain model of laptop was \\(\\$1200.\\)<br>This year, the price of the same model of laptop was \\(\\$999.\\) <br> Find the percentage decrease in the price.<br>Round off your answer to 1 decimal place. <br>Answer : <input min=\"0\" type=\"number\" id=\"imp6pg103q5_1\" class=\"lineinput\" placeholder=\"?\"> %","5441":"Daddy put some money into his bank account.<br>The account pays an interest of 3% per year.<br>When he received a bank statement at the end of the year, it said that he had earned an interest of \\(\\$97.50.\\) <hr> How much money did he put in the account? <br> <input min=\"0\" type=\"number\" id=\"imp6pg104q8_1\" class=\"lineinput\" placeholder=\"?\">","5445":"Lilian had some money.<br>She spent 60% of the money on some clothes and was left with \\(\\$20.\\) <br> How much money did she have at first? <br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp6pg105q2_1\" class=\"lineinput\" placeholder=\"?\">","5457":"Express 50 cents as a percentage of \\(\\$10.\\)","5487":"Nancy had 20% as much money as Shirley.<br>If Shirley gave Nancy \\(\\$280,\\) they would have the same amount. <br> How much money must Shirley give Nancy if she was to have twice as much as Nancy? <br> Answer : $ <input min=\"0\" type=\"number\" id=\"imp6pg117q7_1\" class=\"lineinput\" placeholder=\"?\">","5488":"Mr Teo and Mrs Teo have some money each.<br>If Mr Teo gives Mrs Teo \\(\\$25,\\) they will have the same amount.<br>If he gives Mrs Teo \\(\\$6,\\) she will have 50% as much money as him.<br> How much do they have in total? <br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp6pg117q8a_1\" class=\"lineinput\" placeholder=\"?\">","5489":"Mr Teo and Mrs Teo have some money each.<br>If Mr Teo gives Mrs Teo \\(\\$25,\\) they will have the same amount of money.<br>If he gives Mrs Teo \\(\\$6,\\) she will have 50% as much money as him.<br> How much does each have? <br> Mrs Teo : $ <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\"><br> Mr Teo : $ <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\">","5576":"The pie chart shows the amount of money that Andrea spent on some items. <br> Andrea spent a total of \\(\\$50.\\) <hr> How much did she spend on bags? <br> $ <input min=\"0\" type=\"number\" id =\"imp6pg172q6a_1\" class=\"lineinput\" placeholder=\"?\" \/>","6851":"After a 25% discount, a jacket costs \\(\\$90.\\) What was the original price of the jacket?","6854":"After receiving a 20% raise, Maria\u2019s new salary is \\(\\$4,800.\\) What was her original salary? <br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","6857":"After getting a 15% increase, Liam's new salary is \\(\\$3,450.\\) What was his original salary?","6858":"After receiving a 25% bonus, Ava\u2019s new salary is \\(\\$5,000.\\) What was her original salary?","6859":"After a 10% raise, Noah\u2019s new salary is \\(\\$2,200.\\) What was his original salary?","6972":"Three friends buy popcorn and drinks at the cinema.\nEach popcorn costs x dollars, and each drink costs y dollars.\nAltogether, they buy 4 popcorns and 3 drinks, spending \\(\\$27.\\)\nIf a drink costs 3 dollar less than a popcorn, find the cost of each item.","7609":"A jacket\u2019s price is reduced by 20%, then by another 10%. The final price is \\(\\$288.\\) What was the original price?","7621":"The ratio of Alice\u2019s savings to Bella\u2019s was 2 : 3. After Alice saved another \\(\\$120,\\) the ratio became 3 : 4. How much did Bella have at first?","7625":"The ratio of the price of a watch to that of a pen was 5 : 2. After each was reduced by \\(\\$15,\\) the ratio became 8 : 3. Find the original price of the watch.","9423":"A pharmacist has 5.625 litres of cough syrup. She pours it into small bottles of 0.125 litres each. <br>If she sells each bottle at \\(\\$4.80,\\) how much money will she collect from selling all the bottles?<br>Answer : <input type=\"text\" class=\"fill-blank-input\"> dollars","9433":"Concert tickets cost 78.50 dollars and 45.25 for children. A group buys 4 adult tickets and 6 children tickets. They receive a group discount of \\(\\$25.80.\\)<br> How much do they pay altogether? <br>Answer : <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\"> dollars","10010":"A shop offers 20% off all items. During a sale, an additional 15% is taken off the discounted price. Mrs Tan bought a handbag with an original price of \\(\\$250.\\) How much did she pay? Is this the same as a 35% discount?","10011":"Two shops sell the same laptop at \\(\\$1800.\\) Shop A offers a 25% discount. Shop B offers a 15% discount followed by an additional 12% off the reduced price. Which shop offers the better deal and by how much?","10014":"The price of a TV inclusive of 9% GST is \\(\\$1635.\\)<br> What is the price before GST? <br>Answer : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10017":"A sum of money was deposited at 4% simple interest per year. After 5 years, the interest earned was \\(\\$600.\\) <br>What was the original sum deposited?<br>Answer : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10022":"The GST-inclusive price of a camera is \\(\\$1090.\\) <br>If GST is 9%, what was the price before GST? <br>If the shop had originally marked up the camera by 25% before GST, what was the cost price of the camera?<br>Price before GST : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\"> <br>Cost price : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10023":"Mr Chen deposited \\(\\$16000\\) at 4% simple interest per year. <br>After 2 years, he withdrew all the money and used it as a down payment for a car costing \\(\\$48000.\\) He paid the remaining amount in 24 equal monthly instalments with 5% annual interest.<br> What is his monthly instalment? <br>Answer : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10025":"A restaurant bill before service charges and GST is \\(\\$200.\\) The restaurant offers a 10% member discount. After the discount, a 10% service charge is added, followed by 8% GST on the total.<br> What is the final bill including service charge and GST? <br>Answer : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10031":"After a 25% discount and 9% GST, the final price of a television is \\(\\$1635.\\) <br>What was the original price before discount and GST? <br>Answer : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10042":"Two stores sell the same tablet for \\(\\$1200.\\) Store X gives a 20% discount. Store Y gives a 10% discount first, then another 15% off the new price. Which store has the better deal and how much money do you save?","10043":"Two electronics stores sell the same gaming console for \\(\\$1500.\\) GameWorld offers a 30% discount. TechZone offers a 20% discount followed by another 15% off the discounted price. <br>Which store offers the lower price and by how much?","10044":"Two bookstores sell the same textbook set for \\(\\$2000.\\) BookMart offers a 35% discount. ReadMore offers a 25% discount followed by an additional 18% off the reduced price.<br> Which bookstore has the better offer and what is the difference in price?","10072":"After giving 36 dollars to his sister, the ratio of David's money to his sister's money became 5 : 4.<br> If David now has \\(\\$90,\\) what was the original ratio of David's money to his sister's money?<br>Original ratio = <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\"> : <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10081":"The ratio of the number of 2-dollar notes to 5-dollar notes to 10-dollar notes in a box is 5 : 4 : 3. The total value of all the notes is \\(\\$720.\\) <br> How many notes are there altogether?   <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10208":"The average weekly allowance of Sam and Alex is \\(\\$9.\\) <br> Sam gets \\(\\$6\\) less allowance than Alex.<br>How much allowance does Sam get each week? <br> Answer : $ <input type=\"text\" class=\"fill-blank-input\">","10223":"Over 6 months, Mr. Tan's average monthly electricity bill was \\(\\$147.65.\\) <br>What was his total electricity bill for the 6 months? <br> Answer : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10226":"Over 3 months, the Johnson family's average monthly grocery bill was \\(\\$285.40.\\) <br>What was their total grocery bill for the 3 months? <br> Answer : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10229":"Over 4 weeks, the Miller family's average weekly allowance for their children was \\(\\$12.50.\\) <br>What was their total allowance spending for the 4 weeks? <br> Answer : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10231":"Over 6 months, the Garcia family's average monthly electricity bill was \\(\\$78.25.\\) <br>What was their total electricity bill for the 6 months? <br> Answer : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10251":"A salesman's average weekly sales for the first 5 weeks was \\(\\$3200.\\) <br>What must his sales be in the 6th week to achieve an average of \\(\\$3500\\) for all 6 weeks? <br>Answer : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10306":"Jason saved \\(\\$258,\\) which was 25% of his salary. What was his salary?  <br>Answer :   $  <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10308":"During a sale, a laptop was sold at a discount of \\(\\$168,\\) which was 24% of the original price. What was the original price of the laptop?  <br>Answer :   $  <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10322":"A shop sold a shirt for \\(\\$63\\) that originally cost \\(\\$45.\\)<br>What was the percentage increase in price? <br>Answer :  <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10324":"After a 20% increase, the price of a book became \\(\\$48.\\) It was then reduced by 25%. What was the final price of the book? <br>Answer :  $  <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10330":"Mr. Lee's salary was \\(\\$4500.\\) After a pay cut, his salary became \\(\\$3825.\\)<br>What was the percentage decrease in his salary? <br>Answer :     <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10331":"A dress was sold at a 30% discount.<br>If the discount was \\(\\$57,\\) what was the original sale price of the dress?<br>Answer :  $   <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10335":"A company's profit decreased by 18% in the first quarter and increased by 25% in the second quarter.<br>If the original profit was \\(\\$50000,\\) what was the profit after the second quarter? <br>Answer :   $  <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10336":"After a 15% decrease, the price of a phone became \\(\\$595.\\) What was the original price? <br>Answer :   $  <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10340":"Mrs. Tan's electricity bill increased from \\(\\$84\\) to \\(\\$105.\\)<br>By what percentage did her bill increase? <br>Answer :    <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10341":"A shop owner bought a watch for \\(\\$240\\) and sold it for \\(\\$312.\\)<br>What was his percentage profit? <br>Answer :    <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10344":"Tom's savings increased by 40% to \\(\\$840.\\) He then spent some money and his savings decreased by 25%. How much did he have finally? <br>Answer :  $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10347":"After a 30% discount and an additional 10% member discount on the reduced price, a bag cost \\(\\$378.\\) What was the original price of the bag? <br>Answer :    $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10349":"Mr. Goh's monthly salary was \\(\\$3600.\\) He received a 15% pay raise. Six months later, due to company losses, his salary was cut by 10%. What was his final salary? <br>Answer :   $  <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10353":"A television was marked at \\(\\$1200.\\) During a sale, it was sold at a 15% discount. The shop still made a 20% profit. What was the cost price of the television? <br>Answer : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10355":"Brand A's sales are 25% more than Brand B's sales. Brand B's sales are 20% less than Brand C's sales. If Brand C's sales were \\(\\$5000,\\) what were Brand A's sales?<br>Answer :   $  <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10359":"A merchant bought goods for \\(\\$800\\) and marked them up by 50%. During a clearance sale, he offered a discount and sold them for \\(\\$840.\\)<br>What was the percentage discount given? <br>Answer :     <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10361":"Sarah had \\(\\$10.\\)<br>She bought a sandwich for 2 dollars and a juice box for 3 dollars.<br>What percentage of her money was left? <br>Answer : <input type=\"text\" class=\"fill-blank-input\"> %","10362":"Jake had \\(\\$12.\\)<br>He bought a toy car for 3 dollars and stickers for 1 dollar.<br>What percentage of his money was left?","10363":"Emma had \\(\\$15.\\)<br>She bought a book for 4 dollars and a pencil for 1 dollar.<br>What percentage of her money was left?","10373":"After getting a 30% bonus, Jake's total earnings became \\(\\$3900.\\) What were his original earnings? <br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","10374":"After a 25% increase, the price of a toy is now \\(\\$60.\\) What was the original price of the toy? <br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","10375":"After receiving a 15% tip, a waiter's total pay for the day was \\(\\$92.\\) What was his pay before the tip? <br>Answer : $ <input type=\"text\" class=\"fill-blank-input\">","10384":"The price of Item X is 25% less than Item Y.<br>The price of Item Y is 60% more than Item Z.<br>The price of Item Z is 20% more than Item W.<br>If Item W costs \\(\\$125,\\) find the total cost of buying one of each item. <br>Answer :  $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10388":"Last year, the price of a certain model of laptop was \\(\\$1200.\\) This year, the price decreased by 15%. Next year, the store plans to increase the price by 10% from this year's price. What will be the percentage change from the original price to next year's price?  <br>Answer :  <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\"> %","10389":"Last year, a laptop and a printer were sold as a bundle for \\(\\$1500.\\) This year, the laptop price decreased by 20% and the printer price increased by 10%.<br> The bundle now costs \\(\\$1350.\\) Find the original price of the laptop and the printer separately. <br>Laptop price : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\"> <br>Printer price : $ <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10390":"A jacket was marked at \\(\\$120.\\) During a sale, the store offered a 25% discount. Members received an additional 20% off the discounted price. What was the final price and the overall percentage discount? <br>Final price :  $  <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">  <br>Overall discount  :   ____ %","10393":"A jacket originally costs 150 dollars and a pair of shoes originally costs \\(\\$100.\\) The jacket was sold at a 40% discount while the shoes were sold at a 25% discount. What was the overall percentage discount for buying both items? <br>Overall Discount :   <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">  %","10425":"Amy had \\(\\$240.\\) She spent some money on a dress and 40% of the remainder on a pair of shoes.<br> She then spent \\(\\$12\\) on lunch and had 60 dollars left.<br>What was the cost of the dress? <br> Answer  :  $  <input min=\"0\" type=\"number\" class=\"lineinput\" placeholder=\"?\">","10694":"Lance and his sister saved \\(\\$100\\) altogether. Lance saved \\(\\$45.\\)<br>Find the ratio of Lance's savings to his sister's savings.<br><input min=\"0\" type=\"number\" id=\"imp5pg097q1_1\" class=\"lineinput\" placeholder=\"?\">","10695":"The usual price of am assessment book is \\(\\$8.\\)<br>At a sale, it is sold at 25% discount.<br>How much does Jerry have to pay for the book during the sale?","10782":"A toy costs \\(\\$1.20\\) and a sticker costs \\(\\$1.00.\\)<br>What is the total cost?","10831":"Mrs Tan has \\(\\$90.\\)\nShe buys a dress for \\(\\$58.\\)\nHow much money does she have left?\n<input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/> \u2212 <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/> = <input type=\"text\" id=\"input_2\" class=\"fill-blank-input\" placeholder=\"?\" \/>\nMrs Tan has $<input type=\"text\" id=\"input_3\" class=\"fill-blank-input\" placeholder=\"?\" \/> left.","10894":"Dan bought a bag.<br>He gave the cashier \\(\\$100.\\) He received \\(\\$25\\) back.<br>How much did the bag cost? The bag cost $<input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>.","10916":"Paul has \\(\\$1.\\)<br>He buys a pencil for 40 cents.<br>How much money has he left? He has _______ cents left.","10922":"Fill in the blanks with the correct amount of money.<br>I have \\(\\$36,\\) I spent \\(\\$17,\\) I left $<input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>.  I have \\(\\$22,\\) I spent $<input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/>, I left \\(\\$8.\\)","10924":"Spaghetti \\(\\$7,\\) Pizza \\(\\$8,\\) Chicken \\(\\$11.\\) Ray spent \\(\\$18\\) at the restaurant.<br>Which 2 items did he buy? Ray bought a <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/> and a <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/>.","10934":"Ravi wants to buy a tub of ice cream that costs \\(\\$5.\\)\nHe has \\(\\$3.\\)\nHow much more money does he need?\nRavi needs $<input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/> more.","10940":"Harry buys 1 of the items.\nHe pays the cashier \\(\\$12.\\)\nHe gets back \\(\\$1\\) from the cashier.\nWhich item does he buy?","10945":"Janice has \\(\\$14.\\)\nWhich item can she buy?","10946":"Peter buys a soccer ball.\nHe gives the cashier \\(\\$20.\\)\nHow much money does he get back?\nPeter gets $<input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/> back.","11211":"Janice has \\(\\$10.\\)<br>She can buy a <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/> and a <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/>.","11212":"The items are on sale in a toy shop.<br>(a) The <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/> costs the least.<br>(b) The <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/> costs the most.<br>(c) The teddy bear costs $<input type=\"text\" id=\"input_2\" class=\"fill-blank-input\" placeholder=\"?\" \/> more than the ball. (d) Penny bought the <input type=\"text\" id=\"input_3\" class=\"fill-blank-input\" placeholder=\"?\" \/> and the <input type=\"text\" id=\"input_4\" class=\"fill-blank-input\" placeholder=\"?\" \/> for \\(\\$40.\\)","11261":"Toys: toy plane \\(\\$15,\\) toy robot \\(\\$17,\\) toy car \\(\\$9,\\) ball \\(\\$18.\\)<br>Jake only has 2 five-dollar notes.<br>Which one of the toys can he buy?","11262":"Toys: toy plane \\(\\$15,\\) toy robot \\(\\$17,\\) toy car \\(\\$9,\\) ball \\(\\$18.\\)<br>Mrs Lee bought two toys for her son.<br>One of the toys she bought was the toy robot.<br>She spent \\(\\$35\\) altogether.<br>Mrs Lee bought the toy robot and the","11370":"Wei Ling had some money.<br>After buying a wallet, he had \\(\\$13\\) left. The wallet costs \\(\\$38.\\)<br>How much did Wei Ling have at first?","11377":"Ahmad had \\(\\$50.\\) He wanted to buy two toys. Which two toys could Ahmad buy with his \\(\\$50\\)?","11382":"A microwave oven costs \\(\\$368.\\) A kettle costs \\(\\$270\\) less than the microwave oven.<br>A fan costs \\(\\$159.\\) How much more does the fan cost than the kettle? The fan costs $<input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/> more than the kettle.","11649":"Mrs Lim bought a dress and 3 pairs of shoes.<br>The dress cost \\(\\$42.\\) She spent a total of \\(\\$66.\\)\na) How much did the 3 pairs of shoes cost?\nb) What was the cost of each pair of shoes? <br>(a) <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/> &nbsp; (b) <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/>","11650":"A stool costs \\(\\$22\\) and a table costs \\(\\$49.\\)<br>Mei Li needs \\(\\$7\\) more to pay for both items.\na) What is the total cost of the stool and table?\nb) How much money does she have? <br>(a) <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/> &nbsp; (b) <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/>","11691":"Ziyang bought 7 handkerchiefs.<br>The cost of each handkerchief was the same.<br>He paid the cashier \\(\\$50\\) and received a change of \\(\\$29.\\)<br>(a) How much did the 7 handkerchiefs cost? Answer: <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>  (b) How much did each handkerchief cost? Answer: <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/>","11704":"Oranges were sold at 5 for \\(\\$1.\\)\nMrs Lim bought some oranges for \\(\\$5.\\)\nHow many oranges did she buy?\n\nAnswer: <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","11718":"Mary spent \\(\\$15\\) to buy some markers. 4 markers are sold in a box for \\(\\$3.\\)<br>How many markers did she buy? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","11720":"Serena bought a cap and a pair of jogging shoes.<br>She had \\(\\$137\\) left. The cap cost \\(\\$28\\) and the jogging shoes cost \\(\\$95.\\)<br>(a) How much did she spend in all? She spent <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/> in all.<br>(b) How much money did she have at first? She had <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/> at first.","11772":"A pen cost \\(\\$2.\\) Rena paid \\(\\$18\\) for a few similar pens.<br>How many pens did she buy? <br>Answer: <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","11874":"Emma wanted to buy a storybook that costs \\(\\$18.\\) She saved \\(\\$3\\) a day starting from Monday.<br>On which day will she be able to buy the book?","11944":"Benny had \\(\\$100.\\)\nToy car \\(\\$19,\\) doll \\(\\$33,\\) basketball \\(\\$22,\\) teddy bear \\(\\$45.\\)\nHe bought 2 different items and had \\(\\$22\\) left.\nWhich items did he buy?","12220":"Ali buys 3 notebooks at \\(\\$2\\) each. How much do the 3 notebooks cost? Ali gave the cashier \\(\\$10.\\)<br>How much change will he receive? The 3 notebooks cost $<input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>. Ali will receive $<input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/> as change.","12334":"Gavin and Jia Hao saved a total of \\(\\$173.45.\\) Gavin saved \\(\\$86.90.\\) How much did Jia Hao save? \\(\\$\\) [?]","12338":"A dress cost \\(\\$84.\\) The dress costs 3 times as much as a shirt. How much does the dress and shirt cost altogether? \\(\\$\\) [?]","12346":"Small and large packets of sweets were sold at a supermarket. A small packet of sweets cost \\(\\$3\\) and a large packet cost \\(\\$4.\\) A total of \\(\\$96\\) was collected from the sale of the small packets of sweets. (a) How many small packets of sweets were sold? (b) 15 more small packets of sweets were sold than the large packets of sweets. How much was collected from the sale of the large packets of sweets? Answers: (a) [?] (b) \\(\\$\\) [?]","12355":"John and Ken shared some money equally at first.<br>After John gave Ken \\(\\$36,\\) how much more money did Ken have than John in the end?","12360":"A book costs \\(\\$20.\\) The book is \\(\\$7.20\\) cheaper than a calculator. How much is the cost of the calculator?","12374":"Michael had two \\(\\$50\\) notes. He bought a bag that cost \\(\\$76.95.\\) How much money had he left? \\(\\$\\)[?]","12383":"Nathan bought a basketball and a pair of shoes for \\(\\$91.50.\\) The basketball cost \\(\\$37.50\\) less than the pair of shoes. How much did the basketball cost? \\(\\$\\)[?]","12397":"Grace bought 6 cakes for a birthday party. Each cake cost \\(\\$54\\) and she paid \\(\\$360.\\) How much change did she receive? \\(\\$\\)[?]","12398":"8 identical magazines cost \\(\\$104.\\) A book costs 3 times as much as a magazine. How much does a book cost? \\(\\$\\)[?]","12411":"Jamie bought a storybook and a pen from a bookshop. How much did she spend altogether?\nStorybook \\(\\$15.90,\\) Pen \\(\\$2.75\\)\nAns: \\(\\$\\)[?]","12435":"Wendy bought 3 similar T-shirts and 2 similar skirts for \\(\\$50.20.\\) 1 such T-shirt and 1 such skirt cost \\(\\$20.20.\\) How much did each T-shirt cost?\nAns: \\(\\$\\)[?]","12458":"5 identical badminton rackets cost \\(\\$440.\\) How much would 7 such badminton rackets cost? \\(\\$\\)[?]","12470":"James and Jane were given the same amount of money. Jane paid \\(\\$29.50\\) for a book and saved \\(\\$25.50.\\) James spent \\(\\$49.95\\) on a toy car. How much did James save?","12492":"Mdm Ng saved \\(\\$138\\) more than Mr Tan. Mdm Ng gave Mr Tan \\(\\$40.\\) How much more money did Mdm Ng have than Mr Tan in the end?\n[?]","12529":"James and Liz had a total of \\(\\$648.\\)<br>Liz had two times as much money as James.<br>How much money must Liz give to James so that each of them will have the same amount of money in the end?","12548":"Beth had some money at first. Ann gave \\(\\$18\\) to Beth. Beth spent \\(\\$36.\\) In the end, Beth had \\(\\$80.\\) How much money did Beth have at first?\nAns: \\(\\$\\)[?]","12550":"A badminton racket and 4 similar soccer balls cost \\(\\$185.\\) The cost of 2 such soccer balls is \\(\\$38.\\) Mdm Lim paid \\(\\$200\\) for the badminton racket and 4 such soccer balls. How much change would she receive? [?]","12574":"Find the value of \\(\\$3.30\\) - \\(\\$0.80.\\) [?]","12593":"Mrs Tan has \\(\\$244\\) to buy some apples to make some pies. The apples are sold in packets of 8. Each packet costs \\(\\$6.\\) What is the maximum number of apples she can buy? [?]","12602":"Raju bought a shirt for \\(\\$16.50.\\) He gave the cashier \\(\\$50.\\) How much change did he receive? [?]","12607":"Sarah bought a pair of shoes for \\(\\$65.70.\\) Ailee paid \\(\\$15.95\\) less for the same pair of shoes. How much did Ailee pay for the pair of shoes? [?]","12687":"If 2 pencils cost \\(\\$1,\\) how much will 14 such pencils cost?","12689":"Benny bought the following items from a shop: Note Book \\(\\$3.45,\\) Mechanical Pencil \\(\\$1.85,\\) Sharpener 80 cents. How much did he spend altogether? [?]","12690":"Jane collected \\(\\$400\\) from his 'red packets' during Chinese New Year. She spent \\(\\$245.\\) How much money had she left? [?]","12692":"Kegan bought 4 bookmarks at \\(\\$2\\) each and a pen that cost \\(\\$6.\\) How much did she pay altogether? [?]","12693":"The table shows a menu of a restaurant: Fish and Chips \\(\\$13.80,\\) Pork Chop \\(\\$12.50,\\) Chicken Chop \\(\\$16.60,\\) Potato Salad \\(\\$5.90.\\) Mr Soh and family ordered 3 different types of food from the menu. What was the largest amount of money he would have to pay? [?]","12694":"Sharon bought a doll for \\(\\$42.75\\) and a brooch for \\(\\$17.50.\\) She had \\(\\$37.20\\) left. How much did she have at first? [?]","12778":"Ali wanted to buy a shirt and a pair of shorts.<br>He has \\(\\$20.\\)<br>How much more does he need?","12783":"Add \\(\\$37.15\\) to \\(\\$70.05.\\) \\(\\$\\)[?]","12784":"Elsa bought a badminton racket for \\(\\$26.50.\\) She gave the cashier \\(\\$50.\\) What is the amount of change she should get? \\(\\$\\)[?]","12795":"The graph shows the number of plates of food sold by different stalls. Each plate of food was sold at \\(\\$3.\\) Which stall would collect a total of \\(\\$450\\) from the number of plates of food sold? [?]","12799":"A badminton racket and a T-shirt cost \\(\\$172.\\) The racket is cost \\(\\$36\\) more than the T-shirt. What is the cost of the T-shirt? \\(\\$\\)[?]","12801":"2 books and 1 bag cost \\(\\$58.\\) 1 book and 1 bag cost \\(\\$43.\\) What is the cost of 1 bag? \\(\\$\\)[?]","12817":"Jack bought a computer and a printer. The computer cost \\(\\$2549.\\) The printer cost \\(\\$1590\\) less than the computer.\n(a) How much did the printer cost? \\(\\$\\)[?]\n(b) How much money did Jack spend altogether? \\(\\$\\)[?]","12819":"Kumar had \\(\\$1542\\) at first. After spending \\(\\$352,\\) Kumar still had \\(\\$157\\) more than Eric. How much money did Eric have? \\(\\$\\)[?]","12835":"Tom wants to buy a water bottle which costs \\(\\$10.\\)<br>The diagram shows the amount of money he has in his wallet.<br>How much more money does he need to buy the water bottle?","12855":"A toy cost 85\u00a2 and a pencil case cost \\(\\$5.70.\\) What was the total cost of the toy and the pencil case? \\(\\$\\)[?]","12864":"A pencil cost \\(\\$1.90\\) and a storybook cost \\(\\$5.30.\\) Emily bought 2 pencils and a storybook. (a) How much did Emily pay altogether? (b) Emily paid for the items using a \\(\\$50\\) note. How much change did she receive? (a) \\(\\$\\)[?] (b) \\(\\$\\)[?]","12866":"A shop sold a cupcake for \\(\\$3\\) and 3 cupcakes for \\(\\$8.\\) (a) Mr Lee bought 4 cupcakes. What was the least amount of money he paid? (b) Mrs Siva paid \\(\\$51\\) for some cupcakes. What was the greatest number of cupcakes Mrs Siva bought? (a) \\(\\$\\)[?] (b) [?]","12871":"Fanny had 3 ten-dollar notes and 2 fifty-cent coins.<br>She bought a toy which cost \\(\\$6.50.\\)<br>How much money had she left?","12898":"Mrs Yong had \\(\\$600.\\) She gave her son \\(\\$120\\) and divided the remaining amount equally among her 3 daughters. How much did each daughter get? [?]","12914":"Gary has \\(\\$108.\\)\nHe has three times as much money as Alice.\nHow much more money does Gary have than Alice?","12933":"Lynn had \\(\\$229\\) and Rachel had \\(\\$359.\\) After Rachel gave Lynn some money, Lynn had three times as much money as Rachel.\na) How much money did the girls have altogether?\nb) How much money did Rachel have in the end? [?] [?]","12934":"Ali and Ben were each given \\(\\$10\\) to spend on food items.\nMenu: Ice-cream \\(\\$2.50,\\) Soda \\(\\$3.10,\\) Burger \\(\\$6.50,\\) Fries \\(\\$4.40,\\) Sandwich \\(\\$3.50,\\) Noodles \\(\\$7.90,\\) Pizza \\(\\$8.50,\\) Salad \\(\\$6.60.\\)\na) Which two items could Ali buy with the exact amount given?\nb) Ben bought 2 different food items. He spent the least possible amount of money. How much change would he receive? [?] [?]","12949":"Gopal bought a shirt for \\(\\$45.50\\) and a belt for \\(\\$34.90.\\) He gave the cashier \\(\\$100.\\) How much change would Gopal get?","12970":"Yilin went to a cake shop to buy some muffins. 1 muffin for \\(\\$1.80.\\) 4 muffins for \\(\\$7.00.\\) What was the maximum number of muffins that Yilin can buy with \\(\\$50\\)? [?]","13007":"Jamie bought a laptop during a sale. The cost of the laptop before the sale was \\(\\$1699.\\) How much change did Jamie receive if she paid the cashier \\(\\$1500\\)? [?]","13033":"Dora had \\(\\$49.90.\\) Her mother gave her another \\(\\$15.\\) She spent \\(\\$18.50.\\) How much money had she left?","13037":"The table shows the price of bus fares for different passengers. Adult \\(\\$1.20\\); Senior citizen (above 60 years old) \\(\\$0.90\\); Child (below 12 years old) \\(\\$0.55.\\) Mrs Tan took her two elderly parents out with her 10 year-old son. Her elderly parents were both 65 years old. What was the total bus fare for the four passengers?","13048":"Meili was left with 90 cents after paying for 2 bars of chocolates and 1 bag of chips. The 2 chocolate bars cost \\(\\$3.30\\) and the bag of chips costs \\(\\$2.00.\\) How much money did she have at first? [?]","13070":"A dress and a T-shirt cost \\(\\$41\\) altogether.\nThe dress costs \\(\\$27.30.\\) How much does the T-shirt cost?","13077":"Cindy spent her money on a bag and a pair of shoes. The bag costs \\(\\$21.90.\\) The pair of shoes costs \\(\\$18\\) more than the bag. How much did she spend altogether? \\(\\$\\)[?]","13078":"Tom saved \\(\\$49.85.\\) Sam saved \\(\\$12.50\\) more than Tom. Paul saved \\(\\$9.85\\) less than Sam. How much did Paul save? \\(\\$\\)[?]","13111":"Ah Koon bakery sold curry puffs at the following prices: 1 for \\(\\$1.50\\) ; 3 for \\(\\$4.\\) Rita bought 13 curry puffs. What is the least amount that she had to pay? \\(\\$\\)[?]","13132":"Rita and Don have \\(\\$5010\\) altogether. Yvonne and Rita have \\(\\$8273\\) altogether. If Yvonne has \\(\\$3958,\\) how much does Don have? [?]","13148":"Daniel bought a fan for \\(\\$44.75\\) and a bread toaster for \\(\\$36.90.\\) How much did he pay altogether?","13151":"Susan has \\(\\$258.\\) She has thrice as much money as Kartijah. How much money do Susan and Kartijah have altogether? [?]","13155":"Halim had some money. He spent \\(\\$40\\) and saved the remaining \\(\\$30.80.\\) (a) How much money did Halim have at first? Halim saved \\(\\$10.60\\) more than Mei Ling. (b) How much money did Mei Ling save? [?] [?]","13167":"Harry has \\(\\$54.30.\\) He wants to buy both the toy car (\\(\\$31.95\\)) and the toy aeroplane (\\(\\$29.80\\)). (a) What is the total cost of a toy car and a toy aeroplane? (b) How much more money does Harry need? [?] [?]","13189":"A baker baked some tarts. The tarts were packed equally into boxes of 8. (a) There were 87 boxes of tarts. How many tarts did he bake in total? (b) The baker received \\(\\$161\\) for some boxes of tarts sold. Each box of tarts cost \\(\\$7.\\) How many tarts did he sell altogether? [?] [?]","13253":"Mary had \\(\\$548.\\) She had \\(\\$245\\) more than her sister. How much did her sister have?\n\nAns: \\(\\$\\)[?]","13260":"A pair of jeans cost \\(\\$66.\\) A skirt is \\(\\$9.20\\) cheaper than the jeans. Find the cost of the skirt.\n\nAns: \\(\\$\\)[?]","13267":"Bottles of soft drinks are sold in cartons of three. Each carton cost \\(\\$7.\\) Mr James has \\(\\$160.\\) What is the greatest number of bottles of soft drinks he can buy?\n\nAns: [?]","13271":"A highlighter costs \\(\\$2.20.\\) An eraser costs \\(\\$0.45.\\)\nWhat is the total cost of a highlighter and two erasers?","13279":"A ticket to the zoo costs \\(\\$31.\\)\nJane has the following amount of money in her wallet.\nHow much more money does she need to pay for a ticket? \\(\\$\\)[?]","13288":"A pair of socks costs \\(\\$8.\\)\nA shirt costs \\(\\$20\\) more than a pair of socks.\nHow much does 2 such shirts cost?\nThe 2 shirts cost \\(\\$\\)[?].","13302":"Joey bought a skipping rope and another item. He spent a total of \\(\\$70.\\) What was the other item bought?\n\nPrice Board \u2014 Basketball \\(\\$56.75,\\) Badminton Racket \\(\\$75.95,\\) Soccer Ball \\(\\$54.65,\\) Skipping Rope \\(\\$15.35\\)","13339":"Each cupcake was sold for \\(\\$3.\\) How much did the cafe collect from all the cupcakes that were sold on Tuesday and Friday? \\(\\$\\)[?]","13342":"A table and 4 similar chairs cost \\(\\$179.60.\\) The table and 1 such chair cost \\(\\$106.40.\\) (a) What was the cost of 3 such chairs? (b) The table cost \\(\\$57.60\\) more than the chair. What is the cost of the table? \\(\\$\\)[?] , \\(\\$\\)[?]","13357":"A bookshop sold a highlighter and a pen for \\(\\$3.\\)<br>Claire bought 6 highlighters and 6 pens.<br>How much did Claire pay altogether?","13360":"A glass of orange juice costs \\(\\$2.50\\) and a glass of lemon juice costs \\(\\$1.80.\\) Claire bought 2 glasses of orange juice and a glass of lemon juice. How much did she pay?","13375":"100 g of cherries cost \\(\\$2.\\) What is the cost of 1 kg of cherries? [?]","13384":"Alan had \\(\\$50.\\) He bought a pair of shorts and a blouse. A blouse cost \\(\\$12\\) more than a pair of shorts. He received \\(\\$2\\) change. How much did a pair of shorts cost? [?]","13446":"Mrs Lee bought a blouse for \\(\\$41.65.\\) She also bought a pair of shoes for \\(\\$33.80.\\) She gave the cashier a \\(\\$100\\) note. How much change did she receive?\n[?]","13479":"A storybook costs \\(\\$40.15.\\) It costs \\(\\$17.65\\) less than a dictionary.\nWhat is the cost of the dictionary?\n\\(\\$\\) [?]","13481":"Fatimah and her family ate at a fast food restaurant.\nThe meal cost \\(\\$33.25.\\) She gave the cashier a \\(\\$50\\) note.\nHow much change should she receive?\n\\(\\$\\) [?]","13487":"Mr Rahim put up a fence around his rectangular garden.\nThe length of the garden is 10 m. Its breadth is 6 m.\nOne metre of fence cost \\(\\$8.\\)\nHow much did Mr Rahim pay for his fence?\n\\(\\$\\) [?]","13489":"A box of 4 muffins cost \\(\\$9.\\) Mrs Lim has \\(\\$120.\\)\nHow many boxes of muffins can she buy at most? [?]","13512":"A toy costs \\(\\$223.50.\\) Keith has the total amount of money shown. How much more money does he need to purchase the toy? Ans: \\(\\$\\) [?]","13525":"Notebooks are sold in a shop as shown. 1 notebook for \\(\\$2.80\\); 3 notebooks for \\(\\$8.\\) Mr Muthu bought 14 notebooks. What was the least amount of money he needed to pay for all the notebooks? Ans: [?]","13548":"A tennis racket cost \\(\\$128.\\) A pair of sports shoes cost \\(\\$19.60\\) less than the tennis racket. How much did the pair of sports shoes cost?\n\\(\\$\\) [?]","13560":"A shirt cost \\(\\$65.30.\\) Mrs Lee bought a bag that cost \\(\\$24.80\\) more than the shirt.\n(a) What was the cost of the bag?\n(b) Mrs Lee gave the cashier a \\(\\$100\\) note to pay for the bag. What was the change she received?\n(a) \\(\\$\\) [?]\n(b) \\(\\$\\) [?]","13565":"Mrs Ong bought a total of 50 notebooks and scissors for \\(\\$154.\\) She paid \\(\\$5\\) for each notebook and \\(\\$2\\) for each pair of scissors.\n(a) How many pairs of scissors did she buy?\n(b) How many notebooks did she buy?\n(a) [?]\n(b) [?]","13587":"A lunch box cost \\(\\$25.\\) A water bottle cost \\(\\$8\\) more than a lunch box. A bag cost twice as much as a lunch box.\na) Which item cost the most? How much did that item cost?\nb) What was the total cost of the 3 items? [?] \\(\\$\\)[?] \\(\\$\\)[?]","13589":"The bar graph represents the number of local and foreign stamps collected by Adam, Ben, Charlie and David.\na) Who had the least number of local and foreign stamps in total?\nb) Who had twice as many foreign stamps as Ben?\nc) Charlie sold some local stamps to Adam. In the end, both of them had the same number of local stamps. Charlie sold each stamp at \\(\\$2.\\) How much did Adam pay for the stamps? [?] [?] \\(\\$\\)[?]","13604":"Bala bought a notebook and a bottle of orange juice.<br>He gave the cashier \\(\\$50.\\)<br>How much change did he get?","13613":"Joyce spent \\(\\$3210\\) on a sofa set. She also bought a piano for \\(\\$5630.\\) How much did she spend altogether? [?]","13629":"Jenny bought 2 cakes and 3 buns for \\(\\$53.40.\\)\nKaren bought 3 cakes and 3 buns for \\(\\$77.40.\\)\na) Find the cost of 1 cake.\nb) Find the cost of 3 buns. [?] [?]","13649":"Find the sum of \\(\\$25.50\\) and \\(\\$7.\\)\nAnswer: \\(\\$\\)[?]","13687":"The picture shows the amount of money in Nurul's wallet. She wanted to buy a handphone charger which costs \\(\\$22.10.\\) How much more money does she need? [?]","13692":"Jamie bought 1 bunch of grapes and 15 apples. She gave the cashier \\(\\$50.\\) How much change did she receive?\n3 apples for \\(\\$4\\)\n1 bunch of grapes for \\(\\$5.35\\) [?]","13719":"A mango cost \\(\\$5.\\) A basket of 4 mangoes cost \\(\\$18.\\) Alicia bought 10 mangoes altogether. What was the least amount of money that she paid for the mangoes? Ans : \\(\\$\\) [?]","13742":"Jinny has \\(\\$249.\\)<br>Karthi has three times as much as Jinny.<br>How much do they have altogether?","13760":"Nurul has 17 notes in her piggy bank. There are only \\(\\$2\\) and \\(\\$5\\) notes in her piggy bank. The total value of the notes is \\(\\$49.\\) How many \\(\\$5\\) notes are there in her piggy bank? [?]","13778":"Miss Foo paid \\(\\$12\\) for a highlighter, a stapler and a file. The file cost \\(\\$5.30.\\) The stapler cost more than the highlighter. The total cost of the highlighter and the stapler was less than the cost of the file.","13786":"2 badminton rackets and 1 basketball cost \\(\\$102.50.\\) 1 badminton racket and 2 basketballs cost \\(\\$107.50.\\) What is the total cost of 1 badminton racket and 1 basketball ? [?]","13801":"Mrs Tan bought a blanket for \\(\\$36.60.\\) She bought a bedsheet for \\(\\$29.90.\\) How much did Mrs Tan pay for the two items altogether?\n\\(\\$\\)[?]","13802":"A plastic box costs \\(\\$13.50.\\) The plastic box costs \\(\\$6.90\\) less than a water bottle. How much does the water bottle cost?\n\\(\\$\\)[?]","13803":"A shirt cost \\(\\$39.90.\\) During a sale Mr Lee paid \\(\\$27.50\\) for it. How much did Mr Lee save?\n\\(\\$\\)[?]","13804":"Moses had \\(\\$30.\\) He bought a box of crayons for \\(\\$15.90.\\) How much did he have left?\n\\(\\$\\)[?]","13817":"An oven cost \\(\\$256\\) in Shop A. The same oven cost twice as much in Shop B. Mary had \\(\\$400.\\) How much change will she receive if she bought an oven from Shop A?\n\\(\\$\\)[?]","13844":"A pair of shoes cost \\(\\$125.80.\\) A blouse cost \\(\\$49.50.\\)\n(a) How much more does the pair of shoes cost than the blouse?\n(b) Sarah bought the pair of shoes. She gave the cashier \\(\\$150.\\) How much change should she receive?\n(a) \\(\\$\\)[?] (b) \\(\\$\\)[?]","13849":"Julia bought a cake for \\(\\$19.30.\\) She had \\(\\$3.80\\) left in her wallet. How much money did she have at first?","13856":"Lionel bought a football for \\(\\$29.90\\) and a water bottle for \\(\\$11.85.\\) He gave the cashier a \\(\\$50\\) note. How much change did he receive from the cashier? \\(\\$\\)[?]","13858":"Mr Tan bought 504 pens. He packed 6 pens into each bag. How many bags did Mr Tan use to pack all the pens? Each pen cost \\(\\$2.\\) How much did Mr Tan pay for all the pens? [?] bags, \\(\\$\\)[?]","13899":"A pen costs \\(\\$3.50.\\) It costs 65\u00a2 less than a box of colour pencils. How much does the box of colour pencils cost? [?]","13902":"Mr Wong wanted to buy a hardcover notebook that cost \\(\\$12.80.\\) However, he found that he needed \\(\\$3.90\\) more.\n(a) How much money did Mr Wong have?\n(b) He decided to buy a cheaper softcover notebook which cost \\(\\$7.50.\\) How much money would Mr Wong have left in the end? [?] [?]","13903":"Sara had \\(\\$30.80\\) at first. She spent some of her money to buy a gift for her mother. Then her father gave her another \\(\\$12.\\) In the end, she had \\(\\$15.50.\\) How much did Sara spend on the gift? [?]","13927":"Arrange the items from the most expensive to the cheapest.\nstorybook \\(\\$18.95,\\) bag \\(\\$39.90,\\) water bottle \\(\\$20.50\\)","13937":"Jimmy spent \\(\\$18.80\\) for lunch. Which two food items did he order?\nFrench fries \\(\\$8.90,\\) Ice-cream \\(\\$7.90,\\) Burger \\(\\$9.90\\)","13940":"Randy bought two T-shirts from a shop. The amount of change he received is shown.\n(a) How much change did Randy receive? \\(\\$\\)[?]\n(b) Randy wanted to buy a cap that cost \\(\\$18.50.\\) How much more money does he need to buy the cap? \\(\\$\\)[?]","13964":"Paul bought a toy robot and a deck of cards.\nThe toy robot cost \\(\\$29.30\\) and the deck of cards cost \\(\\$16.75.\\)\nHow much did he pay altogether?","13965":"Jane accidentally spilled some ink on a receipt.\nXYZ Bookstore Receipt \u2014 Highlighter \\(\\$3.50,\\) Book \\(\\$9.90,\\) Pencil Case \\(\\$6.\\)[ink], Total \\(\\$20.\\)[ink]5.\nWhat was the greatest possible total amount on the receipt?","13971":"A jacket cost \\(\\$59.90.\\)\nA skirt cost \\(\\$39.50\\) less than the jacket.\n(a) What was the cost of the skirt? [?]\nSiti bought the jacket and the skirt.\n(b) How much did she pay for the two items? [?]","13983":"Kiki and Wati saved a total of \\(\\$8362.\\) Kiki saved \\(\\$3408.\\)\n(a) How much money did Wati save?\n(b) How much more money did Wati save than Kiki? \\(\\$\\)[?] \\(\\$\\)[?]","13988":"Joselin bought a table for \\(\\$72.15.\\) She gave the cashier two \\(\\$50\\) notes. How much change should she get?","13993":"Serena bought a pencil box for \\(\\$28.50.\\) She bought a bag that cost \\(\\$15.90\\) more. How much did she pay for the bag? \\(\\$\\)[?]","13994":"Jason has \\(\\$6.50.\\) a) Which food item can he buy? b) How much change should he get?\nBurger \\(\\$7.50,\\) Fries \\(\\$4.40\\)","13997":"Candy had \\(\\$50.\\) She wanted to buy a chocolate cake for her mother's birthday. The prices of a chocolate cake sold in Shop A and B are shown. Price of chocolate cake in Shop A: \\(\\$49.85.\\) Price of chocolate cake in Shop B: \\(\\$64.50.\\)\na) Which shop should she buy from?\nb) Find the difference in the price of the chocolate cakes sold in these two shops. [?] \\(\\$\\)[?]","14011":"Jerina donated \\(\\$9.\\) Gabriel donated 5 times as much money as Jerina. How much money did Gabriel donate? [?]","14051":"Jasmine saved \\(\\$3463.\\) She saved \\(\\$445\\) more than Ally. How much money did they save altogether? \\(\\$\\)[?]","14054":"Tom has \\(\\$34.55.\\) His mother gives him \\(\\$50\\) more. How much does Tom have now? \\(\\$\\)[?]","14063":"Jack had \\(\\$64.\\) He bought an ice cream for \\(\\$7.65\\) and a drink for \\(\\$3.50.\\) How much money did he have left? \\(\\$\\)[?]","14069":"The price of a toy car is \\(\\$8.\\) Jane bought as many toy cars as she could with \\(\\$50.\\) (a) How many toy cars did Jane buy? (b) How much money had she left? [?] \\(\\$\\)[?]","14086":"Buy 4 sticks of ice-cream for \\(\\$3.\\) Ben bought 528 sticks of ice-cream for a carnival. How much did he spend altogether? \\(\\$\\)[?]","14190":"Mr Lim bought a pair of headphones for \\(\\$62.60.\\) He bought a watch that cost \\(\\$17.50\\) less. How much did he pay in total? [?]","14193":"4 T-shirts and 5 pairs of shorts cost \\(\\$116.\\) A T-shirt and a pair of shorts cost \\(\\$27.\\) How much does a pair of shorts cost? [?]","14235":"A fan costs \\(\\$23.10.\\) A toy car costs \\(\\$10.80\\) less than the fan. How much does the toy car cost? \\(\\$\\)[?]","14246":"A shop sells keychains at the prices shown. 1 keychain costs \\(\\$5.\\) 1 box of 4 keychains costs \\(\\$13.\\) Special Offer: Buy 2 boxes of keychains, get 1 keychain free! (a) Sally bought only 3 keychains. How much did she pay for them? \\(\\$\\)[?] (b) Eryn wants to buy 14 keychains. What is the least amount of money she needs to buy them? \\(\\$\\)[?]","14266":"A wallet costs \\(\\$56.90.\\) A water bottle costs \\(\\$12.50\\) less than the wallet. How much does the water bottle cost? [?]","14271":"The bar graph shows the number of egg sandwiches and tuna sandwiches sold at Nanyang Cafe from Monday to Thursday.\n(a) How many more tuna sandwiches than egg sandwiches were sold on Tuesday?\n(b) Which day had the greatest difference in the number of egg sandwiches and tuna sandwiches sold?\n(c) The cafe sold each egg sandwich for \\(\\$2.\\) What was the total amount collected from the sale of egg sandwiches on Wednesday and Thursday? [?] [?] [?]","14283":"A bakery sold a set of doughnut and sandwich for a total of \\(\\$3.\\)<br>Ariel used all these notes and coins to pay for the items.<br>How many sets of doughnuts and sandwiches did Ariel buy in total?","14295":"A shop sold pens at \\(\\$3\\) each and files at \\(\\$4\\) each. (a) Mrs Goh bought 15 files. How much did she pay for the files? Ans: (a) [?]   (b) Mr Lim bought a total of 18 pens and files for \\(\\$61.\\) How many pens and files did he buy? Ans: (b) pens: [?] files: [?]","14308":"Gopal bought a shirt for \\(\\$45.50\\) and a belt for \\(\\$34.90.\\) He gave the cashier \\(\\$100.\\) How much change would Gopal get?","14344":"Joel saved \\(\\$2461.\\) He saved \\(\\$339\\) less than Raju. How much money did Raju save?","14351":"The bar graph shows the number of footballs sold in a shop from Monday to Friday. Each football was sold for \\(\\$9.\\) How much more money did the shop collect on Tuesday compared to Monday? Ans: \\(\\$\\) [?]","14368":"A file cost \\(\\$16.75.\\) A t-shirt cost \\(\\$67.50\\) more than the file. How much did the t-shirt cost?","14384":"Anusha wanted to buy a doll that cost \\(\\$94.75.\\) She had \\(\\$36.50\\) in savings and her mother gave her \\(\\$20.\\) How much more money did she need to buy the doll? [?]","14388":"Ming En had \\(\\$289.60\\) at first. After spending \\(\\$45\\) on a meal and receiving some money from his mother, he had \\(\\$300.60.\\) How much money did he receive from his mother? [?]","14401":"Lando bought a toy. He gave the cashier \\(\\$10\\) and received a change of \\(\\$3.75.\\) How much did the toy cost? \\(\\$\\)[?]","14402":"A pencil case costs \\(\\$8.\\) A book costs \\(\\$13\\) more than the pencil case. Caesar bought 2 such books and one such pencil case. How much money did Caesar spend altogether? \\(\\$\\)[?]","14423":"Isaac wants to buy an apple for 80\u00a2, a bunch of bananas for \\(\\$1.25\\) and an orange for 75\u00a2. He only has \\(\\$2.50.\\) How much more money does he need?","14432":"Ahmad has \\(\\$21.30.\\) Peter has \\(\\$3.20\\) less than Ahmad. How much do the two boys have altogether? \\(\\$\\)[?]","14447":"Mr Aw had \\(\\$650.\\) He had \\(\\$127\\) more than Mr Goh. How much money did Mr Goh have?\n\\(\\$\\)[?]","14449":"A bag of 3 apples cost \\(\\$5.\\) How much did Ms Yee pay for 18 apples?\n\\(\\$\\)[?]","14468":"(a) A bag cost \\(\\$95.20.\\) During a sale, Mary paid \\(\\$75.80\\) for it. How much did Mary save?\n(b) Mary gave the cashier two \\(\\$50\\) notes. How much change did she receive? [?] [?]","14503":"James and Jane were given the same amount of money. Jane paid \\(\\$29.50\\) for a book and saved \\(\\$25.50.\\) James spent \\(\\$49.95\\) on a toy car. How much did James save?","14525":"Mdm Ng saved \\(\\$138\\) more than Mr Tan. Mdm Ng gave Mr Tan \\(\\$40.\\) How much more money did Mdm Ng have than Mr Tan in the end?\n\\(\\$\\)[?]","14536":"A shirt costs \\(\\$42.\\) A cap costs \\(\\$19.40\\) less than the shirt. How much does the cap cost?\n\\(\\$\\)[?]","14537":"An adult ticket to a theme park costs \\(\\$25.50.\\) A child ticket costs \\(\\$11.20.\\) How much does a family of 2 adults and 1 child pay?\n\\(\\$\\)[?]","14548":"The bar graph shows the number of children who went to an indoor playground from Monday to Friday. (a) On which day had the least number of children going to the indoor playground? (b) On which day was there 150 fewer children than on Tuesday? (c) On which day was there twice the number of children as on Monday? (d) Each child ticket cost \\(\\$8.\\) How much money did the indoor playground collect on Thursday? [?] [?] [?] \\(\\$\\)[?]","14658":"Xiaomin only had five coins in her purse: \\(\\$1,\\) 50\u00a2, 20\u00a2, 10\u00a2 and 5\u00a2.<br>She donated two coins from her purse to charity during Children's Day.<br>Which of the following amounts could she have donated?","14676":"Mary had \\(\\$548.\\) She had \\(\\$245\\) more than her sister. How much did her sister have?\n\n\\(\\$\\)[?]","14683":"A pair of jeans cost \\(\\$66.\\) A skirt is \\(\\$9.20\\) cheaper than the jeans. Find the cost of the skirt.\n\n\\(\\$\\)[?]","14690":"Bottles of soft drinks are sold in cartons of three. Each carton cost \\(\\$7.\\) Mr James has \\(\\$160.\\) What is the greatest number of bottles of soft drinks he can buy?\n\n[?]","14699":"Sally bought 7 similar toy cars for \\(\\$504.\\)<br>How much did she pay for each toy car?","14703":"Jamie has \\(\\$486.\\) Amy has 9 times the amount of money that Jamie has. How much money does Amy have? \\(\\$\\)[?]","14711":"Shakilah spent \\(\\$9.65\\) on a burger set. Her father then gave her another \\(\\$39.40.\\) She had \\(\\$89.50\\) in the end. How much money did she have at first? \\(\\$\\)[?]","14714":"Jensen had \\(\\$489.\\) He had \\(\\$285\\) more than Ariz. Ariz had 4 times as much money as Laura. How much money did Laura have? \\(\\$\\)[?]","14727":"Mr Wong bought two shirts. He gave the cashier \\(\\$140\\) and received \\(\\$3.40\\) as change. Which two shirts did he buy? (Shirt A = \\(\\$64.25,\\) Shirt B = \\(\\$66.90,\\) Shirt C = \\(\\$72.35\\))","14745":"Grace bought 6 cakes for a birthday party. Each cake cost \\(\\$54\\) and she paid \\(\\$360.\\) How much change did she receive? [?]","14746":"8 identical magazines cost \\(\\$104.\\) A book costs 3 times as much as a magazine. How much does a book cost? [?]","14763":"The picture shows the amount of money that Alex has.<br>He wants to buy a toy which costs \\(\\$15.\\)<br>How much more money does Alex need?","14770":"Mrs Lee bought a dress for \\(\\$39.90\\) and a pair of shoes for \\(\\$58.50.\\) She had \\(\\$24.10\\) left.\n(a) How much did the dress and shoes cost?\n(b) How much money did Mrs Lee have at first?\nAns: (a) [?] (b) [?]","14799":"Jack bought a computer and a printer. The computer cost \\(\\$2549.\\) The printer cost \\(\\$1590\\) less than the computer.\n(a) How much did the printer cost? \\(\\$\\)[?]\n(b) How much money did Jack spend altogether? \\(\\$\\)[?]","14801":"Kumar had \\(\\$1542\\) at first. After spending \\(\\$352,\\) Kumar still had \\(\\$157\\) more than Eric. How much money did Eric have?\n\\(\\$\\)[?]","14805":"Mrs Lee wants to buy the dress.<br>She has only \\(\\$35.\\)<br>How much more money does she need?","14834":"Gina and Tina wanted to buy presents for their mother. They bought her a dress costing \\(\\$90\\) and a handbag costing \\(\\$186.\\) (a) What was the total cost of both items? (b) Gina paid three times as much as Tina for the items. How much did Tina pay? [?] [?]","14864":"Mrs Tan spent \\(\\$568.\\) Mrs Chandran spent twice as much money as Mrs Tan. Mdm Zu spent \\(\\$300\\) less than Mrs Chandran. (a) How much money did Mrs Chandran spend? (b) How much more money did Mdm Zu spend than Mrs Tan? (a) \\(\\$\\)[?] (b) \\(\\$\\)[?]","14865":"In a bakery shop, 3 buns are sold for \\(\\$8.\\) (a) Mrs Han has \\(\\$50.\\) How many buns can Mrs Han buy at most? (b) Mr Sng bought 81 buns. How much did he pay for the buns? (a) [?] (b) \\(\\$\\)[?]","14884":"Mr Ong bought a lego set for \\(\\$26.35\\) and a board game for \\(\\$37.95.\\) How much did he pay for the two items? \\(\\$\\)[?]","14887":"A bag of 3 oranges costs \\(\\$7.\\) How many oranges can be bought with \\(\\$56\\)? [?]","14888":"JACY'S KITCHEN SUPPLIES: frying pan \\(\\$28.40,\\) chopping board \\(\\$58.70,\\) blender \\(\\$65.60,\\) cooking pot \\(\\$31.30.\\) Miss Wong bought two of the items. She paid with two \\(\\$50\\)-notes and received a change of \\(\\$6.\\) Which two items did Miss Wong buy?","14891":"Last Saturday, Mrs Wang went to the zoo with her two children. Mrs Wang bought an adult and two children tickets. An adult ticket cost \\(\\$48.\\) It cost \\(\\$15\\) more than a child ticket.\n(a) How much did a child ticket cost?\n(b) How much did Mrs Wang pay for all the three tickets? \\(\\$\\)[?] \\(\\$\\)[?]","14896":"+ [?] = \\(\\$100\\)\nWrite the missing amount to make \\(\\$100.\\)\n\\(\\$\\)[?]","14897":"Dave gave the cashier a \\(\\$50\\) note to pay for a book that cost \\(\\$34.65.\\)\nHow much change will he get?\n\\(\\$\\)[?]","14901":"Some items sold in a sports shop are shown. Football costs \\(\\$69.99,\\) Table Tennis Set costs \\(\\$12.90\\) and Baseball Set costs \\(\\$98.50.\\)\nJack has \\(\\$110\\) to spend.\nWhat are the 2 different items he can buy?\n[?] and [?]","14917":"Joey bought a skipping rope and another item.<br>He spent a total of \\(\\$70.\\)<br>What was the other item bought?","14934":"Roy had \\(\\$30.\\) His father then gave him some money. After spending \\(\\$15\\) on a storybook, Roy had \\(\\$38\\) left. How much money did Roy receive from his father? [?]","14943":"Mr Tan bought a pair of trousers for \\(\\$73.40.\\) He gave the cashier two \\(\\$50\\) notes. How much change did he receive?","14945":"Mrs Lim had some money. She gave \\(\\$758\\) to her son. She received \\(\\$1479\\) from her husband. In the end, she had \\(\\$1921.\\) How much money did she have at first?","14950":"Ming wanted to buy a board game for \\(\\$82.40.\\) He had \\(\\$27.80.\\) How much more money would he need to buy the board game?\n\\(\\$\\)[?]","14956":"Jenny bought 48 eggs. Each tray of 6 eggs cost \\(\\$3.\\) For every tray of 6 eggs bought, she would get 2 more eggs free. What was the amount of money Jenny spent on the eggs?\n\\(\\$\\)[?]","14959":"Each slice of cake costs \\(\\$6.\\) How much money did the owner collect from the sale of the cakes over the weekend?\n\\(\\$\\)[?]","14962":"4 whistles and 5 caps cost \\(\\$55.\\) 4 whistles and 2 caps cost \\(\\$34.\\) What is the cost of 4 caps? [?]","14974":"David bought a basketball for \\(\\$21.98.\\) He gave the cashier a \\(\\$100\\) note. How much change did he receive?","14982":"Ryan bought a pair of sports shoes that cost \\(\\$68.95\\) and a sports bag for \\(\\$24.90.\\) How much did he spend in total?\n\\(\\$\\)[?]","14997":"Each bag of 3 oranges is sold for \\(\\$2.\\)<br>How much must Mrs Tan pay to buy 24 oranges?","15009":"Kumar bought a toy car and a teddy bear. He gave the cashier \\(\\$50\\) and received a change of 85\u00a2. The toy car cost \\(\\$20.40.\\) How much did the teddy bear cost? [?]","15013":"The diagram shows the prices of Zoo entrance tickets. Child: \\(\\$7.\\) Adult: \\(\\$22.\\) [?] How much do 1 child and 1 adult ticket cost altogether? [?] Some children went to the zoo. They paid a total of \\(\\$126\\) for their tickets. How many children went to the zoo?","15085":"A scarf costs \\(\\$68.20.\\) It costs \\(\\$12.50\\) less than a blouse. What is the price of the blouse? Give your answer in \\$. [?]","15115":"5 chairs cost \\(\\$160.\\)<br>A table cost 9 times as much as a chair.<br>How much does a table cost?\n<input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","15116":"Jason bought a book and a file. The book cost \\(\\$11.85\\) and the file cost \\(\\$9.55.\\) He gave the cashier \\(\\$50.\\)\na) How much did the book and file cost in total?\nb) How much change did Jason receive?\n[?] , [?]","15143":"The total amount of 21 \\(\\$2\\) notes and \\(\\$5\\) notes is \\(\\$60.\\)\nHow many \\(\\$5\\) notes are there? [?]","15147":"Jonathan paid \\(\\$50\\) to the cashier for 8 identical files and received a change of \\(\\$18.\\)\n(a) How much did each file cost?\n(b) Jonathan returned to the shop and bought a pen. The file cost 4 times as much as the pen. How much did he spend on the 8 files and the pen? \\(\\$\\)[?] \\(\\$\\)[?]","15156":"Sandy gave the cashier a \\(\\$10\\) note and received \\(\\$2.70\\) as change. Which two items did she buy?\nSalad \\(\\$7.90,\\) Burger \\(\\$4.80,\\) Fries \\(\\$3.10,\\) Drink \\(\\$2.50\\)","15170":"Doughnuts are sold at the price: 1 for \\(\\$2,\\) 4 for \\(\\$7.\\) (a) Mei Ling bought 3 doughnuts. How much did she pay? (b) Raja bought 9 doughnuts. What was the least amount of money he paid? [?] [?]","15187":"The bar graph shows the number of ice cream cones Mr Ahmad sold over 5 days. Each ice cream cone was sold for \\(\\$3.\\) How much money did Mr Ahmad collect on Wednesday?\nAns: \\(\\$\\)[?]","15191":"Mrs Tan spent \\(\\$35.\\)<br>How many mangoes did she buy?\nAns: <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","15213":"A T-shirt cost \\(\\$25.20.\\) A skirt cost \\(\\$19.30.\\) Sally had \\(\\$15\\) left after paying for a T-shirt and a skirt. How much money did Sally have at first?","15224":"Timmy has \\(\\$100.\\) He spends \\(\\$29.90\\) on a pizza and \\(\\$12.50\\) on a movie ticket. He saves the rest of the money. How much money does he save?\n\\(\\$\\)[?]","15237":"Find the sum of \\(\\$7.65\\) and \\(\\$99.55.\\) \\(\\$\\)[?]","15238":"Jia Jia bought a wallet for \\(\\$84.\\) She gave the cashier 2 pieces of \\(\\$50\\) notes. The cashier gave her the change in \\(\\$2\\) notes. How many \\(\\$2\\) notes did Jia Jia receive? [?]","15247":"John had \\(\\$156.\\) He wanted to buy a soccer ball which cost \\(\\$79\\) and a jacket that cost \\(\\$150.\\) How much more money would John need to save in order to buy these two items? [?]","15259":"The bar graph shows the number of ice-cream cones sold at a funfair.<br>Each ice-cream cone was sold for \\(\\$2.\\)<br>What was the total amount received from the sale of the ice-cream cones?","15261":"Mother bought a cake and 2 slices of pie. She gave the cashier \\(\\$50.\\) How much change did she receive? 1 cake for \\(\\$27.15.\\) 1 slice of pie for \\(\\$1.40.\\)","15268":"Pen \\(\\$1.75.\\) Eraser 65\u00a2. Highlighter \\(\\$2.15.\\) Stapler \\(\\$4.90.\\) What is the price difference between the cheapest and most expensive item? \\(\\$\\)[?]","15275":"\\(\\$9\\) per packet. Buy 1 packet and get 2 pens free. (a) Mdm Aishah needs 48 pens. What is the least amount of money she has to pay? (b) Sam has \\(\\$46.\\) What is the greatest number of pens he can get? \\(\\$\\)[?] [?]","15284":"Gerry bought a plate of Nasi Lemak and a bowl of Laksa. She gave the cashier \\(\\$20.\\) How much change did she receive?\n\\(\\$\\)[?]","15285":"Faith had \\(\\$16.\\) She bought two different dishes from the food stall. Which two possible dishes could she buy? How much did she spend?\nDishes: [?] and [?]\nAmount spent: \\(\\$\\)[?]","15287":"Joan bought a handbag for \\(\\$85.20.\\) She bought a coin pouch that cost \\(\\$24.80\\) less than the handbag. How much money did she spend on the handbag and coin pouch altogether?\n\\(\\$\\)[?]","15288":"A watch usually cost \\(\\$176.20.\\) Annie bought 2 watches for \\(\\$305.50\\) during a sale. How much money did she save altogether?\n\\(\\$\\)[?]","15293":"A bag of 4 mangoes cost \\(\\$7.\\)<br>How much did Ms Nurul pay for 20 mangoes?","15307":"Write the missing amount that makes \\(\\$100.\\)\n\\(\\$53.40\\) + \\(\\$\\)[?] = \\(\\$100\\)","15313":"On Monday, Devi sold a total of 42 cupcakes. She sold the cupcakes in boxes of 6.\n(a) How many boxes of cupcakes did she sell?\n(b) Every box was sold for \\(\\$8.\\) How much money did Devi collect?\n(a) [?]\n(b) \\(\\$\\)[?]","15315":"Chloe bought a dress for \\(\\$38.40\\) and a T-shirt for \\(\\$24.50.\\)\n(a) How much did she spend in total?\n(b) How much more does the dress cost than the T-shirt?\n(a) \\(\\$\\)[?]\n(b) \\(\\$\\)[?]","15330":"Mrs Lim bought 2 identical watches and 3 identical necklaces. Each watch cost \\(\\$51.\\) 2 watches cost as much as 3 necklaces. How much did Mrs Lim pay for the 2 watches? [?]","15331":"Mrs Lim bought 2 identical watches and 3 identical necklaces. Each watch cost \\(\\$51.\\) 2 watches cost as much as 3 necklaces. What was the cost of 1 necklace? [?]","15332":"A bakery is having a sale. For every 3 muffins a customer buys, he will get another muffin free. 3 muffins cost \\(\\$5.\\) Li Min has \\(\\$5.\\) How many muffins can Li Min get with all her money? [?]","15333":"A bakery is having a sale. For every 3 muffins a customer buys, he will get another muffin free. 3 muffins cost \\(\\$5.\\) David wants to get 24 muffins for a party. How much must David pay to get 24 muffins? [?]","15364":"Leo bought a toy car that cost \\(\\$13.85.\\) He paid an additional \\(\\$1.50\\) for a box. How much did he spend in all? Leo paid the cashier with two \\(\\$10\\)-notes. How much change did he receive?\n[?] , [?]","15382":"Lily has some money. After her mother gave her \\(\\$3.60.\\) She had \\(\\$13.\\) How much did she have at first?","15387":"A pencil costs \\(\\$3.\\) Andy has \\(\\$12,\\) two 50-cent coins, one 50-cent coin and three 20-cent coins. Ben has some notes and coins. Who has enough money to buy the pencil?","15389":"Joe bought a tie for \\(\\$19.90\\) and a gift for \\(\\$8.50.\\) He had \\(\\$4\\) left. How much did he have at first? [?]","15404":"There are 5 items. Kyan spent \\(\\$18\\) on 3 different items. What did Kyan buy?\nbun \\(\\$2.40,\\) doughnut \\(\\$5.80,\\) muffin \\(\\$5.40,\\) sandwich \\(\\$6.80,\\) cake \\(\\$11.20\\)","15407":"Muthu bought a remote control car for \\(\\$64.70\\) and a toy plane for \\(\\$25.80.\\) He had \\(\\$8.60\\) left after buying the 2 items. How much money did Muthu have at first? [?]","15423":"Rani baked 96 cupcakes. She packed 4 cupcakes in a box. She sold each box for \\(\\$8.\\) How much did Rani collect from selling all the boxes of cupcakes? [?]","15434":"Sarah has \\(\\$1048.\\) Mei Ling has \\(\\$476\\) less than Sarah. How much money does Mei Ling have?\n\\(\\$\\)[?]","15437":"A sofa costs \\(\\$3000.\\) The sofa costs \\(\\$695\\) more than the cupboard. How much does the cupboard cost?\n\\(\\$\\)[?]","15438":"A sofa costs \\(\\$3000.\\) Mr Ahmad wants to buy a sofa. He only has \\(\\$2865.\\) How much more money does he need?\n\\(\\$\\)[?]","15444":"Item A costs \\(\\$48.90,\\) Item B costs \\(\\$90.80,\\) Item C costs \\(\\$89.40.\\) Which item is the most expensive?","15450":"Jim and Priya spent \\(\\$42.40\\) on lunch together. Jim ordered Pasta (\\(\\$16.90\\)). Burger costs \\(\\$19.50,\\) Pizza costs \\(\\$25.50,\\) Fish and Chips costs \\(\\$22.10.\\) Which item did Priya order?","15466":"5 chairs cost as much as 3 tables.<br>A table cost \\(\\$90.\\)<br>What is the cost of 1 chair? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","15502":"The bar graph shows the number of each type of fish Mr Lee sold last Sunday.\nMr Lee sold each fish for \\(\\$4.\\)\nHow much did Mr Lee collect from selling all guppies and goldfish?\nAns: \\(\\$\\)[?]","15503":"Mrs Lee bought a dress for \\(\\$39.90\\) and a pair of shoes for \\(\\$56.80.\\)\nShe gave the cashier a \\(\\$100\\) note\nHow much change should Mrs Lee get?\nAns: \\(\\$\\)[?]","15512":"Sally wants to buy the pair of sneakers. She only has \\(\\$13.60.\\) How much more money does she need? Answer: \\(\\$\\)[?]","15516":"Desmond and Judy went to a sports shop. Desmond bought a pair of socks and a helmet. Judy bought a pair of skates. Skates cost \\(\\$125.90,\\) helmet \\(\\$46.80\\) and socks \\(\\$10.60.\\) How much more money did Judy spend than Desmond? Answer: \\(\\$\\)[?]","15524":"The bar graph shows the number of burgers sold in 5 days.<br>Each burger was sold at \\(\\$6.\\)<br>How much money was collected for the burgers sold on Tuesday?","15526":"A packet of chicken rice costs \\(\\$7.\\) How much do 5 packets of chicken rice cost? \\(\\$\\)[?]","15533":"Amin had \\(\\$49\\) more than Bala. (a) After Amin gave \\(\\$7\\) to Bala, how much more money did Amin have than Bala in the end? (b) After getting the money from Amin, Bala had \\(\\$55.\\) How much money did both children have altogether? [?] [?]","15545":"Aini baked 104 chocolate muffins and 128 blueberry muffins. She packed the muffins in bags of 6.\n(a) How many bags of muffins did she pack at most?\n(b) Aini sold each bag of muffins for \\(\\$9.\\) How much money did she receive if she sold all the bags of muffins?\n(a) [?] (b) \\(\\$\\)[?]","15554":"The table shows how Kathy spent her money (Pencil Case \\(\\$7,\\) Magazine \\(\\$15,\\) Toys \\(\\$20,\\) Storybook \\(\\$15\\)). Which of the following bar graphs best represents Kathy's spending shown in the table?","15592":"James bought 5 pencils and 2 markers for \\(\\$27.\\) 1 marker cost twice as much as a pencil. How much did a marker cost?\n\\(\\$\\)[?]","15606":"Peter and John had the same amount of money at first. After Peter spent \\(\\$156\\) and John spent \\(\\$12,\\) John had 4 times as much money left as Peter. How much did John have at first?\n\\(\\$\\)[?]","15628":"Peter and James have a total of \\(\\$7950.\\)<br>Peter has twice as much money as James.<br>How much money must Peter give to James so that they will have the same amount of money?","15660":"Lucy bought a storybook for \\(\\$10.95\\) and a file for \\(\\$2.70.\\) She gave the cashier \\(\\$20.\\) How much change did she receive?","15673":"After Muthu had given Joseph \\(\\$4,\\) how much more money would Muthu have than Joseph?\n[?]","15678":"Siti and Ahmad spent a total of \\(\\$200.25\\) at the supermarket. Siti spent \\(\\$102.90.\\) How much more did Siti spend than Ahmad?\n[?]","15693":"In a bakery, muffins were only sold in boxes. A box of 4 big muffins cost \\(\\$11\\) and a box of 6 mini muffins cost \\(\\$8.\\) Jenny bought the same number of big muffins and mini muffins. What was the least possible amount of money she would have paid for the muffins?\n[?]","15709":"Dan had \\(\\$20.\\) He bought a book for \\(\\$17.80\\) and the cashier gave him the change in twenty-cent coins. How many twenty-cent coins did Dan receive?","15731":"The total cost of a bookshelf and study table is \\(\\$3500.\\) The study table cost \\(\\$720\\) more than the bookshelf. (a) What is the cost of the bookshelf? (b) A sofa cost twice as much as the bookshelf. What is the total cost of the bookshelf, study table and sofa? [?] , [?]","15735":"Mr Wallace and Mrs Zee bought washing powder from a shop. The prices are: 1 box for \\(\\$1.95\\); or buy three boxes AND get one box free for a total of \\(\\$5.60.\\) (a) Mr Wallace bought 2 boxes of washing powder from the shop. How much did he pay in all? (b) Mrs Zee needed 13 boxes of washing powder. What is the least amount of money she spent to purchase the washing powder from the shop? [?] , [?]","15769":"Mason has \\(\\$740\\) and Amin has \\(\\$198.\\) How much money must Mason give to Amin so that both of them have the same amount of money?\n[?]","15789":"Cayden had \\(\\$84.\\) He spent \\(\\dfrac{3}{7}\\) of his money on a puzzle. How much money did he have left?","15809":"Melissa's monthly salary is thrice the amount she spent in June.<br>Her monthly salary is \\(\\$8424.\\)<br>How much did she spend in June? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","15810":"A chicken sandwich costs \\(\\$2.70\\) and a fruit juice costs \\(\\$1.55.\\) Harry had \\(\\$50.\\) He bought 1 chicken sandwich and a fruit juice. How much money had he left? [?]","15815":"A t-shirt, a bag and a cap cost \\(\\$256.\\) The bag costs \\(\\$24\\) more than the cap. The t-shirt costs the same as the total value of the bag and the cap. How much does the cap cost? [?]","15818":"The line graph shows the number of people who visited a museum in 6 years.<br>(a) What was the increase in the number of people visiting the museum from 2018 to 2019? (b) Each ticket to the museum cost \\(\\$8.\\)<br>How much did the museum collect from the sale of the tickets in 2014? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","15839":"At a fruit shop, apples were sold in bags of 6 only and not separately. Each bag of apples cost \\(\\$4.\\) Kelly has \\(\\$19.\\) What is the greatest number of apples that she can buy? [?]","15841":"3 apples and 1 honeydew cost \\(\\$7.17.\\) 2 apples and 1 honeydew cost \\(\\$6.27.\\) What is the total cost of 2 apples? [?]","15844":"Jill saves \\(\\$612.\\)<br>She saves six times as much as her brother, Tom.<br>How much must she give Tom so that both of them have an equal amount of money? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","15881":"Ahmad sold an equal number of apples and peaches. Each apple cost \\(\\$2\\) while each peach cost \\(\\$5.\\) He collected a total of \\(\\$756\\) from the sale of the fruits. (a) How many peaches were sold? (b) How much money was collected from the sales of apples?\n[?] , [?]","15883":"The table shows the entrance fees for the Colourful Flower Exhibition. Adult: Weekday \\(\\$13.90,\\) Weekend \\(\\$15.90.\\) Child (3 to 12 years old): Weekday \\(\\$6,\\) Weekend \\(\\$8.\\) (a) On Saturday, Mr Chandra and his four-year-old child visited the exhibition. How much did Mr Chandra pay for the entrance fees altogether? (b) On Wednesday, Ms Sim brought a group of Primary 4 students. They paid a total of \\(\\$241.90\\) to enter. How many students did Ms Sim bring?\n[?] , [?]","15927":"The line graph shows the number of parcels delivered by Terry in a week. Terry earns \\(\\$1\\) for each parcel delivered. For every 50 parcels delivered in a week, Terry earns an additional bonus of \\(\\$5.\\) How much did Terry earn in this week? [?]","15932":"4 files and 2 writing pads cost \\(\\$11.60.\\) 8 files and 6 writing pads cost \\(\\$26.\\) What is the cost of 1 writing pad? [?]","15993":"The bar graph shows the number of card games sold from Jan to Jun.\nThe price of a set of card game was \\(\\$48.\\)<br>How much money was collected from all the card games sold in May?","16016":"A baker baked 3 types of cakes. \\(\\dfrac{1}{3}\\) of the cakes were chocolate cakes, \\(\\dfrac{2}{9}\\) of them were blueberry cakes and the remaining were butter cakes.\n(a) What fraction of the cakes were butter cakes?\n(b) A total of 108 cakes were baked. Each cake was sold at \\(\\$15.\\) How much money was collected when \\(\\dfrac{1}{4}\\) of the cakes baked were sold?","16034":"Michael and Vincent saved a total of \\(\\$420.\\) After giving \\(\\$15\\) to Vincent, Michael had three times as much money as Vincent. How much more money did Michael have than Vincent at first?","16056":"Xiu Lan's weekly allowance was \\(\\$13.50\\) and De Ming's weekly allowance was \\(\\$24.\\) De Ming saved \\(\\$3.75\\) and spent the rest. Xiu Lan spent all her money. How much more money did De Ming spend than Xiu Lan?\nAns: \\(\\$\\) [?]","16066":"Tristal bought 28 identical ovens and a kettle.<br>Each oven cost 5 times as much as the kettle.<br>The kettle cost \\(\\$65.\\)<br>How much did she pay for all the ovens?","16074":"Jiayi had \\(\\$13.\\) She bought 2 different items and paid more than \\(\\$10\\) for them. The prices were: Calculator \\(\\$7.80,\\) Stapler \\(\\$2.10,\\) Comic Book \\(\\$6.65,\\) Plastic Folder \\(\\$0.85,\\) Notebook \\(\\$5.45.\\) Which were the 2 items she bought?","16096":"Michelle and Bridget went shopping with the same amount of money. After Michelle spent \\(\\$8.80\\) and Bridget spent \\(\\$50,\\) Michelle had 5 times as much money left as Bridget. (a) How much money did Michelle have in the end? (b) How much money did Bridget have at first?\n[?] , [?]","16099":"At a bakery, the price of a cupcake was \\(\\$2\\) and the price of a tart was \\(\\$5.\\) Ms Lim paid \\(\\$38\\) to buy a total of 13 cupcakes and tarts. How many more cupcakes than tarts did Ms Lim buy?\n[?]","16125":"3 cupcakes cost \\(\\$2.95.\\) How much do 12 cupcakes cost? \\(\\$\\)[?]","16131":"Mrs Goh bought a dress and 2 skirts for \\(\\$250.\\) The dress cost \\(\\$71.50\\) more than a skirt. How much was the cost of 1 skirt? \\(\\$\\)[?]","16133":"A pen cost \\(\\$1.20\\) and a ruler cost \\(\\$0.40.\\) Sue bought 6 pens and 5 rulers. How much more did she pay for the pens than the rulers? \\(\\$\\)[?]","16140":"Mrs Lim baked 300 fruit tarts. \\(\\dfrac{1}{2}\\) of them were pineapple tarts, \\(\\dfrac{2}{5}\\) of them were strawberry tarts and the remaining were mango tarts. How many mango tarts did she bake? [?] Mrs Lim sold the pineapple and strawberry tarts at 5 for \\(\\$9.\\) How much would Mrs Lim collect from her sale of all the pineapple and strawberry tarts? \\(\\$\\)[?]","16183":"Mrs Ong bought some fruits at a sale. Mangoes are sold in packs of 2 while apples are sold in packs of 3. Mangoes cost 2 for \\(\\$5.20\\) and apples cost 3 for \\(\\$4.\\) (a) She bought 10 mangoes. How much did she pay for the mangoes? (b) With the same amount of money that she paid for the mangoes, what is the greatest number of apples she can buy? [?] , [?]","16218":"The table shows part of the menu at a cafe.<br>Mr Gan bought a drink, 1 small fried rice and 1 medium spaghetti.<br>The total cost of all his items was \\(\\$5.30.\\)<br>What was the size (small, medium or large) of the drink he bought?","16375":"George had \\(\\$108\\) and Trevor had \\(\\$52.\\) After each of them bought a calculator at the same price, George had five times as much money left as Trevor. What was the cost of the calculator?\n[?]","16376":"The cost of an adult ticket to a funfair was \\(\\$8.\\) The cost of a child ticket was \\(\\$5.\\) On a Monday, there were 50 visitors and \\(\\$304\\) was collected altogether. How many more children than adults visited the funfair that day?\n[?]","16475":"Adventure Cove Waterpark<br>Entrance fees: Adult \\(\\$32.40\\); Child (12-year-old and below) \\(\\$21.60.\\)<br>Weekend Family Package: 2 adults \\(\\$60\\); First 2 children \\(\\$18.60\\) each; Additional child \\(\\$18\\) each.<br>Mr and Mrs Chan brought their children to the waterpark on Saturday. They paid \\(\\$115.20\\) in total using the Weekend Family Package. How many children did they bring to the waterpark?<br>[?]","16499":"Sam had 6 times as much money as Karl. Karl had \\(\\$128\\) less than Andy. Both Karl and Andy had a total of \\(\\$800.\\)<br>(a) How much money did Karl have?<br>(b) Sam then bought 8 identical lego sets with all his money. How much did each lego set cost?<br>[?] , [?]","16603":"A magazine costs \\(\\$5.90.\\) It is \\(\\$2.65\\) cheaper than a book. How much does the book cost?\n[?]","16605":"Mr Seah earned \\(\\$2745.\\) He spent $$\\frac{7}{9}$$ of his earnings and saved the rest. How much did Mr Seah save?\n[?]","16608":"Ahmad and Caili had an equal amount of money at first. After Ahmad had received \\(\\$30.50\\) from his mother and Caili had spent \\(\\$20,\\) he had three times as much money as Caili. How much money did each of them have at first?\n[?]","16610":"A cupcake cost \\(\\$4\\) and a muffin cost \\(\\$3.\\) Mrs Lee spent \\(\\$357\\) to buy an equal number of cupcakes and muffins. What was the total number of cupcakes and muffins Mrs Lee had bought?\n[?]","16707":"A fruit seller had 30 boxes of pineapples.<br>There were 24 pineapples in each box.<br>He sold all the pineapples at 6 for \\(\\$18.\\)<br>How much money did he receive?","16708":"Nancy and Peter bought a sofa.<br>The sofa cost \\(\\$1200.\\)<br>Nancy paid \\(\\dfrac{3}{8}\\) of the cost of the sofa.<br>How much more did Peter pay than Nancy?","16726":"Siti had the same number of \\(\\$2\\) and \\(\\$5\\) notes. She had a total of \\(\\$252.\\) How many \\(\\$2\\) notes did she have? [?]","16728":"A stall had a promotion: Buy 1 muffin for \\(\\$3\\) each. Buy 4 muffins at \\(\\$11.\\) Mandy bought 49 muffins. What was the least amount of money Mandy had to pay for the 49 muffins? [?]","16729":"James had \\(\\$16.40.\\) He wanted to buy 3 notebooks and 1 pencil case, but he was short of \\(\\$3.30.\\) (a) What was the total cost of the 3 notebooks and 1 pencil case? (b) The pencil case cost \\(\\$2.90\\) more than each notebook. What was the cost of 1 notebook? [?] [?]","16732":"Lydia had twice as much money as Kenneth at first.<br>Kenneth then gave Lydia \\(\\$24.\\)<br>In the end, Lydia had 4 times as much money as Kenneth.<br>How much money did Kenneth have at first? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","16814":"Julia bought a book for \\(\\$18.90\\) and a pencil box for \\(\\$7.50.\\) She gave the cashier \\(\\$50.\\) How much change did she get?","16823":"Aaron and Brandon had a total of \\(\\$567\\) at first. After Aaron gave Brandon \\(\\$33,\\) Aaron had twice as much money as Brandon. How much money did Brandon have at first?","16845":"Pears are sold only in packs of 3 while apples are sold only in packs of 5. 3 Pears for \\(\\$4.75.\\) 5 Apples for \\(\\$6.\\) Caleb had \\(\\$50.\\) What was the greatest number of apples he could buy?\n[?]","16902":"The line graph shows the amount of flour bought by a bakery for 5 days. All the flour bought by the bakery was sold in packets of 5 kg. Each packet of flour cost \\(\\$20.\\) How much more money did the bakery pay for the flour on Day 5 than Day 3?\n[?]","16905":"Ramli spent $$\\frac{1}{3}$$ of his monthly salary on a television. He spent $$\\frac{2}{9}$$ of his salary on food and saved the rest. Given that Ramli saved \\(\\$2392,\\) how much did Ramli spend on food?\n[?]","16907":"Patrick bought 4 cupcakes. He gave the cashier some money and received \\(\\$3.60\\) as change. Given that each cupcake cost \\(\\$2.85,\\) how much did he give the cashier?\n[?]","16910":"At first, Mary had \\(\\$166\\) and Larry had \\(\\$304.\\) Each of them bought 5 similar plates. Each of the plates they bought was of the same price. After buying the plates, Larry had 4 times as much money as Mary left.<br>(a) How much money did Mary have left after buying the 5 plates?<br>(b) What was the price of one plate?<br>[?] , [?]","16998":"At a bakery, muffins are sold at these prices: 1 for \\(\\$1.40,\\) 6 for \\(\\$5.70,\\) 10 for \\(\\$8.90.\\) Nareen wants to order 57 muffins for a birthday party. What is the least amount of money she will need to pay for the muffins?<br>[?]","17000":"John and Peter had a total of \\(\\$540.\\) After John gave Peter \\(\\$40,\\) he had five times as much money as Peter.<br>(a) How much money did Peter have in the end?<br>(b) How much money did John have at first?<br>(a) [?]<br>(b) [?]","17046":"Cynthia had two times as many \\(\\$2\\) notes as \\(\\$5\\) notes. The total amount of money that Cynthia had was \\(\\$243.\\) How many \\(\\$2\\) notes did Cynthia have?<br>[?]","17113":"At the school bookshop: Stapler \\(\\$5,\\) Scissors \\(\\$8,\\) Ruler \\(\\$3.\\) Bess spent a total of \\(\\$31\\) at the school book shop. She bought 3 identical [?] and 2 identical [?].","17119":"A television costs 10 times as much as a chair. 1 television and 1 table cost \\(\\$1820.\\) 1 table and 1 chair cost \\(\\$560.\\) What is the cost of 1 television and 2 tables?\n[?]","17151":"At first, Peter had twice as much savings as Michelle.<br>After Michelle received \\(\\$5499,\\) she had twice as much savings as Peter.<br>What is their total savings now? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","17171":"Mr Ling sold 8 sofas and some carpets for \\(\\$5928.\\) The sofa cost \\(\\$645\\) each. How much did the carpets cost?","17174":"Jerry bought 3 apples and 1 orange. The cost of 3 apples was \\(\\$5.25.\\) An apple cost \\(\\$0.60\\) less than an orange. What was the cost of an orange?","17202":"Mike bought 5 pens and 2 erasers. Kelly bought 2 pens and 5 erasers. Mike paid \\(\\$2.40\\) more than Kelly. An eraser cost \\(\\$0.95.\\)<br>(a) How much more does a pen cost than an eraser? [?]<br>(b) What was the cost of a pen? [?]","17255":"Jamie bought 8 boxes of biscuits. Each box of biscuits cost \\(\\$1.20.\\) She gave the cashier \\(\\$50.\\) How much change did Jamie receive?","17279":"A pair of trousers cost \\(\\$132.\\) It cost \\(\\$27\\) more than a shirt. Mr Lee bought a pair of trousers and 4 shirts.<br>(a) How much did a shirt cost?<br>(b) How much did Mr Lee pay for a pair of trousers and 4 shirts altogether?<br>(a) \\(\\$\\)[?]<br>(b) \\(\\$\\)[?]","17283":"Ahmad and Jack had the same amount of money at first. After Ahmad had spent \\(\\$37\\) and Jack had received \\(\\$15,\\) Jack had 3 times as much money as Ahmad in the end.<br>(a) How much more money did Jack have than Ahmad in the end?<br>(b) How much money did Jack have at first?<br>(a) \\(\\$\\)[?]<br>(b) \\(\\$\\)[?]","17284":"Tina saved some money from Monday to Friday. Each day, she saved \\(\\$1\\) more than the previous day. At the end of Wednesday, she saved a total of \\(\\$38.70.\\)<br>(a) How much money did Tina save on Wednesday?<br>(b) How much money did she save on Friday?<br>(a) \\(\\$\\)[?]<br>(b) \\(\\$\\)[?]","17370":"The line graph shows the number of soft toys sold at the Care Carnival from Monday to Friday. Each soft toy was sold at \\(\\$12.\\)<br>(a) Which day has the greatest number of soft toys sold?<br>(b) How much money was collected from the sales on that day?<br>[?] , [?]","17422":"Kenneth wanted to buy two shirts that cost \\(\\$25.65\\) each, but he was short of \\(\\$14.20.\\) How much money did Kenneth have?","17497":"If 1 chiffon cake costs \\(\\$12,\\) how much was collected from the sale of chiffon cakes on that day?","17517":"Ms Chai bought 3 blouses and 4 skirts for \\(\\$465.\\) Each skirt costs \\(\\$20\\) more than a blouse. What is the cost of 1 blouse? [?]","17518":"The table shows the mass of meat sold by a butcher in a day.<br>Beef 55.5 kg, Mutton ?, Chicken ?, Total 246 kg.<br>(a) If the butcher sold twice as much chicken as mutton, what is the mass of the chicken sold?<br>(b) If the cost of 1 kilogram of chicken is \\(\\$9,\\) what was the total amount collected from the sale of the chicken?<br>(a) <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/><br>(b) <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/>","17556":"Martha had \\(\\$36.\\) She had 5 times as much money as Rina. How much money did both of them have?<br>\\(\\$\\)[?]","17608":"Mei Yi spent \\(\\$14.90\\) on 4 erasers and 5 pencils. The total cost of 1 such eraser and 1 such pencil was \\(\\$3.25.\\)<br>(a) How much did 1 such pencil cost?<br>(b) Zachary bought 7 such pencils. He paid with a \\(\\$50\\) note. How much change did Zachary receive?<br>[?] , [?]","17639":"3 files and 3 pens cost \\(\\$32.10.\\) I paid \\(\\$40\\) for 4 such files and 3 such pens. Find the cost of 3 pens. [?]","17645":"A newly opened chicken stall had a promotion. For every chicken bought, the second chicken was sold at half price. Each chicken is \\(\\$4.70.\\) Mrs Dee bought 4 chickens.<br>(a) How much did she pay? [?]<br>(b) At the end of the day, the stall collected \\(\\$440.\\) There were two \\(\\$100\\) notes, three \\(\\$50\\) notes and some \\(\\$10\\) notes. How many \\(\\$10\\) notes were there? [?]","17648":"A group of 3 adults and 5 children bought tickets to watch a concert. Each adult ticket cost \\(\\$7\\) more than each child ticket. The group paid a total of \\(\\$125.\\) What was the cost of each adult ticket? [?]","17649":"A curry puff cost \\(\\$3\\) and a hotdog cost \\(\\$4.\\) Miss Gaya spent a total of \\(\\$238\\) on 70 curry puffs and hotdogs. How many hotdogs did she buy? [?]","17678":"Mr Tan bought 3 adult and 1 child air tickets for \\(\\$2800.\\) An adult ticket cost 2 times as much as a child ticket. How much did he pay for one adult ticket?<br>\\(\\$\\)[?]","17679":"Ahmad, John, and Tina share \\(\\$830.\\) Ahmad has twice as much money as Tina and he has \\(\\$40\\) more than John. How much money does Ahmad have?<br>\\(\\$\\)[?]","17690":"Mr Lim had 528 mangoes. He sold all the mangoes at 6 for \\(\\$14.\\) How much money did he receive?\n[?]","17834":"Mr Lim bought a shirt which cost \\(\\$23.80\\) and a pair of pants which cost \\(\\$49.70.\\) He gave the cashier \\(\\$100.\\) How much change did he receive?<br>\\(\\$\\)[?]","18027":"The cost of a dining table was \\(\\$735.\\) The dining table cost 5 times as much as a dining chair.<br>(a) How much did the dining chair cost?<br>(b) How much more did the dining table cost than the dining chair?<br>[?] , [?]","18092":"An adult ticket cost \\(\\$5\\) and a child ticket cost \\(\\$2.\\)<br>There were as many children as adults at the funfair.<br>The total amount of money collected from the admission tickets was \\(\\$9520.\\)<br>How many people were at the funfair altogether?","18100":"Shop A and Shop B sell the same watch. Shop A retail price is \\(\\$27.\\) Shop B retail price is \\(\\$36.\\)<br>(a) Which shop sells the watch for a lower price? (write A or B)<br>(b) Jacob bought some watches from Shop B. Andre spent the same amount of money as Jacob at Shop A. Andre bought 8 more watches than Jacob. How many watches did Jacob buy?<br>[?] , [?]","18142":"Mr Chen bought 6 similar dining chairs for \\(\\$1428.\\) A sofa cost 10 times as much as a dining chair. How much did the sofa cost?<br>\\(\\$\\)[?]","18353":"Raja wanted to buy a new piano which costs \\(\\$3483.\\) He had been saving for 9 months but he was still short of \\(\\$1647.\\) He saved an equal amount of money each month. How much did Raja save each month?","18366":"A fruit seller had 106 boxes of oranges. There were 24 oranges in each box. He sold all the oranges at 8 for \\(\\$5.\\) How many oranges did the fruit seller have altogether?\n[?]","18367":"A fruit seller had 106 boxes of oranges. There were 24 oranges in each box. He sold all the oranges at 8 for \\(\\$5.\\) How much money did he receive from the sale of all the oranges?\n[?]","18434":"Emir had \\(\\$6.40.\\) After giving \\(\\$1.20\\) to his brother, Emir had half the amount as his brother. What was the total amount they had altogether?<br>\\(\\$\\)[?]","18557":"The cost of a packet of sweets is twice the cost of a packet of peanuts.<br>The cost of 2 such packets of sweets and a packet of peanuts is \\(\\$18.50.\\)<br>(a) What is the cost of a packet of peanuts?<br>(b) John bought 2 such packets of peanuts and a packet of sweets.<br>How much did he pay?<br>(a) <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/><br>(b) <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/>","18757":"Three ovens and two printers cost \\(\\$2300.\\) A printer cost \\(\\$80\\) more than an oven. What is the cost of an oven?<br>\\(\\$\\)[?]","18758":"John had twice as much money as Ken. After John spent \\(\\$1064,\\) Ken had four times as much money as John.<br>(a) How much money did John have in the end?<br>\\(\\$\\)[?]<br>(b) How much money did the both of them have at first?<br>\\(\\$\\)[?]","18778":"A pen cost \\(\\$2.60.\\) Diana bought two pens and gave the cashier \\(\\$10.\\) How much change did she get?","18784":"A dress and five identical T-shirts cost \\(\\$132.50.\\) A dress and two of the identical T-shirts cost \\(\\$75.80.\\) What is the cost of one T-shirt?<br>\\(\\$\\)[?]","18785":"Museum of Ice Cream entrance fees: Adult \\(\\$28.90,\\) Child (12 years old and below) \\$? . Weekend Family Package: Two adults \\(\\$55,\\) First two children \\(\\$15.90\\) each, Additional child \\(\\$12\\) each.<br>(a) Mrs Lim brought her two children under the age of 12 to the Museum of Ice Cream on Wednesday. She paid \\(\\$61.90\\) in total. What is the entrance fee for a child under 12 years old?<br>\\(\\$\\)[?]<br>(b) Mr and Mrs Tan brought their three children under the age of 12 to the Museum of Ice Cream on Saturday. How much did they pay for the entrance tickets altogether?<br>\\(\\$\\)[?]","18874":"Nora paid \\(\\$164.20\\) for some pillows and 4 bolsters. The pillows cost \\(\\$76.80.\\) How much did each bolster cost?","18884":"Mr Lim and his son are travelling together.<br>Transportation Fees &mdash; Cost of Mode A: Adult Ticket \\(\\$12.50,\\) Child Ticket \\(\\$8.90.\\) Cost of Mode B: Adult Ticket \\(\\$16.80,\\) Child Ticket \\(\\$5.40.\\)<br>Which mode of transportation is cheaper and how much can Mr Lim save?<br>Cheaper mode: Mode [?], Amount saved: \\(\\$\\)[?]","18886":"8 apples and an orange cost \\(\\$8.60.\\) 4 apples and an orange cost \\(\\$5.\\) (a) Find the cost of an apple. (b) Find the cost of an orange.<br>(a) \\(\\$\\)[?], (b) \\(\\$\\)[?]","18926":"The prices of cupcakes sold by Delicious Bakery are listed. 1 cupcake costs \\(\\$5,\\) with an offer 'Buy 3 and Get 4th one free'. Mr Phua wants to buy 17 cupcakes. What is the least amount he has to pay for the cupcakes that are on offer? \\(\\$\\)[?]","18998":"A magazine cost \\(\\$4.\\) It cost \\(\\$1\\) less than a coin pouch. Cindy bought 3 such magazines and gave the cashier \\(\\$50.\\)<br>(a) How much did a coin pouch cost?<br>(b) What is the greatest number of coin pouches that she can buy with the remaining amount of money?<br>[?] , [?]","19002":"At a shop the price of a pen is \\(\\$2.\\) For every 4 pens bought, the shop gives away 1 pen free.<br>(a) Sarah bought 3 pens. How much did she pay for it?<br>(b) Rahmat spent \\(\\$36\\) buying pens. How many pens did he get altogether?<br>[?] , [?]","19046":"Rihana had \\(\\$105.\\) She used $$\\frac{1}{3}$$ of it on a watch and spent the rest of her money on a present. How much did the present cost?\n[?]","19101":"Gopal saved \\(\\$2.50\\) for every \\(\\$8\\) he had. If he had \\(\\$72,\\) how much did he save?","19102":"May and her 3 friends bought a cake that cost \\(\\$24.60.\\)<br>The cost was shared equally among May and her friends.<br>How much did each person pay for the cake?","19108":"Linda wanted to buy a notebook that cost \\(\\$3.90\\) and a pen that cost \\(\\$1.50.\\) After checking her wallet, she found that she was short of \\(\\$0.60.\\) How much money was in her wallet?\n[?]","19111":"In a bakery, a Muffin costs \\(\\$2.40\\) and a Pie costs \\(\\$3.60.\\) Mrs Toh bought an equal number of muffins and pies and paid \\(\\$54.\\) How much did Mrs Toh pay for the muffins?\n[?]","19112":"Bryan had some money. He spent $$\\frac{1}{2}$$ of his money on a watch, $$\\frac{1}{5}$$ of his money on two T-shirts and saved the rest. He saved \\(\\$60.\\) What fraction of his money did he save?","19113":"Bryan had some money. He spent $$\\frac{1}{2}$$ of his money on a watch, $$\\frac{1}{5}$$ of his money on two T-shirts and saved the rest. He saved \\(\\$60.\\) How much does each T-shirt cost?\n[?]","19297":"Shirley had a total of twenty-six \\(\\$5\\) notes and \\(\\$10\\) notes. The total value of the notes was \\(\\$180.\\) How many more \\(\\$5\\) notes than \\(\\$10\\) notes did she have?\n[?]","19364":"Nick bought 7 bars of chocolate. Each bar of chocolate cost \\(\\$2.40.\\) He paid for the chocolate with a \\(\\$50\\) note. How much change did Nick get?","19378":"Hazli bought a box of pencils that cost \\(\\$4.70.\\)<br>He paid using 7 fifty-cent coins and some twenty-cent coins.<br>How many twenty-cent coins did he use? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","19389":"Devi and Hassan went shopping with the same amount of money. After Devi spent \\(\\$180\\) and Hassan spent \\(\\$78,\\) Hassan had three times the amount of money left as Devi.<br>(a) How much more money did Devi spend than Hassan? [?]<br>(b) How much money did Devi go shopping with? [?]","19531":"Mrs Tan bought some meat for \\(\\$12.55\\) and a bottle of chilli sauce for \\(\\$3.70.\\) She gave the cashier \\(\\$20.\\) How much change did Mrs Tan receive?<br>\\(\\$\\)[?]","19538":"Alice, Bella and Clara have a total of \\(\\$1004.\\) Alice has twice as much money as Bella. Clara has \\(\\$190\\) less than Bella. How much money does Bella have?<br>\\(\\$\\)[?]","19719":"At a cinema, an adult ticket costs \\(\\$6\\) more than a child ticket. Mr Lim and his family bought 2 adult tickets and 4 child tickets for \\(\\$51.\\) How much does an adult ticket cost? \\(\\$\\)[?]","19813":"Andy and Ben had a total of \\(\\$698.\\) Andy and Carl had a total of \\(\\$510.\\) Ben had three times as much money as Carl. How much money did Andy have? [?]","19820":"Peter bought 3 shirts and 2 bags for \\(\\$289.\\) Each bag cost \\(\\$17\\) more than a shirt. How much did a bag cost? [?]","19863":"The table shows the prices of tickets for a concert.<br>Adult: Monday to Friday \\(\\$31.60,\\) Saturday and Sunday \\(\\$39.60.\\)<br>Child: Monday to Friday \\(\\$15.90,\\) Saturday and Sunday \\(\\$21.90.\\)<br>How much does a family of 2 adults and 3 children have to pay for the concert that will be held on a Saturday?","19877":"Joseph spent \\(\\$21.95.\\) He spent \\(\\$3.25\\) more than Muthu. How much did Joseph and Muthu spend altogether? \\(\\$\\)[?]","19880":"Two types of cardboard are sold at the prices shown. A small cardboard costs \\(\\$3\\) and a large cardboard costs \\(\\$5.\\) Meiling bought a total of 23 cardboards. She paid \\(\\$85\\) altogether. How many small cardboards did she buy? [?]","19881":"The table shows the number of pancakes and tarts sold in a cafe from Friday to Sunday.<br>Friday: pancakes 45, tarts 42. Saturday: pancakes 52, tarts 33. Sunday: pancakes 48, tarts 51.<br>(a) On which day were there more tarts sold than pancakes? [?]<br>(b) Each pancake was sold at \\(\\$3.\\) How much more money was collected from the sale of the pancakes on Saturday than on Friday? \\(\\$\\)[?]","20002":"Jamie bought 8 boxes of biscuits. Each box of biscuits cost \\(\\$1.20.\\) She gave the cashier \\(\\$50.\\) How much change did Jamie receive?","20026":"A pair of trousers cost \\(\\$132.\\) It cost \\(\\$27\\) more than a shirt. Mr Lee bought a pair of trousers and 4 shirts.<br>(a) How much did a shirt cost?<br>(b) How much did Mr Lee pay for a pair of trousers and 4 shirts altogether?<br>(a) \\(\\$\\)[?]<br>(b) \\(\\$\\)[?]","20030":"Ahmad and Jack had the same amount of money at first. After Ahmad had spent \\(\\$37\\) and Jack had received \\(\\$15,\\) Jack had 3 times as much money as Ahmad in the end.<br>(a) How much more money did Jack have than Ahmad in the end?<br>(b) How much money did Jack have at first?<br>(a) \\(\\$\\)[?]<br>(b) \\(\\$\\)[?]","20031":"Tina saved some money from Monday to Friday. Each day, she saved \\(\\$1\\) more than the previous day. At the end of Wednesday, she saved a total of \\(\\$38.70.\\)<br>(a) How much money did Tina save on Wednesday?<br>(b) How much money did she save on Friday?<br>(a) \\(\\$\\)[?]<br>(b) \\(\\$\\)[?]","20957":"Funfair tickets: Adult ticket \\(\\$36,\\) Child ticket \\(\\$18.\\) Special promotion: 2 adult tickets and 1 child ticket \\(\\$80.\\) 5 adults and 4 children went to the funfair. What would be the least possible amount of money they need to pay for the tickets?","20969":"The total cost of a handbag and purse is \\(\\$242.\\) The handbag costs \\(\\$20\\) more than the purse. Find the cost of the handbag. [?]","21010":"The table shows the monthly allowance of 2 children.<br>The total monthly savings of the 2 children was \\(\\$140.\\) What was Dan's monthly spending?<br>\\(\\$\\)[?]","21020":"There were 180 flowers at a florist. $$\\frac{2}{3}$$ of them were roses, $$\\frac{2}{9}$$ of them were sunflowers and the remaining were daisies.<br>a) What fraction of the flowers were daisies?<br>b) The daisies were sold at 5 for \\(\\$21.\\) How much was collected from the sale of all the daisies?<br>(a) <br>(b) \\$","21051":"The table shows the cost of flight tickets to three cities, Sydney, London and New York. London \\(\\$1100,\\) New York \\(\\$1620.\\)<br>The total cost of tickets to New York and London is 4 times the cost of ticket to Sydney. What is the cost of ticket to Sydney?<br>\\(\\$\\)[?]","21053":"A grocery store has a special offer for potato chips. One packet costs \\(\\$1.90.\\) Offer: 3 packets for \\(\\$5.40.\\)<br>Bryan wants to buy 14 packets of potato chips. What is the least amount of money he has to pay?<br>\\(\\$\\)[?]","21056":"Mrs Choo bought a peach, 2 pears and 6 apples for \\(\\$8.70.\\) The cost of 1 pear and 3 apples was \\(\\$2.60.\\) What was the cost of the peach?<br>\\(\\$\\)[?]","21123":"Save more when you buy more! 1 cupcake for \\(\\$4.\\) 3 cupcakes for \\(\\$10.\\)<br>Mrs Lim wants to buy 35 cupcakes. What is the least amount of money she must pay for them?<br>[?]","21126":"Mr and Mrs Tan took their children to watch a circus show on a Sunday. They bought 5 tickets in total. They had 3 children whose ages were 8, 13 and 14.<br>Circus Show Ticket Prices \u2014 Adult: Mon\u2013Fri \\(\\$33.50,\\) Sat\u2013Sun \\(\\$38.50.\\) Children (12 years and below): Mon\u2013Fri \\(\\$16,\\) Sat\u2013Sun \\(\\$22.\\)<br>How much did the 5 tickets cost altogether?<br>[?]","21130":"The cost of 6 identical laptops is \\(\\$7692.\\) Find the cost of 5 such laptops.\n[?]","21136":"A bookshop sells pencils in packs of 4 and erasers in packs of 6. 4 pencils for \\(\\$3.\\) 6 erasers for \\(\\$5.\\)<br>(a) Henry bought an equal number of pencils and erasers. What is the least number of pencils he could have bought?<br>(b) Liling used all her money to buy 44 pencils. Using the same amount of money, what is the greatest number of erasers she could buy?<br>[?] , [?]","21137":"Keith and Sam had the same amount of money. Keith bought 6 egg tarts and had \\(\\$1.90\\) left. Sam wanted to buy 10 egg tarts but was short of \\(\\$5.50.\\)<br>(a) What was the cost of 1 egg tart?<br>(b) How much money did Sam have?<br>[?] , [?]","21269":"Mrs Tan had \\(\\$188.70.\\) She spent \\(\\$39.90\\) on a blouse. She gave the rest of the money equally to her 3 children. How much did each child receive? [?]","21333":"2 similar spoons and 2 similar mugs cost \\(\\$27.\\) Each mug costs two times as much as each spoon. How much will 3 such spoons cost?<br>Ans: \\(\\$\\)[?]","21343":"Mary had \\(\\$5.20\\) less than Susan. After Susan's father gave Susan \\(\\$10,\\) Susan had 5 times as much money as Mary.<br>(a) How much money did Mary have?<br>(b) What was the total amount of money both girls had at first?<br>(a) \\(\\$\\)[?]<br>(b) \\(\\$\\)[?]","21384":"The cost of 3 identical ties and 2 identical belts cost \\(\\$168.50.\\) Each belt cost \\(\\$21.50\\) more than a tie. How much did each belt cost?\n[?]","21474":"Mr Tan bought the food items as shown. He paid the cashier \\(\\$50.\\)<br>How much change did he receive?<br>Pizza \\(\\$13.50,\\) Pasta \\(\\$9.85,\\) Garlic bread \\(\\$2.40\\)<br>[?]","21478":"The line graph shows the number of visitors to the zoo from Wednesday to Sunday.<br>Each ticket to the zoo cost \\(\\$8.\\) How much more money was collected from the ticket sales on Wednesday than on Friday?<br>[?]","21482":"Buy 1 eraser for \\(\\$1.\\) Buy 6 erasers for \\(\\$4.\\)<br>Sam wants to buy 206 erasers.<br>What is the least amount of money he will need?<br>[?]","21489":"Uncle Jubilee Theme Park Entrance Fees. Single Ticket: Adult \\(\\$12.80,\\) Child \\(\\$8.\\) Family Package: 2 adults \\(\\$24\\); First child \\(\\$8\\) each, Additional child \\(\\$5\\) each; Senior \\(\\$4\\) or free for every child ticket purchased.<br>(a) Mr Ali, his wife, his 2 elderly parents and 3 children went to the theme park. What was the least amount Mr Ali paid altogether?<br>(b) Miss Gopal took a group of students to the theme park. The total amount she paid to enter the theme park was \\(\\$60.80.\\) How many students did Miss Gopal take to the theme park?<br>[?] , [?]","21739":"Ali, Bala and Cathy had a total of \\(\\$1500.\\) Bala had thrice as much money as Ali and Cathy had twice as much money as Ali. How much money did Bala and Cathy have altogether?\n[?]","21740":"The graph shows the number of visitors at a carnival from Monday to Sunday. The number of visitors on Sunday was missing in the graph. The admission ticket for each visitor was \\(\\$8.\\)<br>(a) How much money was collected from the sale of admission tickets on Thursday?<br>(b) \\(\\$4000\\) more was collected on Sunday than on Wednesday. How many visitors visited the Carnival on Sunday?<br>[?] , [?]","21744":"A television costs \\(\\$789.\\) How much would 3 such television cost?\n[?]","21749":"Cupcakes are sold in boxes of 3. Each box of cupcake cost \\(\\$8.\\) What is the greatest number of cupcakes that can be bought with \\(\\$150\\)?\n[?]","21920":"Jenny has \\(\\$7500.\\) James has \\(\\$6850.\\) How much must Jenny give to James so that both of them have the same amount of money?\n[?]","22302":"A school bag costs \\(\\$60\\) more than a water bottle. 3 similar school bags and 2 similar water bottles cost \\(\\$280.\\) How much does each water bottle cost?\n[?]","22303":"Tammy has 35 \\(\\$2\\) and \\(\\$5\\) notes. The total value of the notes is \\(\\$118.\\) How many \\(\\$5\\) notes does she have?\n[?]","22534":"Nicholas donated some of his savings to charity. He donated $$\\frac{3}{8}$$ of it to Charity A and $$\\frac{1}{4}$$ of it to Charity B. He then donated the rest of his savings equally among 4 other charities. If each of these 4 charities received \\(\\$60,\\) how much money did he donate to all 6 charities?\n[?]","22641":"Mr Tan bought 5 chairs and 9 tables for his office. Each chair costs \\(\\$354.\\) He paid a total of \\(\\$5874.\\) How much did he pay in total for the tables?\n[?]","22669":"Megan receives a total of \\(\\$30\\) of pocket money for 5 days. Each day, she spends \\(\\$2.70\\) on transport, part of the remaining money on food and saves the rest.<br>(a) How much does Megan spend on transport in 5 days?<br>(b) Last week, Megan saved \\(\\$1.80.\\) How much did she spend on food?<br>[?] , [?]","22744":"The cost of one muffin is \\(\\$1.85.\\) How much money was collected on Wednesday?\n[?]","22750":"A bookshop sold any 3 items for \\(\\$5.\\) To celebrate SG60, the bookshop gave away 1 free item for every 3 items bought.<br>(a) Anne shopped at the bookshop and left with a total of 72 items in her bag. How many free items did she get?<br>(b) Bala had \\(\\$145,\\) how many items will he bring home in total?<br>(a) [?]<br>(b) [?]","22751":"A pen and a highlighter cost \\(\\$4.20.\\) 3 pens and 5 highlighters cost \\(\\$17.40.\\) Find the cost of a highlighter.\n[?]","22793":"In a shop, balloons are sold only in packets of 5 and 7. A packet of 5 heart-shaped balloons cost \\(\\$3.20\\) and a packet of 7 round-shaped balloons cost \\(\\$2.50.\\)<br>(a) Meagan bought 15 heart-shaped balloons. How much did she pay for the balloons?<br>\\(\\$\\)[?]<br>(b) David wants to buy 10 heart-shaped balloons and 22 round-shaped balloons. What is the least amount of money he need to pay for the balloons?<br>\\(\\$\\)[?]","22819":"Mrs Toh had \\(\\$33.60.\\) After paying \\(\\$7.80\\) for a packet of chocolate chip cookies, she had just enough money to buy 4 packets of butter cookies. How much did a packet of butter cookies cost?<br>\\(\\$\\) [?]","22835":"Cheryl had \\(\\$1253\\) and Fiona had \\(\\$845.\\) After each of them bought a bag at the same price, Cheryl had 5 times as much money as Fiona.<br>(a) How much more money does Cheryl have than Fiona at first?<br>(b) What was the cost of the bag?<br>[?] , [?]","22865":"The table shows the amount of money Mr Tan spent in the month of June. The amount of money spent on leisure is not shown. Food \\(\\$680\\) , Leisure ? , Transport \\(\\$240.\\) Mr Tan spent \\(\\$300\\) more on food than on leisure. What was his total spending?<br>$$$$[?]","22870":"Jun Hao has \\(\\$50.\\) He has \\(\\$16\\) less than Sue. Li Ann has 3 times as much money as Sue. How much money do they have in all?<br>$$$$[?]","22873":"2 sandwiches and 2 drinks cost \\(\\$9.30.\\) 3 sandwiches and 1 drink cost \\(\\$10.15.\\) What is the cost of 1 sandwich?<br>$$$$[?]","22913":"4 identical shirts and 3 identical bags cost \\(\\$150.60.\\) 2 such shirts and 1 such bag cost \\(\\$62.80.\\) Find the cost of 4 such shirts.<br>\\(\\$\\)[?]","22916":"Jayden and Linda bought some apples. Jayden took $$\\frac{5}{8}$$ of the apples and Linda took the rest. Jayden took 36 more apples than Linda. (a) How many apples did Linda take? (b) The cost of 6 apples was \\(\\$4.\\) How much did the basket of apples cost?<br>(a) [?]<br>(b) \\(\\$\\)[?]","22930":"Janet's weekly allowance was \\(\\$40.\\)<br>How much had she left at the end of the week?","22956":"Jane bought six identical bowls and five identical plates for \\(\\$46.90.\\) Mary bought three such bowls and three such plates for \\(\\$25.20.\\) How much did one plate cost?<br>$$$$[?]","22970":"The table shows the amount of money earned by 5 shops last week.<br>Shop A: \\(\\$900,\\) Shop B: \\(\\$650,\\) Shop C: \\(\\$1000,\\) Shop D: \\(\\$800,\\) Shop E: \\(\\$650.\\)<br>Which of the following bar graphs best represents the data shown in the table?","22974":"The table shows the prices of highlighters and pens sold in a shop in June and July.<br>Highlighter: June \\(\\$3.50,\\) July \\(\\$2.80.\\) Pen: June \\(\\$2.60,\\) July \\(\\$1.70.\\)<br>Meiling bought 6 highlighters and 4 pens in June. Nancy bought 6 highlighters and 4 pens in July. How much more money did Meiling spend than Nancy?","22997":"There were 3 bottles of oil.<br>All 3 bottles had the same amount of oil at first.<br>\\(\\dfrac{1}{8}\\) \\(l\\) of oil was poured from bottle A to bottle B.<br>\\(\\dfrac{1}{2}\\) \\(l\\) was then poured from bottle B to bottle C.<br>There was \\(\\dfrac{5}{8}\\) \\(l\\) of oil in bottle B in the end.<br>(a) What was the total amount of oil in bottles A, B and C at first?<br>(b) Each litre of oil cost \\(\\$7.80.\\)<br>Find the cost of the total amount of oil in bottles A, B and C.<br>(a) <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/><br>(b) <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/>","23044":"Cookies are sold in packets of 6. Each packet of cookies costs \\(\\$5.\\) Mdm Rani bought a total of 72 cookies altogether. How much did she pay?<br>\\(\\$\\)[?]","23048":"At first, Dan had the same amount of money as Evan. After Dan spent \\(\\$480,\\) Evan had three times as much money as Dan.<br>a) How much did Dan have in the end?<br>\\(\\$\\)[?]<br>b) How much did Dan have at first?<br>\\(\\$\\)[?]","23062":"Sarah sold a total of 20 bowls and plates for \\(\\$86.\\) Each bowl was sold at \\(\\$5\\) and each plate was sold at \\(\\$3.\\) How many bowls did Sarah sell? [?]","23064":"Siti spent a total of \\(\\$1400\\) on a bookshelf, a table and a chair. The bookshelf cost \\(\\$630.\\) The table cost \\(\\$500\\) more than the chair.<br>(a) How much did she spend on the table and the chair altogether?<br>(b) How much did she spend on the chair? [?] [?]","23102":"The following line graph shows the number of soft toys sold at the Care Carnival. Each soft toy was sold at \\(\\$12.\\)<br>(a) Which day has the greatest number of soft toys sold?<br>(b) How much money was collected from the sales on that day?<br>[?] , [?]","23151":"Mdm Tan had \\(\\$7360.\\) She saved \\(\\$4825\\) and divided the rest equally among her 3 children. How much did each child receive? \\(\\$\\)[?]","23152":"Sally bought 18 donuts at 3 for \\(\\$3.95.\\) How much did she pay for the donuts? \\(\\$\\)[?]","23153":"Raju had \\(\\$50.\\) A bar of chocolate cost \\(\\$5.50.\\) At a sale (Buy 2 Get 1 Free), Raju took home 6 bars of chocolate. How much change did he receive? \\(\\$\\)[?]","23157":"Cupcakes are sold in boxes of 3, 6 or 10. Box of 3: \\$?, Box of 6: \\(\\$15,\\) Box of 10: \\(\\$24.\\)<br>(a) Judy bought 26 cupcakes. What was the least number of boxes Judy bought? [?]<br>(b) Fariz also bought 26 cupcakes but paid \\(\\$3\\) more than Judy. His cupcakes were packed into 4 boxes. What was the price of a box of 3 cupcakes? \\(\\$\\)[?]","23158":"Jane receives the same amount of pocket money every month from January to April. The bar graph shows the amount spent: Jan \\(\\$34,\\) Feb \\(\\$28,\\) Mar \\(\\$48,\\) Apr \\(\\$40.\\) The pie chart shows Jane's spending and savings for Jan to Apr (savings is a quarter \/ right angle shown). (a) What is the amount of pocket money Jane received for the months of Jan to Apr? \\(\\$\\)[?] (b) Jane spent the same amount in May and April. Express the pocket money Jane saved from Jan to May as a fraction of the pocket money she received from Jan to May. Write your answer in the simplest form. [?]","23190":"The pie chart shows the amounts of donations collected by four classes. All four classes collected a total of \\(\\$480.\\) What was the amount collected by class 6D?<br>\\(\\$\\)[?]","23191":"Mr Lim has \\(\\$3080.\\) He has 7 times as much money as Mr Ng. How much money does Mr Ng have?<br>\\(\\$\\)[?]","23193":"Mrs Tay bought a dress and 2 skirts for \\(\\$250.\\) The dress cost \\(\\$65.50\\) more than a skirt. What was the cost of 1 skirt?<br>\\(\\$\\)[?]","23242":"Mei Yi spent \\(\\$14.90\\) on 4 erasers and 5 pencils. The total cost of 1 such eraser and 1 such pencil was \\(\\$3.25.\\)<br>(a) How much did 1 such pencil cost? [?]<br>(b) Zachary bought 7 such pencils. He paid with a \\(\\$50\\) note. How much change did Zachary receive? [?]","23270":"Bobby had \\(\\$54.\\)<br>He spent \\(\\dfrac{1}{6}\\) of it on some books.<br>How much money did he have left? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","23273":"Tom bought 4 erasers and 3 pencils from the bookshop for \\(\\$6.10.\\) Jane bought 7 erasers and 3 pencils for \\(\\$7.30.\\) What is the price of 1 pencil? [?]","23274":"A shop sells doughnuts: 1 doughnut for \\(\\$2\\); buy 5 doughnuts and get 1 free. Mrs Ho has \\(\\$14.\\) What is the greatest number of doughnuts she can get? [?]","23281":"Mdm Nura baked 4 apple tarts, 8 blueberry tarts and 11 chocolate tarts. Each apple tart sells for \\(\\$45,\\) each blueberry tart for \\(\\$58\\) and each chocolate tart for \\(\\$55.\\) Mdm Nura sold all the apple and blueberry tarts which she had baked. How much did she receive from the sale of all the apple and blueberry tarts? [?]","23287":"At a mall, a watch cost 6 times as much as a bag, and the bag cost \\(\\$91.25\\) less than the watch. Mrs Tan bought a watch and 3 bags for \\(\\$164.25.\\) Mrs Tan paid the cashier with two \\(\\$100\\) notes. How much change did she get? [?]","23344":"Jenny bought 2 tables and 3 chairs. Each table cost twice as much as a chair. Jenny spent a total of \\(\\$378.\\)<br>(a) Find the cost of a chair. $$\\$$[?]<br>(b) Find the cost of the 2 tables. $$\\$$[?]","23360":"The line graph shows the amount of petrol sold in a petrol station from 12 00 to 17 00.<br>(a) What was the amount of petrol in the petrol station at the start?<br>[?] litres<br>(b) At which 1-hour period was the most amount of petrol sold?<br>[?] to [?]<br>(c) Mr Tan sold 3 litres of petrol for \\(\\$2.\\) How much did he earn from selling the petrol at 13 00?<br>\\(\\$\\)[?]","23365":"Sarah and Tom had the same amount of money.<br>After Sarah spent \\(\\$336,\\) Tom had 7 times as much money as Sarah in the end.<br>How much money did Sarah have left?","23375":"A chair costs \\(\\$280\\) lesser than a bed. A bed and 4 identical chairs cost \\(\\$880.\\) How much does each chair cost? [?]","23444":"Aisyah sold some cupcakes at a carnival. For every 30 cupcakes sold, she would donate \\(\\$5\\) to a charity. In the end, Aisyah donated \\(\\$80\\) to the charity.<br>(a) How many cupcakes did Aisyah sell?<br>(b) Aisyah sold each cupcake for \\(\\$3.\\) After donating \\(\\$80,\\) how much did she earn from the sale?<br>[?] , [?]","23462":"Lucy had \\(\\$954.\\) She spent $$\\frac{5}{9}$$ of her money to buy a pair of shoes. How much had she left after buying the pair of shoes?\n[?]","23472":"A shop sells bottled drinks at \\(\\$2.50\\) each. Now, the shop is having a special offer for the bottled drinks: 2 bottles for \\(\\$4.60.\\) Mrs Ho needs to buy 7 bottles of drinks. What is the least amount of money she needs to pay?","23492":"Rihana had \\(\\$105.\\) She used $$\\frac{1}{3}$$ of it on a watch and spent the rest of her money on a present. How much did the present cost?\n[?]","23505":"Leonard had \\(\\$120.\\) He spent $$\\frac{5}{8}$$ of his money and saved the rest. How much did Leonard save? \\(\\$\\)[?]","23538":"Adam bought 28 boxes of balloons from a party store. Each box contained 36 balloons and costs \\(\\$18.\\) He paid the cashier some money and received \\(\\$46\\) change.<br>(a) How many balloons did he buy?<br>(b) How much money did he give to the cashier?<br>[?] , [?]","23540":"Rosie bought a table and 5 similar chairs at \\(\\$2885.\\) The table cost \\(\\$245\\) more than a chair. How much did the table cost?\n[?]","23559":"Mrs Tan bought a blouse and a dress. The blouse cost \\(\\$22.30.\\) The dress cost 4 times as much as the blouse.<br>(a) What was the cost of the dress? \\(\\$\\) [?]<br>(b) How much more did Mrs Tan pay for the dress than the blouse? \\(\\$\\) [?]","23574":"Mr. Lee sells 4 similar laptops and 1 printer for \\(\\$5775.\\)<br>1 printer is sold at \\(\\$1000\\) less than 1 laptop.<br>What is the price of a printer? \\(\\$\\)[?]","23620":"A washing machine cost \\(\\$678.\\) What is the total cost of 6 such washing machines?<br>Ans: \\(\\$\\)[?]","23623":"A table, a chair and a stool cost \\(\\$198.\\) The table costs 3 times as much as the chair. The stool costs \\(\\$17\\) less than the chair. How much is the stool?<br>Ans: \\(\\$\\)[?]","23635":"At a bakery, the price of a bun is \\(\\$0.80.\\)<br>For every 2 buns bought, the bakery gave another 1 bun for free.<br>(a) How much would 3 buns cost? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/><br>(b) Gareth needs 27 buns.<br>What is the least amount of money he needs to pay? <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/>","23640":"A bag of cookies cost \\(\\$5.60.\\) Jenny bought 6 bags and gave the cashier \\(\\$50.\\) How much change did she get?","23645":"Mr Tan had \\(\\$65\\) more than Mr Lim. After Mr Tan spent \\(\\$80.60,\\) Mr Lim had twice as much money as Mr Tan had left. How much money did Mr Tan have at first?<br>Ans: \\(\\$\\)[?]","23659":"Bala has 3 times as much money as Mei Ling.<br>If Bala has \\(\\$792,\\) how much money do they have altogether?","23665":"Hina had \\(\\$72.\\) She spent \\(\\dfrac{1}{4}\\) of her money on a bag. How much money had she left after buying the bag?\n[?]","23668":"A sofa costs \\(\\$2286.\\) The total cost of 6 chairs is \\(\\$450\\) more than the sofa. How much does each chair cost?\n[?]","23679":"A table cost \\(\\$120\\) more than a chair.<br>1 table and 3 chairs cost \\(\\$880.\\)<br>How much does a chair cost?","23688":"A sofa set costs \\(\\$2342.\\)<br>A table costs \\(\\$897\\) less than the sofa.<br>What is the total cost of the two items rounded to the nearest thousand? [?]","23692":"There were 185 boxes of oranges.<br>Each box had 24 oranges.<br>A fruit seller wanted to sell 8 oranges for \\(\\$12.\\)<br>How much money will the fruit seller make if he sold all the oranges? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","23717":"The graph shows the cost of potatoes of different masses.<br>(a) Mrs Tan bought 6 kg of potatoes. She paid the cashier \\(\\$50.\\) How much change did she receive? \\(\\$\\)[?]<br>(b) Mr Lim bought 8 kg of potatoes. Mr Song bought 10 kg of potatoes. How much more money did Mr Song spend than Mr Lim? \\(\\$\\)[?]","23741":"XYZ Bank offered an interest rate of 3% per year. Andrea set up a new account with XYZ Bank and deposited \\(\\$5200.\\) How much money would Andrea have in the bank at the end of 1 year?<br>Ans: \\(\\$\\)[?]","23747":"The table shows the postage rates for mailing to Malaysia.<br>Mass step not over 4 kg: \\(\\$3\\) per kg.<br>Per additional step of 500 g or part thereof: \\(\\$2.\\)<br>Dhamiri paid \\(\\$18\\) to send a parcel to his friend in Malaysia. What was the smallest possible mass of the parcel sent by Dhamiri? Give your answer in grams.<br>Ans: [?] g","23750":"The table shows the fare rates of a taxi service.<br>First 1 km or less: \\(\\$4.20.\\)<br>Every 500 m thereafter or less up to 10 km: \\(\\$0.50.\\)<br>Every 500 m thereafter or less after 10 km: \\(\\$0.30.\\)<br>Zaiyn boarded a taxi from Newton to Seletar. The total distance travelled was 14 km. How much was Zaiyn's taxi fare?<br>Ans: \\(\\$\\)[?]","23759":"In July, Raees, Leon and James saved a total of \\(\\$1200.\\) In August, Raees doubled his savings, Leon decreased his savings by \\(\\$160\\) and James increased his savings by \\(\\$110.\\) Their savings were the same in August. What was Raees' savings in August?<br>Ans: \\(\\$\\)[?]","23763":"The graph shows the number of magazines sold each month by a new publishing company from January to June. A total of 3360 magazines were sold from January to June. Each magazine was sold at \\(\\$9.50.\\) What was the average amount the company collected from selling the magazines from January to June?<br>Ans: \\(\\$\\)[?]","23790":"Mr Muthu bought 1 plush toy at 1 for \\(\\$20.\\) He had to pay 7% GST. How much did Mr Muthu pay for the plush toy inclusive of GST?<br>Ans: \\(\\$\\)[?]","23821":"Marcus bought some books and files for a total of \\(\\$192.\\) 2 books and 1 file cost \\(\\$11.20.\\) Each book cost 3 times as much as a file. He bought 8 more books than files. What is the cost of 1 file?<br>Ans: \\(\\$\\)[?]","23822":"Marcus bought some books and files for a total of \\(\\$192.\\) Each book cost \\(\\$4.80\\) and each file cost \\(\\$1.60.\\) He bought 8 more books than files. How many files did Marcus buy?<br>Ans: [?]","23849":"The rental rates for a bicycle at a shop are as shown: First 2 hours \\(\\$20.00\\); every additional \\(\\dfrac{1}{2}\\) hour or less \\(\\$4.50.\\) Dennis rented a bicycle at 8.15 a.m. and returned it at 12.00 noon on the same day. How much would he need to pay for the bicycle rental? [?]","23858":"The usual price of an oven was \\(\\$170\\) and the usual price of a toaster was \\(\\$50.\\) During a sale, all items were sold at 30% discount.<br>(a) Mrs Lim bought an oven at the sale. How much was the discount?<br>(b) Mr Ravi bought a toaster during the sale. How much did he pay for the toaster? [?] [?]","23859":"Adrian and Bert had a total of \\(\\$4563.\\)<br>After Adrian spent \\(\\dfrac{1}{4}\\) of his money and Bert spent \\(\\dfrac{2}{3}\\) of his money, they had an equal amount of money left.<br>How much money was Bert left with? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","23862":"Roy bought garlic bread, mashed potatoes and pizzas for a party. The ratio of the number of garlic bread to the number of mashed potatoes to the number of pizzas bought was 2 : 7 : 3. The cost of each garlic bread, mashed potato and pizza was \\(\\$2.50,\\) \\(\\$3\\) and \\(\\$10.50\\) respectively. He paid \\(\\$690\\) for all the food items.<br>(a) What fraction of the food bought was mashed potatoes?","23863":"Roy bought garlic bread, mashed potatoes and pizzas for a party. The ratio of the number of garlic bread to the number of mashed potatoes to the number of pizzas bought was 2 : 7 : 3. The cost of each garlic bread, mashed potato and pizza was \\(\\$2.50,\\) \\(\\$3\\) and \\(\\$10.50\\) respectively. He paid \\(\\$690\\) for all the food items.<br>How many pizzas did Roy buy? [?]","23894":"A restaurant is having a promotion. The regular price for each dinner set is \\(\\$30.\\) For every 9 dinner sets purchased, the tenth dinner set will be free. How much does it cost to purchase 52 such dinner sets? Ans: \\(\\$\\)[?]","23896":"The usual price of a cabinet was \\(\\$200.\\) During a sale, there was a 16% discount on the cabinet. As a member, Tosh was given an additional discount of \\(\\$2.80.\\) How much did Tosh save altogether? Ans: \\(\\$\\)[?]","23898":"Devi and Annabel had \\(\\$98\\) each. Annabel bought some similar notebooks and had \\(\\$17\\) left. Devi wanted to buy 40 such notebooks but would need another \\(\\$22.\\) How many notebooks did Annabel buy? [?]","23900":"Aaron bought a bicycle which included a GST of 7%. The price of the bicycle before GST was \\(\\$250.\\) How much did he pay for the bicycle? Ans: \\(\\$\\)[?]","23905":"The table shows the rate for printing postcards at a shop. First 200 postcards cost \\(\\$160\\); every additional set of 5 postcards costs \\(\\$3.\\) Lynette printed 700 postcards. How much did she pay? Ans: \\(\\$\\)[?]","23920":"A toy shop was having a sale.<br>The original price of 8 identical toy cars was \\(\\$120.\\)<br>How much would each toy car cost after a discount of 20%?","23930":"Mrs Tan bought apples from the supermarket. 5 apples for \\(\\$3.45.\\) How much would she pay for 30 apples? \\(\\$\\)[?]","23940":"Siti bought 3 chicken wings and 2 curry puff at \\(\\$9.90.\\) Judy bought 1 chicken wing and 1 curry puff at \\(\\$3.90.\\) What is the price of 1 chicken wing? \\(\\$\\)[?]","23992":"For every \\(\\$4\\) that Jimmy saved, his father gave him another \\(\\$2.50.\\) How much would Jimmy's father have given him when he had a total of \\(\\$157\\)? \\(\\$\\)[?]","24002":"The table shows the cost of cable car tickets.<br>Adult: Weekdays \\(\\$28,\\) Weekends & Public Holidays \\(\\$32.\\)<br>Child (12 years old and below): Weekdays \\(\\$20,\\) Weekends & Public Holidays \\(\\$24.\\)<br>(a) Mr Tan took a cable car ride with his wife and 2 children last Saturday. His children are 10 years old and 14 years old. How much did Mr Tan pay for the tickets altogether? \\(\\$\\)[?]<br>(b) \\(\\$2520\\) was collected from the sale of 104 tickets on Tuesday. How many child tickets were sold on that Tuesday? [?]","24005":"The table shows the favourite ice-cream flavours of some students.<br>Cookies and Cream 25%, Chocolate 40%, Vanilla 20%, Strawberry 15%.<br>CHILDREN'S DAY PROMOTION: 1 tub \\(\\$12.50.\\) Buy 5 tubs, get 1 tub free! (Price does not include 7% GST)<br>Ms Ong wants to buy 13 tubs of ice-cream for her class. Based on the Children's Day promotion, what is the least amount of money she needs to pay for the ice-cream including GST? Round your answer to the nearest dollar. \\(\\$\\)[?]","24013":"Bala receives a weekly allowance of \\(\\$60.\\) He saves \\(\\$12\\) each week. What percentage of Bala's allowance did he spend?","24020":"Aini bought a blouse at \\(\\$24\\) and a skirt that cost twice as much. The amount of money she had left was \\(\\$50\\) when rounded to the nearest \\(\\$10.\\) What was the possible amount of money she had at first?","24036":"Joseph spent $\\dfrac{1}{4}$ of his money on a pair of shoes and $\\dfrac{1}{2}$ of the remainder on a basketball. He was left with \\(\\$84.\\) How much did he spend on the two items? [?]","24048":"The bar graph shows the different coloured shirts sold by a shop in a day. Red 20, Blue 30, Yellow 10, White 42, Black 60. The price of each colour is: Red \\(\\$10,\\) Blue \\(\\$10,\\) Yellow \\(\\$10,\\) White \\(\\$5,\\) Black \\(\\$6.\\)<br>(b) How much did the shop collect from the sale of all the shirts? [?]","24056":"Sindri worked for 30 hours.<br>He was paid \\(\\$600.\\)<br>How much was he paid per hour?","24057":"Shahul had \\(\\$2500.\\) He spent \\(\\$2000.\\) What percentage of his money did he spend?","24087":"Anna and James had the same amount of money at first. Anna bought some pens and had \\(\\$4.30\\) left. James wanted to buy highlighters only. The number of highlighters that James wanted to buy was the same as the number of pens Anna bought. However, he was short of \\(\\$8.70.\\) Each pen cost \\(\\$1.20\\) and each highlighter cost \\(\\$2.50.\\) How much money did Anna have at first? \\(\\$\\)[?]","24093":"Kean Yew had 7200 shuttlecocks. He packed the shuttlecocks into as many bags of 7 shuttlecocks as possible and had some shuttlecocks left unpacked. He sold all his shuttlecocks and received \\(\\$3608.\\) Each bag of shuttlecocks was sold at \\(\\$3.50.\\)<br>(a) How many shuttlecocks were left unpacked? [?]<br>(b) Each of the shuttlecocks left unpacked was sold at the same price. How much did each of the shuttlecocks left unpacked sell at? \\(\\$\\)[?]","24109":"Julian bought some mangoes and watermelons for \\(\\$146.\\) He bought 6 more mangoes than watermelons. Each mango cost \\(\\$3\\) and each watermelon cost \\(\\$5.\\) How many mangoes and watermelons did he buy altogether? [?]","24110":"A group of children visit a museum. The entrance fee for each child is \\(\\$3.\\) For every 3 children, the 4th child is free. The group of children pay \\(\\$114\\) altogether. What is the greatest number of children in the group? [?]","24121":"Qiumei has \\(\\$62\\) and she wants to buy some files from a bookshop. The bookshop sells the files at \\(\\$2\\) each or a pack of 5 similar files for \\(\\$9.\\) What is the most number of files she can buy with all her money?<br>[?]","24154":"Liling had some money. She spent \\(\\$14\\) on a story book, \\(\\dfrac{3}{7}\\) of the remainder on a school bag and saved the rest. She saved \\(\\$28.\\) How much money did Liling have at first? [?]","24164":"On Monday, Mr Yusof bought 4 tables. Each table cost \\(\\$357.\\) On Tuesday, he bought 6 identical chairs. The 6 chairs cost as much as the 4 tables. How much did each chair cost?<br>\\(\\$\\)[?]","24212":"A school bought 25 tables and chairs. A table cost \\(\\$120\\) and a chair cost \\(\\$80.\\) The school paid a total of \\(\\$2480.\\)<br>a) How many tables were bought? [?]<br>b) How many chairs were bought? [?]","24239":"A jar of peanut butter costs \\(\\$2.80\\) and a bundle of 3 jars of peanut butter costs \\(\\$7.\\) Samuel wants to buy exactly 26 jars of peanut butter. What is the least amount of money he needs? \\(\\$\\)[?]","24279":"What is the price of the tennis racket after discount? Usual Price: \\(\\$89.\\)<br>Ans: \\(\\$\\)[?]","24285":"Mrs Lee wanted to buy 9 boxes of mooncakes but she was short of \\(\\$28.\\) She bought 7 boxes of mooncakes and had \\(\\$22\\) left. How much money did she have at first?<br>Ans: \\(\\$\\)[?]","24310":"Usual price: 95\u00a2 per apple. SPECIAL OFFER: 8 apples for \\(\\$6.00.\\) Mrs Tan bought 8 apples during the special offer. Without the special offer, how much more would she have to pay for the 8 apples? [?]","24316":"What is the percentage discount for the shirt shown? Sale Price \\(\\$45.\\) Usual price: \\(\\$75.\\) [?]","24321":"Ahmad had a sum of money. He could only buy 10 notebooks with all the money he had. He decided to buy 6 notebooks and 4 pens. He had \\(\\$2.40\\) left. Each pen cost \\(\\$0.80.\\) How much money did Ahmad have at first? [?]","24330":"The pie chart shows the number of \\(\\$10,\\) \\(\\$20,\\) \\(\\$50\\) and \\(\\$100\\)-tickets sold by a concert organiser. \\(\\dfrac{1}{2}\\) of the number of tickets sold were \\(\\$10\\)-tickets. \\(\\dfrac{3}{10}\\) of the number of tickets sold were \\(\\$20\\)-tickets. 15% of the tickets sold were \\(\\$50\\)-tickets. What fraction of the tickets sold were \\(\\$100\\)-tickets? Express your answer in the simplest form.","24331":"The pie chart shows the number of \\(\\$10,\\) \\(\\$20,\\) \\(\\$50\\) and \\(\\$100\\)-tickets sold by a concert organiser. \\(\\dfrac{1}{2}\\) of the number of tickets sold were \\(\\$10\\)-tickets. \\(\\dfrac{3}{10}\\) were \\(\\$20\\)-tickets and 15% were \\(\\$50\\)-tickets. A total of \\(\\$10\\) 810 was collected from the sale of all the tickets. How much was collected from the sale of \\(\\$10\\)-tickets? [?]","24332":"A money box contained some money at first. A took \\(\\dfrac{1}{2}\\) the amount of money and another \\(\\$1500\\) from the box. After that, B took \\(\\dfrac{1}{4}\\) of the remaining amount of money and another \\(\\$850\\) from the box. In the end, C took the rest of the money left in the box. Given that C took \\(\\$1400,\\) find the amount of money in the box at first. [?]","24352":"Mrs Chan only had the following coins in her wallet: 5\u00a2, 10\u00a2, 20\u00a2, 50\u00a2 and \\(\\$1.\\) She took three coins from her wallet and dropped them into a donation box. Which one of the following could not be the amount she donated?","24359":"The table shows the charges for bicycle rental: For the first 1 hour \\(\\$6.00\\); for every additional 30 minutes or part thereof \\(\\$2.50.\\) Jane rented a bicycle from 5.30 p.m. to 7.45 p.m. How much did she pay? Ans: \\(\\$\\) [?]","24373":"Su Ling wanted to buy a laptop with her savings. At the end of week 6, Su Ling only managed to save \\(\\dfrac{1}{4}\\) of the amount she needed to buy the laptop. From the line graph, her savings at the end of week 6 were \\(\\$520.\\) How much more does she need to save? Ans: \\(\\$\\) [?]","24402":"Mary had \\(\\$350.\\) She spent the same amount of money each day. After 5 days, she was left with \\(\\dfrac{4}{5}\\) of her money. How much did she spend each day?","24405":"The price of an e-dictionary was \\(\\$45\\) after a discount of 10%. Rina was then given an additional discount of \\(\\$9.\\) What was the total percentage discount given to Rina for the e-dictionary?","24414":"Shop A and shop B sold an identical television each at the same price, after the discounts shown. Shop A: 40% Discount, Usual Price: ? Shop B: 20% Discount, Usual Price: \\(\\$1500.\\) What was the usual price of the television sold by shop A? (Give your answer in \\$.)<br>[?]","24424":"Simon could buy 9 notebooks and 54 pencils with \\(\\$64.80.\\) With that same amount of money, he could buy 24 notebooks. He then decided to buy only pencils. What was the most number of pencils Simon could buy with \\(\\$64.80\\)?<br>[?]","24431":"In a shop, erasers and pencils are sold only in boxes. A box of 3 erasers costs \\(\\$5.20\\); a box of 5 pencils costs \\(\\$6.65.\\) (a) Mrs Lim wants to get 40 erasers and 78 pencils for her students. What is the least amount of money she will need to spend on the erasers and pencils? (Give your answer in \\$.) (b) Mr Wong spent \\(\\$328.30\\) to buy a total of 57 boxes of erasers and pencils. How many boxes of pencils did he buy?<br>(a) [?] (b) [?]","24472":"Huiling had \\$z. Ravi had twice as much money as Huiling. Jas had \\(\\$5\\) more than Ravi. If Jas had \\(\\$10,\\) how much money did Huiling have?","24493":"The original price of a book was $k$. David bought 15 such books. After he was given a discount of \\(\\$10,\\) he paid a total of \\(\\$110.\\) What was the original price of one such book?<br>\\(\\$\\)[?]","24494":"The table shows the charges for renting a bicycle. On Friday, Mr Wu rented a bicycle and returned it at 6 p.m. He paid a total of \\(\\$24.\\) For how many hours did he rent the bicycle?<br>[?] h","24516":"During a sale, a chair was sold at \\(\\$210.\\) This was 30% less than the usual price of the chair. What was the usual price of the chair?","24536":"The total cost of a handphone and a laptop is \\(\\$1185.\\) The handphone costs \\(\\dfrac{2}{3}\\) as much as the laptop. What is the cost of the handphone? Ans: \\(\\$\\)[?]","24543":"The actual average income of a group of adults was \\(\\$3150.\\) When Ms Tan recorded the income of these adults, she wrongly keyed in one adult's income as \\(\\$2400\\) when it should have been \\(\\$4200.\\) As a result, Ms Tan calculated the average income as \\(\\$3100.\\) How many adults were there in the group? [?]","24553":"Mr Lim and Mr Tan each had 200 identical pots to sell. The original price of each pot was \\(\\$70.\\) On the day when Mr Tan had sold 80% of his pots, Mr Lim decided to offer a 15% discount for his remaining pots. How much did Mr Lim collect from the sale of these remaining pots? Ans: \\(\\$\\)[?]","24587":"A board game costs \\(\\$63.\\) A toy costs \\(\\$45\\) less than the board game. Find the ratio of the cost of the toy to the cost of the board game in the simplest form.","24597":"A shop sells pens. One pen costs \\(\\$2\\) and 1 packet of 4 pens costs \\(\\$5.\\) Benny wants to buy 101 pens. What is the least amount of money Benny needs to buy the 101 pens? Ans: \\(\\$\\)[?]","24607":"At first, Wonderlicious Bakery baked a total of 370 cupcakes, tarts and muffins. Half of its tarts and some muffins were sold. Then, 30 more cupcakes were baked. There was an equal number of cupcakes, tarts and muffins at the end. A total amount of \\(\\$108\\) was collected from the sale of tarts. Each cupcake costs \\(\\$2,\\) each tart costs \\(\\$1.50\\) and each muffin costs \\(\\$4.\\)<br>(a) How many tarts did Wonderlicious Bakery sell? Ans: [?]<br>(b) How much money was collected from the sale of muffins? Ans: \\(\\$\\)[?]","24625":"Anna had some \\(\\$2\\) and \\(\\$5\\) notes in the ratio of 3 : 1. The total value of the notes is \\(\\$99.\\) How many pieces of \\(\\$5\\) notes did Anna have? [?]","24648":"Tammy bought some apples and pears. The number of apples to the number of pears is 2 : 1. An apple cost \\(\\$1.50\\) and a pear cost \\(\\$0.90.\\) Tammy spent \\(\\$936.\\) How many pears did she buy?<br>[?]","24649":"In a shop, Mr Jolly had 5500 milk cartons for sale.<br>(a) 45% of the milk cartons were strawberry milk. How many cartons of strawberry milk were there?<br>[?]<br>(b) Mr Jolly sold each carton of milk for \\(\\$3.\\) He collected \\(\\$12375.\\) What percentage of milk cartons were sold?<br>[?] %","24650":"The table shows the number of books sold in a bookshop from Monday to Thursday.<br>Monday: 720<br>Tuesday: 240<br>Wednesday: 380<br>Thursday: 560<br>(a) What percentage of the books were sold on Tuesday? Give your answer rounded to 2 decimal places.<br>[?] %<br>(b) Terry wanted to buy 15 books from the bookshop but was short of \\(\\$54.\\) In the end, he bought 13 books and had \\(\\$34.60\\) left. Find the cost of 1 book.<br>\\(\\$\\) [?]","24660":"The usual price of a television set was \\(\\$2000.\\)<br>John bought the television set at a discount of 20%.<br>However, he had to pay 7% GST.<br>How much did John pay for the television set?","24661":"A pen and an eraser cost \\(\\$1.50.\\) Min Yi paid \\(\\$18\\) for 15 pens and 10 erasers. Jun Jie bought 3 erasers. Find the amount Jun Jie paid.","24669":"Hwee Ling had \\(\\$6000.\\)<br>She spent 30% of her money and saved the remaining amount in her bank account.<br>The bank paid an interest of 2% at the end of each year.<br>How much interest did Hwee Ling earn at the end of one year? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","24682":"The table shows the parking charges for a motorist in a shopping centre.<br>7 am to 6 pm \u2014 1st hour: \\(\\$2.20\\); subsequent 30 minutes or part thereof: \\(\\$1.50.\\)<br>After 6 pm \u2014 \\(\\$2.50\\) per entry.<br>Mr Lim parked his car from 4 p.m. to 7 p.m. How much parking charges did he pay?","24694":"BIG SALE!!! Buy first toaster oven at 10% discount. Buy second toaster oven at 20% discount. Price of 2nd toaster oven should be equal to or lower than price of 1st toaster oven.<br>Uncle Jaime bought 2 toaster ovens at the sale. The two toaster ovens were priced at \\(\\$40\\) and \\(\\$60.\\) How much did he pay for the two toaster ovens? [?]","24701":"Alisha bought candles of 3 different fragrances. The bar graph shows the number of each type of candle she bought. The number of candles is not shown on the scale.<br>(a) What percentage of the candles Alisha bought were mint candles? [?]<br>(b) The price of each rose candle is \\(\\$12.80.\\) Alisha spent \\(\\$153.60\\) on rose candles. How many vanilla candles did she buy? [?]","24707":"Raju, Sam and Tristan had a total of \\(\\$435.\\) Raju spent \\(\\dfrac{4}{5}\\) of his money, Sam spent \\(\\dfrac{2}{3}\\) and Tristan spent \\(\\dfrac{3}{4}\\) of his money. In the end, Raju had \\(\\$55\\) more than Sam and Tristan had \\(\\$10\\) more than Sam. How much money did Tristan have at first? [?]","24708":"Matt bought some Dino Brand and Lion Brand correction tapes. Dino Brand: 4 for \\(\\$8.50.\\) Lion Brand: 3 for \\(\\$7.25.\\) \\(\\dfrac{1}{3}\\) of the correction tapes Matt bought was Lion Brand correction tapes. He spent \\(\\$198\\) more on Dino Brand correction tapes. How much did he spend on the correction tapes? [?]","24718":"The average allowance of 3 siblings is \\(\\$34.\\) The eldest sibling received \\(\\$50.\\) The other two siblings received the same amount of money. How much did each of the other two siblings receive?","24738":"The cost of 3 chairs and 5 tables is \\(\\$360.\\) The cost of 6 chairs and 15 tables is \\(\\$900.\\) What is the cost of 1 table? (Round off the answer to the nearest \\(\\$10.\\)) [?]","24741":"Mrs Lim bought a watch at a discount of 15% and she paid \\(\\$124.10,\\) not including GST. What is the original price of the watch including 8% GST? [?]","24742":"Mrs Sim bought a bag for \\(\\$140.\\) She paid the cashier in \\(\\$10\\) and \\(\\$5\\) notes. If there were fifteen notes altogether, how many \\(\\$10\\) notes were there? [?]","24744":"Serena has a monthly salary of \\(\\$8650.\\) She spent \\(\\dfrac{1}{5}\\) of her money on food. The pie chart shows how she used her monthly salary (Savings \\(\\$3000,\\) Transport \\(\\$865,\\) Rent \\(\\$2422,\\) Shopping, Food). (a) How much money did Serena spend on food? (b) What percentage of her salary did she spend on shopping? Give your answer correct to nearest 1%. [?] [?]","24760":"Ravi had 6 coins in his wallet. He took out only 4 coins to pay the exact amount for a bun. The coins are 5\u00a2, 5\u00a2, 10\u00a2, 20\u00a2, 50\u00a2 and \\(\\$1.\\) Which of the following amounts is <b>not<\/b> a possible cost of the bun?","24768":"Meifang spent 20% of her money on a shirt. She used the rest of the money to buy a bag and a necklace. The bag cost \\(\\$24\\) more than the shirt. The necklace cost \\(\\$72.\\) Find the cost of the bag.","24771":"7 men donated a total of \\(\\$1435.\\)<br>What is the average amount donated by each man?<br>\\(\\$\\)[?]","24774":"Candies were sold by mass: First 100 g costs \\(\\$5,\\) every additional 50 g costs \\(\\$2.\\) Rashid bought a packet of candies which weighed 250 g. How much did he pay?<br>\\(\\$\\)[?]","24780":"At first, the ratio of Weijie's savings to Lihua's savings was 5 : 4. After each of them spent \\(\\$40,\\) the ratio of Weijie's savings to Lihua's savings became 13 : 10. What was Lihua's savings at first?<br>\\(\\$\\)[?]","24815":"After a 20% discount, the price of a T-shirt was \\(\\$40.\\) A first-time customer was given a further discount of \\(\\$6.\\) What was the total percentage discount given to a first-time customer for the T-shirt?","24823":"The table shows the charges for a cleaning job. First 2 hours: \\(\\$35\\) per hour. Every additional hour: \\(\\$25.\\)<br>Mandy paid \\(\\$145\\) for a cleaning job. How many hours of cleaning did she pay for? [?] h","24836":"At first, Nathan had \\(\\$92\\) and Mabel had \\(\\$50.\\) Each of them bought a book at the same price. The ratio of the amount of money Nathan and Mabel had left was 5 : 2. How much did the book cost? [?]","24887":"Mr Raja paid a total of \\(\\$1406.40\\) for a laptop and a camera at a sale. The price of the camera before discount was \\(\\$864.\\) Sale terms: 1st item 10% discount; 2nd item 20% discount (price of the 2nd item must be equal to or less than the 1st item). What was the price of the laptop before discount? \\(\\$\\)[?]","24892":"Tom wanted to buy a new television and started a 4-month savings plan. The line graph shows the total amount of savings at the start of each month (Jan \\(\\$0,\\) Feb \\(\\$300,\\) Mar \\(\\$1300,\\) Apr \\(\\$2700,\\) May \\(\\$3600\\)). What was the percentage increase in the amount of savings from the end of January to the end of February? [?] %","24899":"At a bakery, cupcakes are sold in boxes of 4 at \\(\\$2.10\\) and tarts are sold in boxes of 3 at \\(\\$1.60.\\) Mrs Lee spent a total of \\(\\$203.60\\) on some cupcakes and tarts at the bakery. She repacks them onto trays such that there are 3 cupcakes and 5 tarts on each tray for a party. How many tarts did she buy from the bakery? [?]","24927":"The pie chart shows how Michael spent his money. Toy = \\(\\$38,\\) Lunch = \\(\\$10,\\) Movie = \\(\\$12,\\) and the Book segment is a right angle. (a) How much money did Michael spend on the book? \\(\\$\\)[?] (b) What percentage of Michael's money was spent on lunch? [?]%","24986":"Tim had \\(\\dfrac{2}{3}\\) as much money as Peter. After Tim received \\(\\$120\\) from his mother and Peter used \\(\\$120,\\) Tim had twice as much money as Peter. How much money did Tim have at first?<br>Answer: \\(\\$\\)[?]","25010":"Bala bought 3 pens and 2 files. The total cost of the 3 pens and 2 files was \\(\\$7.65.\\)<br>(a) Bala gave the cashier \\(\\$50\\) to buy the 3 pens and 2 files. How much change did he receive? \\(\\$\\)[?]<br>(b) Chandra bought 9 such pens and 6 such files. How much did he pay? \\(\\$\\)[?]","25022":"A handphone has a price before GST of \\(\\$890.\\) What is the price of the handphone after adding 8% GST? \\(\\$\\)[?]","25031":"Each small card sold at \\(\\$5,\\) each big card at \\(\\$8.\\) Janice sold 12 small and 7 big; Deepa 7 small and 9 big; Zi Ying 6 small and 10 big. Which of the three children collected the most money?","25034":"A company offered 150 laptops at a 20% discount during a 5-day sale. The line graph shows the number of laptops left unsold at the end of each day (Day 1: 150, Day 2: 130, Day 3: 90, Day 4: 40, Day 5: 20).<br>(a) On which day was the most number of laptops sold? Day [?]<br>(b) What percentage of the laptops were sold on the first 2 days? [?] %<br>(c) During the sale, the discounted price of the laptop was \\(\\$1288.\\) After the sale, the remaining laptops were sold at a discount of 50% instead of 20%. What was the total amount of money collected from selling all 150 laptops? \\(\\$\\)[?]","25060":"The table shows the prices for a farm tour.<br>First 10 tickets: \\(\\$8\\) each<br>Every additional ticket: \\(\\$5\\)<br>A group went for the farm tour and paid \\(\\$160.\\) How many tickets did the group buy?","25083":"The table shows the postage rates for sending mails in Singapore.<br>Mass not over 20 g: small \\(\\$0.31,\\) large \\(\\$0.60\\)<br>Mass not over 40 g: small \\(\\$0.38,\\) large \\(\\$0.60\\)<br>Mass not over 100 g: large \\(\\$0.60\\)<br>Mass not over 250 g: large \\(\\$0.90\\)<br>Mass not over 500 g: large \\(\\$1.15\\)<br>Mr Cheng sent a small envelope with a mass of 30 g and a large envelope with a mass of 400 g. How much postage did Mr Cheng pay altogether? [?]","25096":"Simon bought an equal number of sandwiches and pies. A sandwich cost \\(\\$4\\) and a pie cost \\(\\$1.80\\) less than a sandwich. He paid a total of \\(\\$279.\\) How much did Simon pay for the pies? [?]","25102":"Mr Tan buys a laptop that costs \\(\\$2460.\\) He also has to pay a 7% GST. How much is the GST? \\(\\$\\)[?]","25106":"Mr Mani sold an equal number of large and small pies at the prices shown and collected \\(\\$1092.\\)<br>How many large pies did Mr Mani sell? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","25108":"The original price of a television was \\(\\$1700.\\) Cathy bought it at a discount of 20% and had \\(\\dfrac{4}{5}\\) of her money left. She then spent 30% of the money left on a sofa.<br>(a) How much was the cost of the television after the discount? \\(\\$\\)[?]<br>(b) How much did Cathy spend on the sofa? \\(\\$\\)[?]","25110":"The rental rates of a bicycle at a neighbourhood park is shown in the table. First 1 hour: \\(\\$6.80.\\) For every additional 30 minutes or part thereof: \\(\\$2.50.\\)<br>(a) Keith rented a bicycle from 8 am to 10.45 am. How much did he pay for the rental? \\(\\$\\)[?]<br>(b) William rented a bicycle and paid \\(\\$19.30\\) in total. What was the most number of minutes that William rented the bicycle for? [?]","25129":"The original price of a tablet was \\(\\$550.\\) During a sale, Melvin was given a 30% discount for the tablet. How much did he pay for the tablet?<br>\\(\\$\\)[?]","25145":"Patrick bought 15 rulers and 20 highlighters at \\(\\$50.\\) He wanted to buy another highlighter but was short of \\(\\$0.90.\\) He decided to buy another ruler instead and had \\(\\$0.40\\) left. How much did each ruler cost?<br>\\(\\$\\)[?]","25157":"The table shows the charges for renting a bicycle. Monday to Friday: 9 a.m. to 5 p.m. is \\(\\$5\\) per hour and 5 p.m. to 8 p.m. is \\(\\$7\\) per hour. Saturday and Sunday: 9 a.m. to 8 p.m. is \\(\\$8\\) per hour.<br>(a) John rented a bicycle from 10 a.m. to 1 p.m. on Sunday. How much did he have to pay? \\(\\$\\)[?]<br>(b) On Tuesday, Ken rented a bicycle and returned it at 7 p.m. He paid a total of \\(\\$29.\\) What was the earliest time he rented the bicycle? [?]","25167":"The price of a laptop before GST was \\(\\$1200.\\)<br>What was the price of the laptop including 7% GST? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","25170":"The total cost of a big sticker and a small sticker is \\(\\$1.20.\\) John paid \\(\\$10.40\\) for 9 big stickers and 8 small stickers. Luke bought 9 small stickers. How much did Luke pay for 9 small stickers? [?]","25199":"1 storybook and 2 similar water bottles cost \\(\\$90.\\) 2 similar storybooks cost as much as 5 similar water bottles. How much does 1 water bottle cost? \\(\\$\\)[?]","25237":"Ms Loh boarded a taxi at the airport and headed to a hotel 16 km 300 m away. The taxi charges are: first kilometre or less \\(\\$4.20\\); every 400 m thereafter or less \\(\\$0.27\\); airport surcharge \\(\\$3.50.\\) How much was her taxi fare? [?]","25244":"Ali earns a fixed monthly salary. He spent \\(\\dfrac{1}{3}\\) of his salary on a table and \\(\\dfrac{5}{6}\\) of his remaining salary on a television. After buying the table and television, Ali had \\(\\$360\\) left. Then he spent \\(\\$336\\) to buy a total of 20 plates and bowls. Each bowl cost \\(\\$27\\) while each plate cost \\(\\$10.\\) What fraction of Ali's salary was spent on the plates?","25245":"Mr Tan sold chairs at a furniture sale event. For every chair sold, he would earn \\(\\$3.\\) For every 25 chairs sold, he would earn an additional \\(\\$10.\\) Given that Mr Tan earned \\(\\$364\\) from selling the chairs, how many chairs did he sell? [?]","25250":"Class 5K and Class 5L made some large and small keychains to raise funds for charity. Each large keychain cost 4 times as much as each small keychain. Each large keychain cost \\(\\$14.80.\\) Class 5K sold an equal number of small and large keychains. They collected \\(\\$629\\) from the sale of all the keychains. How many large keychains did Class 5K sell? [?]","25251":"Each large keychain cost \\(\\$14.80\\) and each small keychain cost \\(\\$3.70.\\) Class 5L collected \\(\\$529.10\\) from selling small and large keychains. The class sold 18 more small keychains than large keychains. How many small keychains did Class 5L sell? [?]","25259":"Mdm Jeya receives a monthly salary of \\(\\$6300.\\) She spends 30% of her salary on her apartment rent and saves \\(\\dfrac{3}{7}\\) of her salary in the bank. Mdm Jeya spends the rest of her monthly salary on food and transport. How much does Mdm Jeya spend on food and transport every month? \\(\\$\\)[?]","25260":"The usual price of a laptop was \\(\\$1580.\\) Wayne bought the laptop at a discount of 20%.<br>(a) What was the discounted price of the laptop? \\(\\$\\)[?]<br>(b) There was a 7% GST on the discounted price. How much did Wayne pay for the laptop? \\(\\$\\)[?]","25284":"The usual price of a watch was \\(\\$800.\\) During a sale, the watch was selling at \\(\\$560.\\) What was the percentage discount given? [?]","25290":"Jim's savings for 5 months were shown in the table.<br>January: \\(\\$35,\\) February: \\(\\$28,\\) March: \\(\\$0,\\) April: \\(\\$51,\\) May: \\(\\$33.\\)<br>What was the average amount of money Jim saved from January to May? [?]","25353":"The postage rate for sending letters to Japan is: First 20 g costs \\(\\$0.80\\); per additional 10 g or part thereof costs \\(\\$0.25.\\) Mrs Tan sent a letter weighing 38 g to Japan. How much did she pay for the postage?","25355":"Eddie bought a card and a sunflower for \\(\\$8.20.\\) Jane bought a card and 2 sunflowers for \\(\\$14.\\) How much did a card cost?","25362":"The pie chart shows Natalie's expenditure last month. Bills = 15%, Food = \\(\\dfrac{1}{2}\\), Transport is a right angle (25%), Books = \\(\\$40.\\) How much did she spend on food?<br>\\(\\$\\)[?]","25365":"Dave had more money than Jerry. After Dave gave Jerry \\(\\$140,\\) they have the same amount of money. How much more money did Dave have than Jerry at first?<br>\\(\\$\\)[?]","25376":"A school is collecting money for a donation drive. \\(\\dfrac{1}{2}\\) of the students in the school donated \\(\\$3.\\) \\(\\dfrac{2}{5}\\) of them donated \\(\\$4.\\) The rest of the students donated \\(\\$5.\\) A total of \\(\\$9000\\) in donation is collected from the school. How many students are there in the school?<br>[?]","25400":"The usual price of a study table was \\(\\$300.\\) During a sale, Mrs Kumar bought 2 such study tables at a discount of 60%. How much was the total discount?","25416":"A group of students had an average of \\(\\$10.\\) Three students with a sum of \\(\\$57\\) joined the group and the average amount of each student increased by \\(\\$3.\\) How many students were there in the group at first? [?]","25432":"In a bakery, donuts and cupcakes are sold only in boxes. A box of 8 donuts costs \\(\\$15\\) and a box of 5 cupcakes costs \\(\\$7.\\) Alice and Ben were given a sum of money. Alice needed 20 donuts and 3 cupcakes for her party. After buying, Alice passed the rest of the money to Ben.<br>(a) What was the least amount of money Alice spent? Give your answer in dollars. \\(\\$\\)[?]<br>(c) Ben spent \\(\\dfrac{4}{7}\\) of the rest of the money and had \\(\\dfrac{1}{3}\\) of the sum left. How many donuts and how many cupcakes did Ben buy? Donuts: [?], Cupcakes: [?]","25444":"Adam Electronics Store gave a storewide discount of 20% during its annual sale. As a member of the store, Ming Hui is entitled to an additional 10% discount on the discounted price. He bought a camera. Usual Price: \\(\\$2000.\\)<br>How much did Ming Hui pay for the camera?","25453":"A can of mushroom soup costs \\(\\$3.20\\) and a bundle of 3 cans of mushroom soup costs \\(\\$8.\\) Diane wants to buy 20 cans of mushroom soup. What is the least amount of money she needs? \\(\\$\\)[?]","25467":"Parking on Friday to Sunday: 1st hour \\(\\$2.60,\\) every additional 30 min or part thereof \\(\\$1.89.\\) Jamie was charged \\(\\$12.05\\) for parking from 10 a.m. on a Saturday. What is a possible time she left the mall?","25512":"The table shows the prices of 5 items: Cap \\(\\$4.00,\\) Towel \\(\\$0.90,\\) Haversack \\(\\$8.90,\\) Water bottle \\(\\$17.50,\\) Sleeping bag \\(\\$16.50.\\) Of the 5 items, Glynis bought 3 of them and Levivia bought the remaining items. The items each of them bought were different. Glynis spent \\(\\$11\\) more than Levivia. How much money did Glynis spend on the 3 items? [?]","25513":"The table shows the prices of 5 items: Cap \\(\\$4.00,\\) Towel \\(\\$0.90,\\) Haversack \\(\\$8.90,\\) Water bottle \\(\\$17.50,\\) Sleeping bag \\(\\$16.50.\\) Of the 5 items, Glynis bought 3 (spending \\(\\$29.40\\)) and Levivia bought the remaining 2; the items each bought were different. What was the cheapest item each of them bought?","25526":"On Saturday, Mr Zusin prepared 66 of each of five items and sold some (bar graph). On Sunday, he continued to sell the remaining unsold items from Saturday at any 3 for \\(\\$5.\\) He sold all the items. How much money did he collect on Sunday? [?]","25533":"Omar's monthly salary was \\(\\$7245.\\) Find Omar's total salary in \\(1\\dfrac{1}{4}\\) years. [?]","25567":"Mrs Tan bought 24 identical packets of nuts for \\(\\$30.\\) After the price of each packet of nuts had increased, she could only buy 20 packets with the same amount of money. What was the percentage increase in the price of each packet of nuts? [?] %","25576":"Elyse spent \\(\\dfrac{2}{5}\\) of her money and an additional \\(\\$50\\) on a pair of shoes. She spent \\(\\dfrac{3}{5}\\) of the remainder and an additional \\(\\$86\\) on a handbag. She spent half of the money that was left on food for \\(\\$25.\\) How much money did she have at first? [?]","25593":"Gavin buys $n$ notebooks at \\(\\$4\\) each. He gave the cashier \\(\\$30.\\) How much change did he receive?","25606":"At the market, 100 g of crabs cost \\(\\$2.40.\\) How much does 4 kg of crabs cost?<br>\\(\\$\\)[?]","25645":"Ahmad has some 10-cent, 20-cent and 50-cent coins. There are 3 times as many 50-cent coins as 20-cent coins. The number of 50-cent coins is \\(\\dfrac{3}{5}\\) of the number of 10-cent coins. The total amount of the 50-cent and 10-cent coins Ahmad has is \\(\\$84.\\) What is the total number of 50-cent and 10-cent coins Ahmad had?<br>[?]","25651":"A bag cost \\(\\$200.\\) Kate bought it at a 25% discount. How much did she pay for the bag after adding 8% GST?","25657":"Sam has some 1-dollar and 20-cent coins in the ratio 2 : 5. The total value of the coins is \\(\\$21.\\) How many 20-cent coins does he have? [?]","25658":"The table shows Macy's savings from January to March. Her average savings for the 3 months was \\(\\$52.\\) How much did she save in March?<br>January: \\(\\$28\\)<br>February: \\(\\$70\\)<br>March: ? [?]","25692":"A tennis racket has a sale price of \\(\\$135\\) and a usual price of \\(\\$180.\\) What is the percentage discount for the tennis racket? [?]","25697":"The parking charges at ABC car park are: First hour \\(\\$1.80\\); every additional half an hour \\(\\$0.60.\\) Mr Tan parked his car for 9 hours at ABC car park. How much did he pay, in \\$? [?]","25705":"In Country X, the height of six 10-cent coins is the same as that of five 20-cent coins (Diagram 1). Diagram 2 shows an unknown number of 10-cent coins stacked to the same height as another stack of 20-cent coins. The total value of the 2 stacks of coins in Diagram 2 is \\(\\$8.\\) (a) Find the number of 10-cent coins used in Diagram 2. (b) Find the value of all the 20-cent coins used in Diagram 2, in \\$. (a) [?] (b) [?]","25707":"Mrs Goh had some money. She used \\(\\$53\\) to pay for 4 identical large potted plants and 7 identical small potted plants. If she bought another large potted plant, she would be short of \\(\\$3.50.\\) If she bought another small potted plant, she would have \\(\\$1.50\\) left. (a) What is the difference in price between the large and the small potted plant, in \\$? (b) Find the price of one large potted plant, in \\$. (a) [?] (b) [?]","25718":"Ninety identical pencils cost \\(\\$57.60.\\) What is the cost of one such pencil?","25746":"Mr Mohammad took a taxi from home to his office. His taxi fare was based on the charges: first 1 kilometre or less \\(\\$4.30\\); every additional 400 m or less \\(\\$0.24\\); every 45 seconds of waiting or less \\(\\$0.24.\\) The taxi stopped once at a traffic light and travelled a total distance of 7 km to reach his office. Mr Mohammad paid \\(\\$9.10.\\) What was the longest possible duration the taxi stopped at the traffic light?<br>[?] s","25769":"A lollipop cost \\(\\$0.70.\\) There were 80 lollipops in a box. Janie bought 8 such boxes of lollipops for her class party. How much did she spend on the lollipops?","25798":"[Paper 2 Q14] A pencil and an eraser cost \\(\\$1.05.\\) A pencil and a ruler cost \\(\\$0.85.\\) Bernice paid \\(\\$6.90\\) for 8 such pencils and 5 such erasers. Chandra paid \\(\\$3.30\\) for some rulers.<br>(a) What was the cost of one such eraser? \\(\\$\\)[?]<br>(b) How many such rulers did Chandra buy? [?]","25823":"Kylie received a fixed sum of salary monthly. In January, she saved 20% of her salary. Her savings in February increased by 40%. Her total savings for the 2 months was \\(\\$480.\\) What was the sum of salary given to her monthly?<br>\\(\\$\\)[?]","25843":"Melissa has \\(\\$45\\) and Jing Zhi has \\(\\$20.\\) Express the amount of money Jing Zhi has as a fraction of the amount of money Melissa has.","25844":"6 pencils cost \\(\\$10.80.\\) Find the cost of 9 pencils. \\(\\$\\)[?]","25855":"The graph shows the number of tickets sold for a basketball match from Monday to Friday.<br>(a) What was the total number of tickets sold from Monday to Wednesday? [?]<br>(b) The usual price of a ticket was \\(\\$70.\\) On Friday, tickets were sold at a 5% discount. How much money was collected from the sale of tickets on Friday? \\(\\$\\)[?]","25858":"At a furniture shop, office chairs are sold at the usual price of \\(\\$106\\) each before GST. During a sale in October, the shop offered a 25% discount on the office chair.<br>(a) What was the discount given for each office chair? \\(\\$\\)[?]<br>(b) Karen had \\(\\$550.\\) What was the greatest number of chairs she could buy during the sale in October? [?]","25894":"One packet of 4 pens was sold at \\(\\$7.95.\\) A stationery shop was having a promotion. For every 2 packets of pens bought, Simon received a discount of \\(\\$1.50.\\) He bought 28 pens in total. How much did he spend? \\(\\$\\)[?]","25899":"Mr Chan had a sum of money at first. He gave \\(\\dfrac{2}{5}\\) of it to his wife. He gave \\(\\dfrac{3}{4}\\) of the remainder to his two children. Each child received the same amount of money. Mr Chan saved the rest of his money. He saved \\(\\$378.\\) How much did Mr Chan give to each of his children? \\(\\$\\)[?]","25900":"A sofa cost \\(\\$1850.\\) Bala bought the sofa during a sale and a discount of 25% was given.<br>(a) What was the discounted price? \\(\\$\\)[?]<br>(b) Bala was charged 8% GST on the discounted price. How much did he pay for the sofa including GST? \\(\\$\\)[?]","25901":"At a carnival, a child ticket is \\(\\$10\\) and an adult ticket is \\(\\$25.\\) The number of children was thrice the number of women. The number of women was twice the number of men. There were 210 children at the carnival. How much more was collected from the sale of adult tickets compared to child tickets? \\(\\$\\)[?]","25932":"2 pencils and 4 notebooks cost \\(\\$26.\\) 4 pencils and 2 notebooks cost \\(\\$22.\\) Find the cost of 1 notebook.<br>\\(\\$\\)[?]","25950":"A brochure shows a SALE in Shop A: 35% discount.<br>(a) Anita bought 2 of the same leather bags during the sale. The usual price of the leather bag was \\(\\$450.\\) Find the amount of discount she received for both bags. \\(\\$\\)[?]<br>(b) Meili bought a backpack at the sale. The usual price of the backpack was 40% of the usual price of the leather bag. What was the discounted price of the backpack? \\(\\$\\)[?]","25952":"Ali and Betty had a total of \\(\\$5700.\\)<br>After Ali spent \\(\\dfrac{1}{3}\\) of his money and Betty spent \\(\\dfrac{2}{5}\\) of her money, they had an equal amount left.<br>Betty then used \\(\\dfrac{3}{4}\\) of the amount she had left to buy a laptop and gave the remaining amount to her sister and brother.<br>Betty's brother received 3 times the amount that Betty's sister received.<br>(a) How much did Betty have at first?<br>(b) How much did Betty's sister receive?","25989":"The table shows the postage rates for sending packages to Indonesia: not over 20 g costs 60 cents, not over 50 g costs 80 cents, not over 100 g costs \\(\\$1.20,\\) every additional 100 g costs \\(\\$1.20.\\) Ali sent two packages with a mass of 50 g and 370 g respectively. How much postage did Ali pay altogether?<br>\\(\\$\\)[?]","25991":"The usual price of a television set was \\(\\$6000.\\) Mr Jones bought the television set at a 15% discount.<br>(a) How much was the discount? \\(\\$\\)[?]<br>(b) GST is 8% of the discounted price. How much did Mr Jones pay for the television set inclusive of GST? \\(\\$\\)[?]","25997":"Chicken bites cost \\(\\$2.65\\) for one box and fishball costs \\(\\$1.85\\) for one stick. Bundle offers: one box of chicken bites + one stick of fishball costs \\(\\$4.20\\); 3 sticks of fishballs cost \\(\\$5.\\) Belinda wants to buy 43 boxes of chicken bites and 48 sticks of fishballs for a class party. What is the least amount of money that she has to pay?<br>\\(\\$\\)[?]","26000":"The table shows the total sales of three magazines in a month (Sports \\(\\$1950,\\) Science \\(\\$1448,\\) Math \\(\\$1850\\)). The bar graph shows the selling price of each magazine.<br>(a) Which magazine had the greatest number of copies sold? [?]<br>(b) The magazine vendor donated \\(\\dfrac{1}{4}\\) of the sales of the magazines to charity. How much was the donation? \\(\\$\\)[?]","26008":"Thomas had \\(\\$1200.\\)<br>He spent 35% of his money on food.<br>How much money did he spend on food?","26029":"What is the price of the refrigerator after adding 8% GST? The price before GST is \\(\\$2800.\\)<br><input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","26037":"The total cost of 2 identical files and 3 identical markers was \\(\\$15.\\) The total cost of 5 such files and 6 such markers was \\(\\$34.80.\\) What was the cost of 1 such marker?<br>[?]","26039":"Jason, Peter and Chris shared a sum of money in the ratio 5 : 9 : 2.<br>The difference between Peter's share and Jason's share is \\(\\$128.\\)<br>How much more money did Peter have than Chris?<br><input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","26046":"Using the parking charges at Value Shopping Mall, each statement below is either true, false or not possible to tell from the information given. For each statement, indicate true \/ false \/ not possible to tell: (i) Mr Lim paid \\(\\$5\\) when he parked his car from 6 p.m. till next morning 8.45 a.m. (ii) Mr Tan paid \\(\\$1.20\\) when he parked his car for 30 minutes. (iii) Some cars entered at 6 p.m. and exited at 6.50 p.m. on the same day. The parking charges for these cars were \\(\\$7.20.\\)","26062":"Ally and Bella had the same amount of money at first. After Ally spent \\(\\$20\\) and Bella spent \\(\\$80,\\) Ally had 3 times as much money as Bella. How much money did Bella have at first?","26074":"Mr Tan had \\(\\$8000.\\) He gave \\(\\$2000\\) to his wife and deposited the remaining amount in the bank. The bank paid 5% interest at the end of each year. How much money did he have in the bank at the end of 1 year? \\(\\$\\)[?]","26078":"The table shows the charges for bicycle rental: First hour \\(\\$6.00\\); every additional \\(\\dfrac{1}{2}\\) hour or part thereof \\(\\$2.50.\\) John and his brother rented a bicycle each from 2.00 p.m. to 4.15 p.m. How much did they pay altogether? \\(\\$\\)[?]","26115":"Matthew had \\(\\$25\\) more than Amy. When Amy gave Matthew \\(\\$20,\\) Matthew had 6 times as much money as Amy. How much money did Amy have at first?","26123":"Jill had \\(\\$400.\\)<br>She spent 20% of her money on books.<br>How much money did Jill spend on books? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","26145":"Amy has twice as many \\(\\$20\\) notes as \\(\\$50\\) notes in a box. The total value of the money in the box is \\(\\$6300.\\) How many \\(\\$20\\) notes are there in the box?","26171":"A sandwich costs \\(\\$6.05.\\) Leonard bought 4 such sandwiches and had \\(\\$1.85\\) left. How much money did he have before buying the 4 sandwiches?","26179":"Mrs Cheah bought an iron which included a GST of 7%. The price of the iron before GST was \\(\\$90.\\) How much did she pay for the iron? Ans: \\(\\$\\) [?]","26187":"The bar graph shows the number of pupils who donated to charity over 4 days. The bar representing Day 4 has not been drawn. Day 1 = 50, Day 2 = 60, Day 3 = 30. Over the 4 days, all the pupils donated a total amount of \\(\\$460.\\) Each pupil donated \\(\\$2.\\) How many pupils donated on Day 4? [?]","26195":"Cecily and Nadine shared the total cost of a handbag. Cecily paid \\(\\$39\\) more than \\(\\dfrac{4}{9}\\) of the total cost of the handbag. Nadine paid \\(\\$186.\\) How much did the handbag cost? Ans: \\(\\$\\) [?]","26196":"The table shows the charges for renting a bicycle: Mon to Fri 9 a.m. to 8 p.m. \\(\\$11\\) per hour; Sat and Sun 8 a.m. to 4 p.m. \\(\\$14\\) per hour, 4 p.m. to 7 p.m. \\(\\$15\\) per hour.<br>(a) Lei Xin rented a bicycle from 9 a.m. to 12 noon on Thursday. How much did she pay? Ans: \\(\\$\\) [?]<br>(b) On Sunday, Deric rented a bicycle and returned it at 5 p.m. He paid a total amount of \\(\\$71.\\) How many hours did he rent the bicycle? Ans: [?]","26200":"At Doughnut Empire, each doughnut is sold at \\(\\$1.10\\) or in a box of 11 for \\(\\$8.90.\\) Mrs Kor wants to buy exactly 208 doughnuts. What is the least amount of money that she needs to pay for the doughnuts? Ans: \\(\\$\\) [?]","26231":"Christopher has \\(\\$63.\\)<br>Box of 9 cupcakes \u2013 \\(\\$25\\)<br>1 cupcake \u2013 \\(\\$3\\)<br>What is the greatest number of cupcakes he can buy? [?]","26240":"A shop sold electronic devices was having a sale. 1st item at 15% discount, 2nd item at 20% discount. Price of 2nd item must be equal or lower than the price of 1st item. Mr Poh bought a tablet at \\(\\$230\\) and a laptop at \\(\\$550.\\) How much did he pay for the two items? [?]","26241":"A shop sale gives the 1st item 15% discount and the 2nd item 20% discount (2nd item priced equal or lower than the 1st). Mr Chian bought two identical smart watches. He received a total discount of \\(\\$147.\\) What was the price of one smart watch before the discount? [?]","26247":"At a school bookshop, erasers are only sold in packs of 4 and pencils are only sold in packs of 5. Erasers: 4 for \\(\\$1.99.\\) Pencils: 5 for \\(\\$2.99.\\) Mr Lim spent \\(\\$139.45\\) buying some erasers and pencils for Children's Day. He put all the erasers and pencils into bags. The ratio of the number of erasers to the number of pencils in each bag was 2 : 3. How many pencils did he buy? [?]","26360":"At first, Jason had \\(\\$210\\) and Ruth had \\(\\$154.\\) After they both spent an equal amount of money, the amount of money Jason and Ruth each had left were in the ratio 7 : 3. How much did each of them spend?<br>\\(\\$\\)[?]","26366":"Boxes A and B contain an equal number of coins. \\(\\dfrac{1}{4}\\) of the coins in Box A are 10-cent coins while the rest are 50-cent coins. \\(\\dfrac{1}{3}\\) of the coins in Box B are 10-cent coins while the rest are 20-cent and 50-cent coins. Given that the total value of all the coins in Box A is \\(\\$86.40,\\) find the total number of coins in Box B.<br>[?]","26367":"Boxes A and B contain 216 coins each. \\(\\dfrac{1}{3}\\) of the coins in Box B are 10-cent coins while the rest are 20-cent and 50-cent coins. The total value of all the coins in Box B is \\(\\$50.10.\\) Find the number of 20-cent coins in Box B.<br>[?]","26368":"Storewide Closing Down Sale: 1st item at 40% discount, 2nd item at 50% discount (price of the 2nd item must be equal to or lower than the price of the 1st item). Mary bought 2 different bags. The original price of one bag was \\(\\$280\\) while the other was \\(\\$499.\\) How much did she pay in total for both bags?<br>\\(\\$\\)[?]","26370":"Shops Q, R and S sell ice-cream in 2 sizes. A small tub is sold for \\(\\$12\\) and a big tub for \\(\\$18.\\) Shop Q sold 15 small and 9 big tubs; Shop R sold 10 small and 15 big tubs. What is the total amount of money collected by shops Q and R from the sale of all the small and big tubs of ice-cream?<br>\\(\\$\\)[?]","26371":"A small tub of ice-cream is sold for \\(\\$12\\) and a big tub for \\(\\$18.\\) Shop Q sold 15 small and 9 big tubs (24 tubs in total). Shop S sold as many tubs of ice-cream as Shop Q but collected \\(\\$66\\) more. How many small tubs of ice-cream did Shop S sell?<br>[?]","26392":"Alan, Ben, and Chandra shared the cost of a present for their cousin. Alan paid \\(\\dfrac{1}{5}\\) of the total amount. Ben paid \\(\\dfrac{3}{5}\\) of the total amount Alan and Chandra paid. Given that the present cost \\(\\$224,\\) how much did Chandra pay for the present? [?]","26409":"Raja and Muthu had a total of \\(\\$402.60.\\) Raja spent 75% of his money and Muthu spent 50% of his money. In the end, Muthu and Raja had the same amount of money left. How much money did they spend altogether? \\(\\$\\)[?]","26417":"Jia Hui's salary was \\(\\dfrac{4}{7}\\) of Aishah's salary. Jia Hui spent \\(\\$729.\\) Aishah did not spend any money. In the end, the amount of money Jia Hui had left to the amount of money Aishah had was 2 : 5. How much was Jia Hui's salary? \\(\\$\\)[?]","26422":"Mr Ho had a box of red, blue and green pens. \\(\\dfrac{1}{5}\\) of the pens were red, \\(\\dfrac{1}{4}\\) of the pens were blue and the rest were green pens. The cost of each pen is shown in the table. He sold all the pens and collected \\(\\$1141.\\)<br>Red: \\(\\$1.20\\)  Blue: \\(\\$1.60\\)  Green: \\(\\$1.80\\)<br>What fraction of the pens were green?","26423":"Mr Ho had a box of red, blue and green pens. \\(\\dfrac{1}{5}\\) of the pens were red, \\(\\dfrac{1}{4}\\) of the pens were blue and the rest were green pens. Each red pen costs \\(\\$1.20,\\) each blue pen costs \\(\\$1.60\\) and each green pen costs \\(\\$1.80.\\) He sold all the pens and collected \\(\\$1141.\\) How many pens did Mr Ho sell altogether? [?]","26424":"Mr Ho had a box of red, blue and green pens. \\(\\dfrac{1}{5}\\) of the pens were red, \\(\\dfrac{1}{4}\\) of the pens were blue and the rest were green pens. Each red pen costs \\(\\$1.20,\\) each blue pen costs \\(\\$1.60\\) and each green pen costs \\(\\$1.80.\\) Daphne bought 2 red pens and 4 green pens with \\(\\dfrac{2}{7}\\) of her pocket money. She bought blue pens with all her remaining pocket money. How many blue pens did Daphne buy? [?]","26460":"Shawn had \\(\\$90\\) more than Abigail. If Abigail gave Shawn \\(\\$15,\\) Shawn would have thrice as much money as Abigail. How much money did Shawn have at first? Ans: \\(\\$\\) [?]","26476":"The cost of 3 similar shirts and 2 similar pairs of jeans is \\(\\$315.\\) A pair of jeans cost thrice as much as a shirt. What is the cost of a shirt \\(\\$\\)[?] and a pair of jeans \\(\\$\\)[?]?","26478":"Amos, Kate and Simon each donated a sum of money to a fund-raising event. Kate and Simon donated a total of \\(\\$2310.\\) Amos and Simon donated a total of \\(\\$870.\\) Kate donated 5 times as much money as Amos. How much money did Simon donate? \\(\\$\\)[?]","26489":"There are three times as many \\(\\$2\\) notes as \\(\\$1\\) coins in a bag. The total amount in the bag is \\(\\$462.\\) How many \\(\\$1\\) coins are there?<br>[?]","26510":"In a shop, oranges are sold at 5 oranges for \\(\\$7.\\) Susan bought 30 oranges with all her money. To buy 20 papayas with the same amount of money, she will be short of \\(\\$18.\\) Given that the cost of each papaya is the same, how much does each papaya cost? \\(\\$\\)[?]","26520":"Oranges are sold in bags of 9. Each bag of oranges costs \\(\\$8.\\) Mrs Lim has \\(\\$114.\\) How many oranges can she buy at most?","26545":"Alice has some pieces of \\(\\$10\\) and \\(\\$50\\) notes. She has 6 more \\(\\$10\\) notes than \\(\\$50\\) notes. The total value of these notes is \\(\\$660.\\) How many \\(\\$50\\) notes does Alice have? [?]","26603":"Rahul bought an apple and a dozen of oranges for \\(\\$20\\)\\(y\\). Each orange cost \\(\\$3.\\) Find the cost of an apple.","26617":"At a bookshop, correction tapes are sold in packs of 2 or 5.<br>2 for \\(\\$1.80,\\) 5 for \\(\\$4.20.\\)<br>Jane needs to buy 9 correction tapes. What is the least amount of money she needs to pay?<br>\\(\\$\\)[?]","26618":"Raj had enough money to buy exactly 20 pens. During a sale, the price of each pen was reduced by \\(\\$0.15.\\) With the money he saved from the discount, he was able to buy 4 more pens and had \\(\\$0.20\\) left. What was the price of each pen during the sale?<br>\\(\\$\\)[?]","26620":"John bought some plants at an average price of \\(\\$7.\\) After buying another plant at \\(\\$21,\\) the average price became \\(\\$9.\\) Find the total number of plants John bought.<br>[?]","26635":"Xinli and Mark want to save \\(\\$164\\) to buy a gift. Xinli started saving earlier and she saves \\(\\$3\\) each day. When Xinli has saved for 20 days, Mark would have saved \\(\\$20.\\) When Xinli has saved for 26 days, Mark would have saved \\(\\$44.\\) Mark saves a same amount each day.<br>(a) How much does Mark save each day?<br>\\(\\$\\)[?]<br>(b) How many days would Xinli need to save so that they have exactly \\(\\$164\\) to buy the gift?<br>[?]","26636":"Shop X sells a dress at \\(\\$450.\\) Shop Y sells the same dress at 80% of the price at Shop X.<br>(a) What is the price of the dress in Shop Y?<br>\\(\\$\\)[?]<br>(b) During the Great Singapore Sale, Shops X and Y offered the same percentage discount on the dress. Shumei bought the dress in Shop Y and paid \\(\\$82.80\\) less than the discounted price in Shop X. What was the percentage discount offered?<br>[?] %","26675":"The price of 3 items sold at a bookshop are: Pencil \\((x + 60)\\)\u00a2, Pen \\(\\$2,\\) Ruler \\(3x\\)\u00a2. Joseph bought a pencil and a ruler. If \\(x = 60\\), how much did he spend? Give your answer in cents.<br>[?]","26686":"There were some 10\u00a2, 20\u00a2 and 50\u00a2 coins in a box. There were 34 more 10\u00a2 coins than 20\u00a2 coins. The total value of all the 10\u00a2 coins and 20\u00a2 coins was \\(\\$13.30.\\)<br>(a) How many 10\u00a2 coins were there in the box? [?]<br>\\(\\dfrac{2}{3}\\) of the 50\u00a2 coins were exchanged for \\(\\$1\\) coins which were then placed in the box. The total value of all the coins in the box did not change but the mass of all the coins in the box decreased by 172.8 g. The mass of each 50\u00a2 coin is 6.5 g and the mass of each \\(\\$1\\) coin is 7.6 g.<br>(b) What was the total number of 50\u00a2 and \\(\\$1\\) coins in the box after the exchange? [?]","26695":"William had \\(\\$100.\\) After buying 5 identical bags, he had \\$p left. Find the cost of each bag.","26697":"Nathanael spent 20% of his money on a cap. He used the rest of the money to buy a bag and a shirt. The bag cost \\(\\$15\\) more than the cap. The shirt cost \\(\\$165.\\) Find the cost of the bag.","26718":"P2 Q4. Elaine took a taxi from home to the shopping mall. Charges: First 1 km \\(\\$4.60\\); every additional 400 m or less \\(\\$0.26\\); every 45 seconds of waiting or less \\(\\$0.26.\\) The taxi travelled a total distance of 4.7 km and stopped once at a traffic light for 1 minute. How much did Elaine pay for her taxi fare?<br>Ans: \\(\\$\\)[?]","26719":"P2 Q5. George bought buns of 3 different flavours. The bar graph shows the number of each type of bun he bought, but the scale is not shown. The price of each coconut bun is \\(\\$1.80.\\) George paid \\(\\$50.40\\) for the coconut buns. How many kaya buns did he buy?<br>Ans: [?]","26720":"P2 Q6. Alice and Diana had some money each. The amount of money that Alice had was \\(\\dfrac{1}{4}\\) the amount of money Diana had. They wanted to buy the same dress each but Alice was short of \\(\\$28.40\\) and Diana was short of \\(\\$15.50.\\) How much was the dress?<br>Ans: \\(\\$\\)[?]","26721":"P2 Q7. Mr Lim bought 24 tubs of identical ice cream for \\(\\$360.\\) After a price increase in each tub of ice cream, he could only buy 20 tubs with the same amount of money. What was the percentage increase in the price of each tub of ice cream?<br>Ans: [?]%","26722":"P2 Q8. A carton of packet drinks costs \\(\\$12.\\) For every 15 cartons of packet drinks bought, a discount of 10% was given. Elisa bought a number of cartons of packet drinks for a charity event and she paid \\(\\$1296.\\) What was the most number of cartons Elisa bought?<br>Ans: [?]","26729":"P2 Q15. A group of tourists paid a total amount of \\(\\$2220\\) for the admission tickets to the Singapore Zoo. The ratio of the number of adults to children to senior citizens was 5 : 2 : 3. The ratio of the amount paid for all children to the amount paid for all senior citizens was 7 : 6. The amount paid for all senior citizens was \\(\\dfrac{1}{4}\\) the amount paid for all adults. Given that the price of an adult ticket was \\(\\$48,\\) find the total number of people in the group.<br>Ans: [?]","26751":"A notebook costs \\(\\$2.65\\) and a pencil costs \\(\\$0.90.\\)<br>(a) Find the total cost of one such notebook and one such pencil. \\(\\$\\)[?]<br>(b) Mrs Chia bought 200 such notebooks and 200 such pencils. How much did she pay altogether? \\(\\$\\)[?]","26766":"A baker had some tarts and cookies. He packed the tarts in boxes of 6 and the cookies in boxes of 10. He sold each box of tarts for \\(\\$28.80\\) and each box of cookies for \\(\\$22.20.\\) He sold 4 times as many boxes of tarts as boxes of cookies. He earned a total of \\(\\$2198.40\\) from the sale of all the boxes of tarts and boxes of cookies. How many tarts did he sell? [?]","26795":"A pen costs \\(\\$0.45.\\) What is the total cost of 80 such pens?<br>\\(\\$\\) [?]","26819":"A musical store offered 80 pianos at a 25% discount during a 5-day sale. During the sale, the discounted price of the piano was \\(\\$735.\\) After the sale, the remaining pianos were sold without discount. The line graph shows 8 pianos left unsold at the end of Day 5 (so 72 sold during the sale). What was the total amount of money collected from selling all the 80 pianos?<br>\\(\\$\\) [?]","26850":"Usual price of a toaster is \\(\\$80\\) and the sale price is \\(\\$56.\\) What is the percentage discount for the toaster? [?]%","26896":"Miss Lim travelled 3.2 km in a taxi from home to the mall. Her taxi fare was based on the charges shown.<br>First km: \\(\\$4.80.\\) Every additional 400 m or less: \\(\\$0.20.\\)<br>How much was her taxi fare?","26898":"Limin, Ming and Raju each had some money at first. Limin gave Ming \\(\\$2.50.\\) Ming then gave Raju \\(\\$1.80.\\) Raju then spent \\(\\$3\\) on a pen. In the end, they each had \\(\\$5.\\) What was the difference between the amount Limin and Raju had at first?","26946":"A bakery had this promotion: 1 donut for \\(\\$3.\\) Buy 5 donuts and get another 1 donut free! Buy 8 donuts and get another 2 donuts free!<br>Pete left the bakery with 127 donuts using the given promotion.<br>What was the least amount of money he had to pay for 127 donuts?","26952":"The line graph shows the cost for the amount of overseas mobile data used. (a) Ben used 1 unit of overseas mobile data during his trip. How much did Ben pay? Ans a) \\(\\$\\)[?]<br>(b) Ali paid \\(\\$28.\\) How many unit(s) of overseas mobile data did he use? Ans b) [?]","26959":"Esther paid \\(\\$46.60\\) for 10 similar pens and 12 similar files. The total price of a pen and a file was \\(\\$4.\\)<br>(a) What was the cost of 1 file? Ans a) \\(\\$\\)[?]<br>(b) What was the total cost of 15 pens and 12 files? Ans b) \\(\\$\\)[?]","26966":"Fruits sold: Apple 80, Orange 48, Pineapple 24, Mango 40, at prices Apple \\(\\$0.55,\\) Orange \\(\\$0.70,\\) Pineapple \\(\\$2.20,\\) Mango \\(\\$1.40.\\) From the sale of which type of fruit did the shop collect the most money?","27009":"The usual price of a printer is \\(\\$489,\\) excluding GST. Mr Tan bought the printer at a discount of 25%. He had to pay 8% GST on the discounted price. How much did he pay for the printer? \\(\\$\\)[?]","27019":"3 notebooks and 7 pens cost \\(\\$28.90.\\) 5 notebooks and 2 pens cost \\(\\$18.20.\\) What is the cost of 1 pen? [?]","27022":"Miss Lim spent \\(\\$786\\) to buy a total of 60 M-size and L-size skirts. One M-size skirt cost \\(\\$12\\) and one L-size skirt cost \\(\\$15.\\) How many M-size skirts did she buy? [?]","27027":"Mitra had some \\(\\$5\\) notes and \\(\\$50\\) notes. He had as many \\(\\$5\\) notes as \\(\\$50\\) notes. The total value of the notes was \\(\\$880.\\) How many \\(\\$50\\) notes did he have? [?]","27036":"Lilin had \\(\\$12080\\) and Maia had \\(\\$1760.\\) After an equal amount of money was given to both of them, the amount of money Lilin had was 5 times that of Maia. How much money did each of them receive? [?]","27038":"Mrs Yang baked some macaroons.<br>\\(\\dfrac{3}{4}\\) of them were chocolate macaroons and the rest were strawberry macaroons.<br>She sold \\(\\dfrac{5}{6}\\) of the chocolate macaroons and \\(\\dfrac{3}{8}\\) of the strawberry macaroons.<br>After that, she had 81 macaroons left.<br>(a) How many macaroons did Mrs Yang bake? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/><br>(b) She sold the macaroons at 3 for \\(\\$7.\\)<br>How much did she collect from the sale of the macaroons? <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/>","27055":"The table shows the prices of muffins and cookies at Marvel Cafe and Simply Cafe.<br>Marvel Cafe: Muffin \\(\\$4.00,\\) Cookie \\(\\$1.60.\\) Simply Cafe: Muffin \\(\\$3.20,\\) Cookie \\(\\$2.00.\\)<br>(a) Mrs Lim bought 16 muffins and 20 cookies from Simply Cafe. How much did she pay in all? \\(\\$\\)[?]<br>(b) John bought muffins and cookies from Marvel Cafe. Sally bought muffins and cookies from Simply Cafe. Both John and Sally bought the same number of muffins. John bought 5 cookies and Sally bought 8 cookies. They paid the same amount of money. How many muffins did each of them buy? [?]","27066":"A fan cost \\(\\$55.\\) Elle bought it at 40% discount. How much was the discount?<br>\\(\\$\\)[?]","27115":"The usual price of a kilogram of flour is \\(\\$1.80.\\) During a sale, each kilogram of flour cost 30 cents cheaper.<br>How much did Karen pay for 31 kg of flour during the sale? \\(\\$\\)[?]","27116":"The usual price of a kilogram of flour is \\(\\$1.80.\\) During a sale, each kilogram of flour cost 30 cents cheaper.<br>If Karen paid \\(\\$23.40\\) to buy some flour at the usual price, how much more flour can she buy during the sale? [?] kg","27119":"The line graph shows Cynthia's savings from March to July. Cynthia's average monthly savings from March to August is \\(\\$75.\\) How much was his savings in August? \\(\\$\\)[?]","27131":"12 macaroons costs \\(\\$59.80.\\) How much will 36 such macaroons cost?<br>\\(\\$\\)[?]","27135":"Winnie paid \\(\\$24.50\\) for 3 large bottles and 5 small bottles. With the remaining money, she could not buy another large bottle as she was short of \\(\\$0.90.\\) She then bought another small bottle and had \\(\\$1.40\\) left. How much money did Winnie have at first?<br>\\(\\$\\)[?]","27148":"Marie was given some money to spend at a carnival. She asked for \\(\\$20\\) more as she needed more money. After she spent \\(\\$40.85,\\) she had \\(\\$5.35\\) left. How much did Marie have at first? [?]","27154":"There are three laptops for sale. The total cost of laptop A and laptop B is \\(\\$2215.\\) The total cost of laptop B and laptop C is \\(\\$3709.\\) Laptop C costs four times as much as laptop A.<br>a) How much more does laptop C cost than laptop A? [?]<br>b) How much does laptop B cost? [?]","27162":"The ratio of Clara's money to Devi's money is 3 : 8. Clara has \\(\\$21.\\) How much money does Devi have? \\(\\$\\)[?]","27169":"Sandra was given some money to buy some books. If she bought 13 books, she would need \\(\\$9\\) more. If she bought 9 books, she would be left with \\(\\$15.\\) How much did each book cost? \\(\\$\\)[?]","27177":"Mary spent \\(\\$50\\) of her weekly allowance of \\(\\$200.\\) What percentage of her weekly allowance did she spend?<br>[?]%","27214":"4 mangoes and 3 watermelons cost \\(\\$54.\\)<br>3 watermelons cost as much as 2 mangoes.<br>Find the cost of a watermelon.<br><input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","27226":"Ning Hui saved the same amount of money every week for 9 weeks. With the total amount of money saved in the 9 weeks, she bought a pair of shoes that cost \\(\\$142.35.\\) She had \\(\\$7.50\\) left in the end. How much money did Ning Hui save every week? \\(\\$\\)[?]","27232":"Olivia and Patricia bought some gift cards at the prices shown: Small cards are 3 for \\(\\$5\\); Large cards are 2 for \\(\\$7.\\)<br>(a) Olivia spent a total of \\(\\$36\\) on some small and large gift cards. How many small gift cards did Olivia buy? [?]<br>(b) Patricia bought an equal number of small and large gift cards. She spent \\(\\$33\\) more on the large cards. How many small and large gift cards did Patricia buy altogether? [?]","27249":"Jackson had \\(\\$20.\\) He spent \\(\\$8\\) on a burger.<br>What percentage of his money did he spend on the burger?","27259":"A clothing store has a sale. The original price of a pair of pants was \\(\\$75.\\) The price of the pair of pants during the sale was \\(\\$60.\\) Find the percentage decrease in price. [?]","27271":"A handbag cost \\(\\$250.\\) Kelly bought the bag and was given a 20% discount. She had to pay 8% GST on the discounted price. How much did she pay for the handbag inclusive of the GST?","27277":"After an increase of \\(\\$80,\\) Daniel's monthly allowance became \\(\\$400.\\) What is the percentage increase in his allowance? [?]","27282":"Mr Chan bought a laptop and a printer from a shop. He paid a total of \\(\\$1824\\) for these two items after discount. The total discount given for the laptop and printer was \\(\\$246.\\) The laptop's usual price is \\(\\$1290\\) with a discount of 10% given. Find the percentage discount given for the printer. [?]","27335":"A lollipop cost \\(\\$0.70.\\) There were 80 lollipops in a box. Janie bought 8 such boxes of lollipops for her class party. How much did she spend on the lollipops?","27358":"Nurul and Peili went shopping together with a total sum of \\(\\$60.\\) Nurul spent twice as much as Peili. The amount Peili had left was \\(\\$7\\) more than what she had spent. She had twice as much money left as Nurul. How much money did Nurul have at first? \\(\\$\\)[?]","27401":"Shaun had \\(\\$100.\\) He spent \\(\\$60\\) on a bag and 10% of his remaining money on a shirt. What percentage of his money did Shaun spend in total?","27413":"Aisha bought a pen and a notebook during a sale from a shop. She paid a total of \\(\\$6\\) for both items after discount. The usual price of the notebook is \\(\\$5.\\) There is a 20% discount on all items. Find the price of the pen after the discount. [?]","27425":"Mr Lim had \\(\\$50.\\) After buying 4 identical ties, he had \\$x left. How much did Mr Lim pay for each tie?","27435":"Devi has \\(\\$10.\\) She spends 95\u00a2 on a bun and 60\u00a2 on a drink. How much money does Devi have left?<br>Ans: \\(\\$\\) [?]","27442":"Sale price \\(\\$48.\\) Usual Price: \\(\\$60.\\) What is the percentage discount for the bag shown?<br>Ans: [?]%","27449":"Shanti took a taxi from home to her office. Her taxi fare was based on the charges shown: First 1 km \\(\\$3.20\\); Every additional 400 m or less \\(\\$0.22\\); Every 45 seconds of waiting or less \\(\\$0.22.\\) The taxi stopped once at a traffic light for 1 min and travelled a total distance of 5.8 km to reach Shanti's office. How much was her taxi fare?<br>Ans: \\(\\$\\) [?]","27477":"Marcus had \\(\\$120.\\) He spent \\(\\$24.\\) What percentage of his money did he spend?","27482":"The usual price of a vacuum cleaner was \\(\\$3100.\\) During a sale, it was sold at a discount of 20%. What was the price of the vacuum cleaner during the sale?<br>Ans: \\(\\$\\) [?]","27495":"The parking charges at a mall are: First Hour \\(\\$2.50\\); Every additional half hour or part thereof \\(\\$1.30.\\) Josh paid \\(\\$9\\) for parking at the shopping mall. At most, how long did he park his car there?","27510":"Esther spent \\(\\$558\\) on 4 similar skirts and 3 similar dresses. She wanted to buy another similar dress but she was short of \\(\\$53.\\) In the end, she bought another similar skirt and had \\(\\$28\\) left. How much more did each dress cost than each skirt?<br>Ans: \\(\\$\\) [?]","27511":"Esther spent \\(\\$558\\) on 4 similar skirts and 3 similar dresses. She wanted to buy another similar dress but she was short of \\(\\$53.\\) In the end, she bought another similar skirt and had \\(\\$28\\) left. How much money did Esther have at first?<br>Ans: \\(\\$\\) [?]","27542":"Tickets for a theme park were sold at 20% discount. The price of 4 tickets before discount was \\(\\$196.\\) What was the discount for one ticket? \\(\\$\\)[?]","27546":"2 soccer balls cost as much as 3 volleyballs. Mr Lim bought 2 soccer balls and 4 volleyballs for \\(\\$266.\\) Find the total cost of 2 such soccer balls. \\(\\$\\)[?]","27548":"The total amount of money that Alan, Betty and Kalen has is \\(\\$34.20.\\) The ratio of the amount of money Alan has to the amount of money Betty has is 2 : 3. Kalen has \\(\\$10.60\\) less than Betty. How much money does Kalen have? \\(\\$\\)[?]","27556":"At a charity bake sale, \\(\\dfrac{3}{10}\\) of the people bought 2 muffins, \\(\\dfrac{11}{20}\\) bought 5 muffins and the rest (\\(\\dfrac{3}{20}\\)) bought 7 muffins. The number of people who bought 2 muffins were 147 more than those who bought 7 muffins. Each muffin was sold at \\(\\$1.50.\\) How much money was collected from the people who only bought 2 muffins? \\(\\$\\)[?]","27558":"Ali received \\(\\$500\\) as a prize. He gave \\(\\$225\\) to his parents and saved \\(\\$123.\\) He used the remaining money to pay for a total of 24 cupcakes and tarts. Cupcakes were sold at \\(\\$5\\) each and tarts were sold at \\(\\$7\\) each. How many tarts did Ali buy? [?]","27559":"A company ordered an equal number of large tubs and small tubs of ice-cream. 1 large tub costs \\(\\$5\\); 3 small tubs cost \\(\\$8.\\) They paid a total of \\(\\$112\\) more for the large tubs of ice-cream. How many tubs of ice-cream did the company order altogether? [?]","27560":"A company ordered an equal number of large tubs and small tubs of ice-cream. 1 large tub costs \\(\\$5\\); 3 small tubs cost \\(\\$8.\\) They paid \\(\\$112\\) more for the large tubs. The company ordered 48 large tubs and 48 small tubs. How much did the company pay for all the small tubs of ice-cream? \\(\\$\\)[?]","27574":"Andy received \\(\\$500.\\) He gave \\(\\$70\\) to his mother. What percentage of the money did Andy give to his mother?","27599":"The usual price of a tour package to Korea was \\(\\$2380.\\) During a promotion, Mrs Lee bought the tour package at a discount of 15%. In addition, she had to pay a 9% GST on the discounted price. How much did she pay for the tour package?<br>Ans: \\(\\$\\)[?]","27607":"The ratio of the number of boys to the number of girls at an amusement park was 5 : 7. After 60 boys entered the amusement park, there were equal numbers of boys and girls.<br>(a) How many boys were there in the amusement park at first? [?]<br>(b) In October, after a discount of 25%, the entrance ticket to the amusement park was \\(\\$54.\\) A further discount of \\(\\$4.50\\) was given to a child who was born in October. What is the total percentage discount given to a child who was born in October? Ans: [?]%","27640":"Mr Tan and his wife went to the movies and both of them are above 65 years old.<br>There is a 20% discount for senior citizens aged above 65 years old.<br>The usual price is \\(\\$12.50.\\)<br>How much did they pay for the movie tickets altogether? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","27644":"The table shows the overseas postage rate to Malaysia and Brunei: up to 20 g \\(\\$0.80\\); up to 50 g \\(\\$1.00\\); up to 100 g \\(\\$1.50\\); for every additional 100 g or part thereof \\(\\$1.20.\\) Mrs Chan sent a set of cards weighing 260 g to her friend in Malaysia. How much did she pay for sending the cards? [?]","27647":"Sandy spent \\(\\dfrac{5}{7}\\) of her money and Kevin spent \\(\\dfrac{2}{5}\\) of his money.<br>After that, they had the same amount of money left.<br>The total amount of money left was \\(\\$180.\\)<br>How much did they have altogether at first? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","27648":"Mr Sunil's salary was \\(\\$4250.\\) He donated part of it to Charity A and Charity B in the ratio of 4 : 1. The amount he donated to Charity A was \\(\\$340.\\)<br>(a) How much did he donate to both charities? [?]<br>(b) Find the percentage of Mr Sunil's salary that was donated to both charities. [?]","27649":"The table shows the prices of tickets for a concert: Adult \\(\\$23,\\) Child \\(\\$15.\\) The number of adult tickets sold was 6 times as many as the number of child tickets sold. A total of \\(\\$20\\) 196 was collected from the sale of tickets. How much was collected from the sale of the adult tickets? [?]","27650":"Miss Lim bought some identical notebooks from the bookshop. For every 4 notebooks bought, she received the 5th notebook free. Each notebook cost \\(\\$2.45.\\) She gave the cashier \\(\\$65\\) and received a change of \\(\\$3.75.\\) How many notebooks did Miss Lim get from the bookshop altogether? [?]","27663":"James had \\(\\$200.\\) He spent \\(\\$70\\) on a wallet.<br>What percentage of his money did he spend on the wallet?","27682":"The table shows the local postage rates in Singapore.<br>First 30 g: \\(\\$0.30\\); Next 50 g: \\(\\$0.50\\); Every additional 40 g or less: \\(\\$0.60.\\)<br>Mr Lim needs to send a parcel that weighs 138 g. How much does he need to pay? \\(\\$\\)[?]","27685":"Three friends shared the total cost of 48 apples in the ratio 5 : 2 : 1. The apples are sold at 12 apples for \\(\\$10.\\) What was the cost for the largest share? \\(\\$\\)[?]","27687":"The usual price of a watch was \\(\\$780.\\) During a sale, it was sold at 20% discount. How much was the discount?<br>\\(\\$\\)[?]","27691":"Ali and Eva had the same amount of money at first. Later on, Ali received another \\(\\$550\\) and Eva spent \\(\\$260.\\) Ali had 4 times as much money as Eva in the end. How much money did each of them have at first?<br>\\(\\$\\)[?]","27700":"The total cost of a dress and a skirt was \\(\\$239.\\) Mrs Chen wanted to buy the dress but she was short of \\(\\$40.\\) In the end, she bought the skirt and had \\(\\$25\\) left. (a) How much more did the dress cost than the skirt? \\(\\$\\)[?]<br>(b) How much money did Mrs Chen have at first? \\(\\$\\)[?]","27712":"Jonathan had \\(\\$300.\\) He spent \\(\\$60.\\) What percentage of the money did he spend?","27716":"Charles had five times as much money as Ken at first. After Charles spent \\(\\$50\\) and Ken received another \\(\\$62,\\) they had an equal amount of money. How much money did Ken have at first?","27741":"A rectangular garden is \\(25\\dfrac{1}{4}\\) m long and \\(18\\dfrac{1}{2}\\) m wide. A fence is built along its 4 edges. Each meter of fencing costs \\(\\$32.\\) Find the total cost of fencing. \\(\\$\\)[?]","27745":"Lydia and Mary have a total of 129 coins.<br>Lydia has 35 coins more than Mary.<br>(a) How many coins does Mary have? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/><br>(b) Mary only has 50-cent coins or 20-cent coins.<br>The total amount of money she has is \\(\\$15.10.\\)<br>How many 50-cent coins does Mary have? <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/>","27747":"David gets \\(\\$15\\) more allowance than Edward each week. Every week, each of them spends \\(\\$25\\) and saves the rest. When David saves \\(\\$216,\\) Edward saves \\(\\$96.\\) How much allowance does David get each week? \\(\\$\\)[?]","27750":"Mrs Lee bought some cupcakes and cookies. The cupcakes were sold at 8 for \\(\\$25\\) and the cookies were sold at 12 for \\(\\$30.\\) Mrs Lee bought an equal number of cupcakes and cookies. She spent a total of \\(\\$540\\) for all the cupcakes and cookies. How many cookies did Mrs Lee buy? [?]","27757":"Muthu had \\(\\$220.\\)<br>He spent 20% of his money.<br>How much money did he spend?","27776":"A tin of paint costs \\(\\$24.50.\\) Steve needs to buy 7 tins of paint, but he is short of \\(\\$5.\\) How much money does Steve have?<br>\\(\\$\\)[?]","27835":"Rosnah spent \\(\\$739.50\\) on some pillows and towels. She bought 3 more pillows than towels. A pillow cost \\(\\$22.50\\) and a towel cost \\(\\$9.50.\\)<br>(a) Find the cost of 3 pillows.<br>(b) How many towels did she buy?<br>(a) \\(\\$\\)[?]<br>(b) [?] towels","27838":"Zhi Wei earns \\(\\$2400\\) each month. He spends some of his salary and saves the rest. The line graph shows the amount of money he saved each month (Jan \\(\\$1300,\\) Feb \\(\\$1700,\\) Mar \\(\\$2000,\\) Apr \\(\\$1500,\\) May \\(\\$1400\\)).<br>(a) In which month did Zhi Wei spend the most amount of money?<br>(c) What percentage of his monthly salary did he spend in May? Give your answer correct to the nearest 1%.<br>(a) [?]<br>(c) [?]","27839":"Zhi Wei earns \\(\\$2400\\) each month and saves the rest of his salary. In March he saved \\(\\$2000.\\) What fraction of his monthly salary did he save in March? Give your answer in the simplest form.","27920":"Sanjeev has \\(\\$200.\\) He gave \\(\\$80\\) to his sister. What percentage of his money did Sanjeev give to his sister?","27940":"The table shows the rental rate for a bicycle: First hour \\(\\$8\\); for every additional half hour or part thereof \\(\\$2.50.\\) Mr Chua rented a bicycle from 11.30 a.m. to 2.10 p.m. How much did he pay for the bike rental in total?<br>Ans: \\(\\$\\)[?]","27961":"The original price of each fan is \\(\\$35.\\) During a sale, Fan A gets \\(\\$6.80\\) off the original price and Fan B gets a 20% discount. Which fan was cheaper after the discount? How much is it cheaper than the other fan?","27962":"The original price of each fan is \\(\\$35.\\) During a sale, Fan A gets \\(\\$6.80\\) off the original price and Fan B gets a 20% discount. Jefferson wanted to buy the cheaper fan on discount. He had to pay an additional 9% GST on the discounted price. How much did Jefferson have to pay for the fan in total?<br>Ans: \\(\\$\\)[?]","27963":"A box of biscuit is sold at \\(\\$5.50.\\) For every 5 boxes of biscuits bought, 2 boxes of biscuits are given free. Nadiah bought some boxes of biscuits and paid a total of \\(\\$126.50.\\) How many boxes of biscuits did she have?<br>Ans: [?]","27964":"A box of biscuit is sold at \\(\\$5.50.\\) For every 5 boxes of biscuits bought, 2 boxes of biscuits are given free. In every box of biscuits, there are 10 pieces of biscuits. Daryl needs to get 485 pieces of biscuits. What is the least amount of money he has to pay?<br>Ans: \\(\\$\\)[?]","27980":"Devi had some 10-cents, 20-cents and 50-cents coins in a box.<br>There were twice as many 20-cent coins as 50-cent coins in the box.<br>The number of 10-cent coins was the same as the number of 50-cent coins.<br>The total value of all her coins was \\(\\$23.\\)<br>How many coins were there in the box altogether?","27999":"The rate to send letters to a country is: first 20 g costs \\(\\$0.85,\\) every additional 10 g or part thereof costs \\(\\$0.25.\\) Ben sent a letter that weighed 43 g. How much did Ben pay for sending the letter? Give your answer in dollars.<br>\\(\\$\\)[?]","28008":"Mrs Chan bought an equal number of pots and pans. The ratio of the cost of a pot to the cost of a pan was 3 : 2. The average price of a pot and a pan was \\(\\$11.25.\\) Mrs Chan paid \\(\\$45\\) less for the pans than the pots. How many pans did Mrs Chan buy?<br>[?]","28026":"The average daily allowance of 5 students is \\(\\$4.\\) Another student joined in and their average daily allowance increased to \\(\\$4.30.\\) How much daily allowance did the last student receive?","28034":"Mrs Tan bought 2 kg of coffee beans at the price shown: Coffee beans 200 g for \\(\\$3.75.\\)<br>How much did Mrs Tan pay for her coffee beans? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","28040":"The table shows the carpark rates at Sands Mall: For the first hour \\(\\$7\\); For every additional \\(\\dfrac{1}{2}\\) h or part thereof \\(\\$3.\\) Casper parked his car at Sands Mall from 11 a.m. to 1.20 p.m. How much did he pay for parking? [?]","28057":"Chloe and Arthur have the same number of coins.<br>Chloe has a number of fifty-cent coins and 27 twenty-cent coins.<br>Arthur has twice as many twenty-cent coins as Chloe.<br>(a) Who has more money and how much more? (b) Given that Chloe has \\(\\$33.40,\\) how many fifty-cent coins does Arthur have? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","28067":"Ahmad had \\(\\$200.\\) He spent \\(\\$60\\) on a bag and saved the rest of the money. What percentage of his money did Ahmad save?","28092":"Mr Low took a taxi from home to his office. His taxi fare was based on the charges shown: First 1 km costs \\(\\$4.40\\); every additional 500 m or less costs \\(\\$0.35.\\) Mr Low travelled 3.4 km. How much was his taxi fare? [?]","28093":"Mdm Su paid \\(\\$26.40\\) for 15 pairs of scissors and 9 pencils. The total cost of a pair of scissors and a pencil was \\(\\$2.40.\\) Find the cost of a pair of scissors. [?]","28107":"Carol bought a dress which included a GST of 9%. The price of the dress before GST was \\(\\$70.\\) How much did Carol pay for the dress?<br>Ans: \\(\\$\\)[?]","28110":"The usual price of a dining table was \\(\\$950.\\) During a sale, all items were sold at 20% discount. What was the price of the dining table after the discount?<br>Ans: \\(\\$\\)[?]","28114":"The total cost of a bag, a watch and a jacket was \\(\\$332.10.\\) The watch cost \\(\\$13.60\\) less than the jacket. The watch cost thrice as much as a bag. What was the cost of the jacket?<br>Ans: \\(\\$\\)[?]","28129":"Nancy bought some pens at \\(\\$1.85\\) each and some correction tapes at \\(\\$3.50\\) each. She bought 16 more pens than correction tapes and spent a total of \\(\\$147.30.\\) How many correction tapes did she buy? [?]","28145":"Mrs Tan bought some notebooks and pencils for her students. The ratio of number of notebooks to the number of pencils that she bought was 2 : 3. Each notebook cost \\(\\$1.20\\) and each pencil cost \\(\\$0.75.\\) Altogether, she paid \\(\\$83.70.\\) How many notebooks did she buy? [?]","28186":"At a shop, 1 T-shirt and 2 similar pairs of pants cost \\(\\$180.\\) 3 such T-shirts and 2 such pairs of pants cost \\(\\$320.\\) Find the cost of 1 pair of pants.<br>\\(\\$\\)[?]","28202":"The graph shows the number of four types of chocolate bars sold in a supermarket. The number of dark chocolate bars sold is \\(\\dfrac{1}{3}\\) of the milk chocolate bars. Each bar of chocolate was sold at \\(\\$2.\\) How much did the supermarket earn from the sale of the chocolate bars?<br>\\(\\$\\)[?]","28222":"The table below shows the bicycle rental charges at a park. First hour \\(\\$3.50\\); every additional 30 min or part thereof \\(\\$1.00.\\) Josh collected his bicycle at 1:30 pm. After cycling, he returned his bicycle and paid \\(\\$10.50.\\) At what time could he have returned his bicycle?","28244":"A file and 3 identical pens cost \\(\\$29.20.\\) 2 such files and 8 such pens cost \\(\\$76.20.\\) What was the cost of 1 such pen? Ans: \\(\\$\\) [?]","28245":"The bar graph shows the different flavours of ice cream sold by a shop (Chocolate 42, Pistachio 36, Strawberry 57, Vanilla 24). The table shows the prices per cup: Chocolate \\(\\$3.50,\\) Pistachio \\(\\$4.20,\\) Strawberry \\(\\$2.50,\\) Vanilla \\(\\$3.80.\\)<br>(b) Which ice cream flavour did the shop earn the most money? From the sale of this ice cream flavour, what was the amount of money earned? Flavour: [?]; Amount: \\(\\$\\) [?]","28246":"Ken and Helen went shopping with a total amount of \\(\\$345.\\) Ken spent twice as much as Helen. The amount Helen had left was \\(\\$26\\) more than what she had spent. She had twice as much money left as Ken.<br>(a) How much money did Ken spend? Ans: \\(\\$\\) [?]<br>(b) How much money did Helen have at first? Ans: \\(\\$\\) [?]","28264":"A farmer harvested 240 apples.<br>He threw away 20 spoiled apples.<br>He then packed the remaining apples in packs of 5.<br>Each pack was sold for \\(\\$10.\\)<br>Which of the following represents the correct way to find how much the farmer earned?","28271":"Erasers are sold at 10 for \\(\\$5\\) and pens are sold at 8 for \\(\\$6.\\) Julius bought an equal number of erasers and pens for \\(\\$150.\\) How many pens did he buy?<br>[?]","28279":"A dishwasher costs \\(\\$1300.\\) During a sale, David bought the dishwasher at a discount of 20%. How much was the discount?<br>Ans: \\(\\$\\)[?]","28298":"Joshua had \\(\\$280.\\) He spent \\(\\$70\\) on some books. What percentage of his money did Joshua spend on the books?","28312":"A bakery was having a special offer: Buy 6 donuts, get 2 additional donuts free. Nora needed 32 donuts for a party. With the special offer, she could save \\(\\$11.60.\\) What was the price of 1 donut without the special offer? Ans: \\(\\$\\) [?]","28316":"The poster shows the rental rate at a bicycle rental shop. First hour \\(\\$7\\); each additional \\(\\dfrac{1}{2}\\) h \\(\\$2.50.\\) Mike rented a bicycle for \\(3\\dfrac{1}{2}\\) h. How much did he pay for his bicycle rental? Ans: \\(\\$\\) [?]","28322":"At a shop, jackets and shirts were sold. Jacket usual price \\(\\$99\\); Shirt usual price \\(\\$52.\\)<br>(a) Jasmine bought one jacket at the usual price. The GST is 9%. How much is the GST? Ans: \\(\\$\\) [?]<br>(b) Asher bought three shirts at a discount of 15%. How much was the total discount for the three shirts he bought? Ans: \\(\\$\\) [?]","28329":"Esther and Jessie went shopping together with a total sum of \\(\\$261.\\) Esther spent twice as much as Jessie. The amount Jessie spent was \\(\\$9\\) more than what she had left. She had twice as much money left as Esther.<br>(a) How much did Jessie spend? Ans: \\(\\$\\) [?]<br>(b) How much money did Esther have at first? Ans: \\(\\$\\) [?]","28341":"Ann, Ben and Cara had some money. Ann and Ben had \\(\\$2661.\\) Ben and Cara had \\(\\$5874.\\) Cara had 4 times as much money as Ann. How much money did Ben have?<br>\\(\\$\\)[?]","28349":"The cost of 2 pens and 4 files is \\(\\$23.90.\\) The cost of a file is \\(\\$1.40\\) more than the cost of a pen. Find the cost of a pen. [?]","28353":"Daryl and Ben had an equal amount of money at first. Each day, Daryl spent \\(\\$5.50\\) and Ben spent \\(\\$3.20.\\) After some days, Daryl had \\(\\$95.20\\) left and Ben had \\(\\$132\\) left. How much money did each of them have at first? [?]","28360":"The pie chart shows how Mrs Chin spent her money, with Food being 36%. Mrs Chin spent a total of \\(\\$350.\\) How much money did she spend on food?<br>Ans: \\(\\$\\)[?]","28361":"There is a sale at ABC Fashion: the 1st dress is at 10% discount and the 2nd dress is at 15% discount, where the price of the 2nd dress should be equal to or lower than the price of the 1st dress. Cassandra bought two dresses with usual prices of \\(\\$60\\) and \\(\\$89.\\) How much did she pay for the two dresses after the discount?<br>Ans: \\(\\$\\)[?]","28364":"At a bakery, big donuts are sold at 3 for \\(\\$7\\) and mini donuts at 4 for \\(\\$5.\\) Theo bought an equal number of big donuts and mini donuts. He spent \\(\\$91\\) more on the big donuts than the mini donuts. How many donuts did he buy in all?<br>Ans: [?]","28380":"The postal charges for sending mails to a country are: up to 20 g \\(\\$0.75\\); up to 50 g \\(\\$1.20\\); up to 100 g \\(\\$1.95\\); up to 250 g \\(\\$4.\\) Ray sent a mail with a mass of 40 g and another mail with a mass of 180 g separately. How much did he pay for the postage?","28382":"The bar graph shows the number of cupcakes sold from Monday to Friday.<br>Each cupcake is sold at \\(\\$4.\\)<br>What is the difference between the amount collected on Tuesday and Thursday?","28397":"Mei Ling baked 1200 cookies and muffins for a charity sale. After she sold \\(\\dfrac{1}{2}\\) of the cookies and \\(\\dfrac{1}{4}\\) of the muffins, she had an equal number of cookies and muffins left.<br>(a) How many cookies did she sell? Ans: [?]<br>(b) Each cookie costs \\(\\$2.10\\) and each muffin costs \\(\\$3.50.\\) How much did Mei Ling raise for the charity sale? Ans: \\(\\$\\) [?]","28405":"Susan puts 2 coins into her coin box every day. Each coin was either a 20-cent coin or a 50-cent coin. Every 5 days, her father added a \\(\\$1\\) coin to her coin box. After 210 days, the total value of the coins in the coin box was \\(\\$225.\\)<br>(a) How many coins were there altogether? Ans: [?]<br>(b) How many of her coins were 50-cent coins? Ans: [?]","28420":"The table shows museum admission prices: Adult \\(\\$15,\\) Child \\(\\$7,\\) Package A (1 adult and 1 child) \\(\\$20,\\) Package B (2 adults and 1 child) \\(\\$35.\\) Mr Liew bought tickets for 4 adults and 3 children. What was the least amount that he could have paid?<br>\\(\\$\\)[?]","28430":"The table shows the rates for renting roller blades: 1st hour costs \\(\\$10.00\\); every subsequent \\(\\dfrac{1}{2}\\) hour or part thereof costs \\(\\$6.50.\\) Tim rented a pair of roller blades for \\(3\\dfrac{3}{4}\\) hours. How much did he pay in total? [?]","28460":"The parking charges at a car park are: First hour \\(\\$2.20\\); every additional \\(\\dfrac{1}{2}\\) hour or part thereof \\(\\$1.30.\\) Mr Tan entered the car park at 8.00 am and left the car park at 10.15 am. How much did he have to pay? Ans: \\(\\$\\) [?]","28463":"Belinda bought 3 identical books and 4 identical pens for \\(\\$43.70.\\) The total cost of a book and a pen is \\(\\$13.80.\\) How much does each pen cost? Ans: \\(\\$\\) [?]","28466":"The pie chart shows the amount of money raised by the students in a donation drive (P4 \\(\\dfrac{1}{10}\\), P2 \\(\\dfrac{1}{5}\\), P1 \\(\\$3268,\\) P3, P5, P6). The students in P1 raised the same amount of money as the students in P4. How much did the students in all 6 levels raise? Ans: \\(\\$\\) [?]","28468":"The usual price of a water bottle at Shop A and Shop B was \\(\\$20.\\) Shop A: 20% off all bottles. Shop B: buy 2 bottles, get the 3rd at 50% off. Jimmy buys 8 water bottles from the cheaper shop. How much more would he save as compared to the other shop? Ans: \\(\\$\\) [?]","28490":"Madam Siti has some money. If she buys 12 plates, she will be short of \\(\\$45.\\) If she buys 9 plates, she will have \\(\\$15\\) left. How much money does she have?<br>Ans: \\(\\$\\)[?]","28493":"The table shows the cost of sending a parcel to Town A: First 300 g costs \\(\\$2\\); every additional 50 g or part thereof costs \\(\\$0.35.\\) How much does it cost to send a parcel that has a mass of 480 g? [?]","28499":"Linda bought 12 melons and 4 pears from a fruit stall. Brenda bought 4 melons and 12 pears from the same stall. Brenda paid \\(\\$28.80\\) less than Linda. Each pear cost \\(\\$1.80.\\) How much did a melon cost? [?]","28513":"Sally had some money. She used \\(\\$50\\) to buy a book, \\(\\$100\\) to buy a bag and was left with \\(\\$250.\\) What percentage of her money did she use altogether?","28531":"Mr Tan received a total of \\(\\$1345\\) for all the scrap metal he sold. First 60 kg: \\(\\$5\\) per kg; each additional kg: \\(\\$5.50.\\) What is the total mass of scrap metal sold by Mr Tan? Ans: [?] kg","28540":"A bakery delivered 300 cakes to a hotel. It charged the hotel \\(\\$50\\) for each cake in good condition. For every spoiled cake, the bakery had to pay the hotel \\(\\$30.\\) The hotel paid the bakery a total of \\(\\$13\\) 000. How many cakes were spoiled? Ans: [?]","28547":"Kai Wen had \\(\\$100\\) at first. She bought 5 magazines which cost \\(\\$16\\) each. She also bought a book which cost \\(\\$4.\\) Which expression represents how much she had left?","28553":"The table shows the prices of the admission tickets to the Universal Studios.<br>Adult: Mon-Fri \\(\\$74,\\) Sat & Sun \\(\\$83\\)<br>Child: Mon-Fri \\(\\$59,\\) Sat & Sun \\(\\$62\\)<br>Special Family bundle for 2 Adults and 2 Children: Mon-Fri \\(\\$240,\\) Sat & Sun \\(\\$280\\)<br>Express Pass: \\(\\$120\\) each<br>A family of 4 adults and 3 children went to the Universal Studios on Saturday. They also bought 4 Express Pass tickets. What was the least possible amount of money they had to pay to go to the Universal Studios?<br>Ans: \\(\\$\\)[?]","28556":"John had \\(\\$260\\) more than Ali. Ravi had 4 times as much money as John. After Ali spent \\(\\$60,\\) John had 3 times as much as what Ali had left. How much money did Ravi have?<br>Ans: \\(\\$\\)[?]","28578":"The usual price of a calculator is \\(\\$40.\\) During a sale, a discount of 20% is given. What is the price that Azman has to pay if he buys it during the sale? Ans: \\(\\$\\)[?]","28600":"The cost of a laptop was \\(\\$4098.\\) A washing machine cost \\(\\$1258\\) more than the laptop. Find the total cost of 70 such washing machines.","28612":"Aileen saved \\(\\$3.20\\) every day from 1st June 2025. A few days later, Bernard started to save. He saved an equal amount of money each day. At the end of 7th June 2025, Bernard saved \\(\\$14.40.\\) At the end of 9th June 2025, Aileen's total savings and Bernard's total savings were the same. How much did Bernard save each day? [?]","28613":"The table shows the parking charges at a car park. For the first hour: \\(\\$1.90.\\) For every additional \\(\\dfrac{1}{2}\\) hour or part thereof: \\(\\$1.10.\\)<br>Mrs Sim parked her car at the car park for 3 h 40 min. How much did she pay in total for the parking charges? [?]","28619":"Wee Kiat bought a television set.<br>The price before GST was \\(\\$1300.\\)<br>How much did Wee Kiat pay for the television set, including 9% GST? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","28621":"Charlene had \\(\\$102\\) less than Bernice. After Charlene gave Bernice \\(\\$90,\\) Bernice had 5 times as much as what Charlene had left. How much money did Charlene have at first? [?]","28638":"A box of cookies at Lee Bakery costs \\(\\$25.\\) Company A bought 200 such boxes for an event and Company B bought 80 boxes to donate to charity. Find the total amount of money collected by Lee Bakery from the sale of the boxes of cookies to Company A and Company B.<br>Ans: \\(\\$\\)[?]","28664":"The usual price of a blouse is \\(\\$80.\\)<br>Fatimah bought the blouse at a 20% discount.<br>How much did she pay for the blouse?","28674":"Desmond's salary was \\(\\$5800.\\)<br>He spent 50% of his salary on food, 20% of his salary on transport and saved the rest.<br>How much did he save? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","28707":"Natalie bought some packets of potato chips. Large packets: 3 packets for \\(\\$8.\\) Small packets: 4 packets for \\(\\$6.\\) She spent an equal amount of money on the large and small packets of potato chips. She bought 35 more small packets than large packets. How many packets of potato chips did Natalie buy altogether?<br>Ans: [?]","28722":"At a bookshop, pencils and erasers are sold only in boxes. A box of 12 pencils costs \\(\\$9.60\\) and a box of 7 erasers costs \\(\\$3.50.\\) Mrs Lee needs to buy 42 pencils and 20 erasers for her art class. What is the least amount of money that she will need to spend on the pencils and erasers? \\(\\$\\)[?]","28737":"Matthew had \\(\\$25\\) more than Amy. When Amy gave Matthew \\(\\$20,\\) Matthew had 6 times as much money as Amy. How much money did Amy have at first?","28745":"Jill had \\(\\$400.\\)<br>She spent 20% of her money on books.<br>How much money did Jill spend on books? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","28754":"The table shows the postal charges for sending a letter to Indonesia. First 15 g: \\(\\$0.55.\\) Every additional 5 g: \\(\\$0.10.\\)<br>Madeline sent a letter weighing 37 g to Indonesia. How much did she pay in total? [?]","28755":"The price of one cookie from a bakery is \\(\\$1.80.\\) When a customer buys 3 cookies, he will receive one more for free. Ben paid \\(\\$39.60\\) for his cookies. How many cookies did Ben receive altogether? [?]","28760":"Anthony made some pies and muffins. He sold each pie at \\(\\$7\\) and each muffin at \\(\\$3.\\) The ratio of the number of pies sold to the number of muffins sold is 1 : 8. Anthony collected \\(\\$589\\) altogether. How many pies did he sell? [?]","28764":"3 identical footballs cost as much as 2 identical basketballs.<br>Mr Chai bought 5 such footballs and 3 such basketballs at \\(\\$532.\\)<br>What is the total cost of 1 football and 1 basketball? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","28765":"Genna bought some shoes at an average price of \\(\\$54.\\) She then bought another 3 pairs of shoes at \\(\\$102\\) each and the average price became \\(\\$72.\\) How many pairs of shoes did she buy altogether? [?]","28766":"Sandy bought an equal number of muffins and tarts. The muffins were sold at 4 for \\(\\$3\\) and the tarts were sold at 7 for \\(\\$5.\\) She paid a total of \\(\\$164\\) for all the muffins and tarts. How many muffins and tarts did she buy altogether? [?]","28767":"Mr Chandran bought a television that cost \\(\\$1320\\) before a discount of 30%.<br>(a) Find the amount of discount given for the television. [?]<br>(b) Mr Chandran paid \\(\\$1722\\) for a laptop. The total discount for the television and the laptop was \\(\\$642.\\) What was the percentage discount given for the laptop? [?] %","28776":"The ratio of Clara's money to Devi's money is 3 : 8. Clara has \\(\\$21.\\) How much money does Devi have? \\(\\$\\)[?]","28783":"Sandra was given some money to buy some books. If she bought 13 books, she would need \\(\\$9\\) more. If she bought 9 books, she would be left with \\(\\$15.\\) How much did each book cost? \\(\\$\\)[?]","28801":"The price of a shelf was \\(\\$240.\\)<br>Mrs Lee bought it at a discount of 15%.<br>How much did she pay for the shelf after the discount?","28803":"Sofia had 6 coins in her purse: 5\u00a2, 5\u00a2, 10\u00a2, 20\u00a2, 50\u00a2 and \\(\\$1.\\)<br>She took out only 4 coins to pay for the exact amount for a bun.<br>Which of the following amounts is not a possible cost for the bun?","28823":"The table shows the parking charges at a car park. For the 1st hour: \\(\\$2.10.\\) For every additional \\(\\dfrac{1}{2}\\) hour or part thereof: \\(\\$0.80.\\)<br>Mr Singh paid \\(\\$4.50\\) for his parking charges. What was the longest possible duration he could have parked his car? [?] min","28824":"Ken wanted to buy 6 pens but he was short of \\(\\$3.20.\\) Instead, he bought 2 pens and had \\(\\$10.80\\) left. How much did Ken have? [?]","28828":"The pie charts show the number of stationery sold in two bookshops, A and B. The total sold in bookshop A is twice the total sold in bookshop B. The number of pens sold in bookshop B is half the total sold in bookshop B. In bookshop A, Pens = 55% (with a right angle between Pencils and Notebooks). In bookshop B, Pencils = 20%. A bar graph shows the amount earned by shopkeeper A from Pens, Pencils and Notebooks.<br>(b) Shopkeeper A earned a total of \\(\\$240\\) from notebooks and each notebook sells for \\(\\$4.\\) How many pens did shopkeeper A sell? [?]<br>(c) How much was the cost of a pen sold in bookshop A? [?]","28830":"Cupcakes are sold only in boxes of 4 and 6 in a shop. A box of 4 small cupcakes costs \\(\\$13.80\\) and a box of 6 big cupcakes costs \\(\\$24.60.\\)<br>(a) Meg wants to get an equal number of small and big cupcakes for a party with \\(\\$200.\\) What is the most number of cupcakes she can get? [?]<br>(b) Peili bought 10 more small cupcakes than big cupcakes from the shop. The total number of cupcakes she bought was more than 30 but fewer than 50. How much did Peili spend on the cupcakes altogether? [?]","28850":"In shop XYZ, a small pack of rice costs \\(\\$8.50\\) and a large pack of rice costs \\(\\$12.\\) Alice and Benson bought the same total number of packs of rice. Alice bought a number of small packs and 5 large packs. Benson bought a number of small packs and 15 large packs. Who bought more small packs of rice, and how many more?","28851":"In shop XYZ, a small pack of rice costs \\(\\$8.50\\) and a large pack of rice costs \\(\\$12.\\) Alice and Benson bought the same total number of packs. Alice bought some small packs and 5 large packs; Benson bought some small packs and 15 large packs (Alice bought 10 more small packs than Benson). Benson spent more money at the shop. How much more did Benson spend? \\(\\$\\)[?]","28866":"Mrs Lee parked her car at a mall from 1:30 pm to 8:00 pm. The parking rates were: From 6:00 am to 6:00 pm: \\(\\$1.50\\) per hour or part thereof. From 6:00 pm to 6:00 am: \\(\\$2.\\) How much did she pay for her parking charges?","28880":"Mr Tan bought an oven for \\(\\$1035.\\) After a down payment of \\(\\$90,\\) he paid the remaining amount in monthly payments of \\(\\$135\\) each. How many months did Mr Tan take to pay the remaining amount? [?]","28881":"A sum of money was shared among Amy, Betty and Clara. Amy received \\(\\$260\\) more than Betty. Clara received 4 times as much money as Amy. Betty received \\(\\$227.\\) How much more money did Clara receive than Amy? [?]","28886":"Apples were sold at 5 for \\(\\$3.20\\) and pears were sold at 3 for \\(\\$4.90.\\) Mr Lee bought an equal number of apples and pears to sell at a carnival. He spent \\(\\$551.30\\) more on the pears than on the apples. How many apples did he buy? [?]","28890":"At a Science exhibition, \\(\\dfrac{1}{2}\\) of the entrance tickets were sold at full price and \\(\\dfrac{3}{7}\\) of the tickets were sold at half price.<br>The remaining 45 tickets were given away free of charge.<br>The full price of each ticket was \\(\\$38.\\)<br>(a) How many tickets were there altogether? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/><br>(b) What was the total amount of money collected from the sale of all the tickets? <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/>","28891":"Mrs Yeo had some oranges. She threw away \\(\\dfrac{2}{9}\\) of the oranges, which were rotten. She gave \\(\\dfrac{1}{3}\\) of the remainder to her neighbours. She then sold the rest of the oranges at 4 for \\(\\$2.20.\\) She received \\(\\$231\\) from the sale of the oranges.<br>(a) What fraction of the oranges did she give to her neighbours? [?]<br>(b) How many oranges did she have altogether at first? [?]","28892":"Two identical watches are sold at discounted prices in Store A and Store B during a sale. Store A: usual price \\(\\$350,\\) 15% off. Store B: usual price \\(\\$320,\\) 10% off.<br>(a) What is the price of the watch in Store A after the discount is given? [?]<br>(b) Mr Neo wants to buy the watch from Store B. How much cheaper will the watch cost in Store B than in Store A during the sale? [?]","28936":"Linda had \\(\\$9.\\) She spent \\(\\$6\\) on 6 pencils and 12 erasers. Each pencil cost 3 times as much as each eraser. She used all her remaining money to buy more pencils of the same kind. How many pencils did Linda buy altogether?","28959":"The pie chart shows how Ari spends her weekly pocket money of \\(\\$72.\\) AB is a straight line. Food and Drinks fills half the circle, Savings is \\(\\dfrac{1}{12}\\) of the circle and Transport is the rest of the lower half. How much money does she spend on Food and Drinks, Transport and Savings? Give the three amounts in dollars.<br>Food and Drinks \\(\\$\\)[?]<br>Transport \\(\\$\\)[?]<br>Savings \\(\\$\\)[?]","28962":"May's monthly salary is \\(\\$4200.\\) She spends 10% of her monthly salary on transport, 30% of it on food and saves the rest.<br>(a) How much money does she save each month? \\(\\$\\)[?]<br>(b) How much more money does she spend on food than transport? \\(\\$\\)[?]","28967":"Alicia had some money at first. She spent \\(\\$12.60\\) on 3 notebooks and 6 pencils. She wanted to buy another notebook, but was short of \\(\\$0.80.\\) Instead, she bought 1 more pencil and had \\(\\$0.70\\) left.<br>(a) What was the cost of one notebook? \\(\\$\\)[?]<br>(b) How much money did Alicia have at first? \\(\\$\\)[?]","28989":"A bakery sold 6 muffins for \\(\\$15.\\)<br>What is the price of one muffin?","28999":"The usual price of a pair of running shoes was \\(\\$250.\\) Aly bought it and had to pay 9% GST. What was the price of the running shoes including GST? Ans: \\(\\$\\)[?]","29011":"Mary had \\(\\$200.\\) She spent \\(\\$160.\\) What percentage of her money did she spend?","29019":"Apples are sold at 5 for \\(\\$3.10.\\)<br>What is the cost of each apple?","29048":"The price of a laptop before GST was \\(\\$1800.\\) What was the price of the laptop after adding 9% GST?<br>\\(\\$\\)[?]","29072":"John spent \\(\\$18.50\\) on some rulers and erasers. He bought 3 more rulers than erasers. A ruler costs \\(\\$1.50\\) and an eraser costs \\(\\$0.50.\\) How many erasers did John buy? [?]","29075":"In a shop, candles are only sold in boxes. A box of 7 short candles costs \\(\\$2\\) and a box of 5 long candles costs \\(\\$3.\\)<br>(a) Xiao Ming needs 14 short candles and 15 long candles for his lanterns. How much will Xiao Ming need to spend on the candles? [?]<br>(b) What is the least amount of money that Susan needs to spend to buy 30 short candles and 24 long candles? [?]","29110":"Samad saves \\(\\$2.50\\) every day. For every \\(\\$15\\) saved, his father will give him an additional \\(\\$3.\\) How much money will Samad save in 50 days? Ans: \\(\\$\\)[?]","29116":"The pie chart shows how Isabelle spent her money. Transport is 24% and Food is 60%.<br>The amount of money Isabelle saved is 25% of the amount she spent on transport.<br>(b) Isabelle saved \\(\\$90.\\) How much money did she spend in total? Ans: \\(\\$\\)[?]","29153":"The table shows the prices of 3 rice dishes. Uncle Roger ordered two different types of rice dishes and paid a total of \\(\\$13.08,\\) including 9% GST. Which 2 rice dishes did he order?<br>Chicken Rice \\(\\$5.00\\)<br>Duck Rice \\(\\$6.00\\)<br>Fried Rice \\(\\$7.00\\)","29155":"Mrs Lee bought some muffins from a shop. The cost of each muffin is \\(\\$2.\\) For every 4 muffins she bought, 1 muffin was given free. Mrs Lee paid \\(\\$252\\) altogether. What was the greatest number of muffins Mrs Lee would get from the shop? [?]","29180":"A group of 10 adults and 11 children went to FunWorld Amusement Park. What was the least amount of money the group could have paid?<br>Child ticket price: \\(\\$12.10.\\) Adult ticket price: \\(\\$22.50.\\) Promotion: For every 3 paying adults, 2 children enter free!<br>Ans: \\(\\$\\)[?]","29192":"For every mobile phone that Susan sells, she earns 10% of the first \\(\\$160\\) of the selling price and 12% of the remaining selling price. Susan sold a mobile phone and earned \\(\\$76.90.\\) What was the selling price of the mobile phone?<br>Ans: \\(\\$\\)[?]","29194":"Julie's coin box contained 20-cent and 50-cent coins. In the coin box, there were 7 more 50-cent coins than 20-cent coins. The total amount of money in the coin box was \\(\\$18.90.\\)<br>(a) How many coins were in the coin box? Ans: [?]<br>(b) How much money does Julie have left in the coin box after spending all her 20-cent coins on food? Ans: \\(\\$\\)[?]","29196":"Mrs Brown bought \\(\\dfrac{2}{5}\\) as many cupcakes as pies for a party. She spent \\(\\dfrac{3}{4}\\) as much on each cupcake as each pie. Each cupcake cost \\(\\$4.50.\\) She paid \\(\\$504\\) more on the pies than the cupcakes.<br>(a) How much did she pay for each pie? Ans: \\(\\$\\)[?]<br>(b) How many pies did she buy? Ans: [?]","29236":"Express 20\u00a2 as a percentage of \\(\\$5.\\)","29250":"The table shows the hourly rate of work done at a call center. Weekdays (Monday to Friday): \\(\\$8.\\) Weekend (Saturday and Sunday): \\(\\$10.\\)<br>Leonard works at the call center for 10 hours daily on weekdays and 5 hours on Saturdays. How much does he earn in a week? \\(\\$\\)[?]","29259":"The usual price of a tennis racket is \\(\\$120.\\) During a sale, Joe bought the racket at a discount of 20%. How much did Joe pay for the racket? \\(\\$\\)[?]","29267":"The bar graph shows the number of four different brands of pens sold at a shop. 560 pens were sold altogether. Part of the graph was torn off. The prices per pen are: A \\(\\$2.80,\\) B \\(\\$2.20,\\) C \\(\\$2.50,\\) D \\(\\$1.60.\\) The number of pens sold from Brand C was \\(\\dfrac{3}{5}\\) the number of pens sold from Brand D. The total amount collected from the sales of pens from Brand C and Brand D was \\(\\$620.\\)<br>(a) How many Brand C pens were sold? [?]<br>(b) How many Brand B pens were sold? [?]","29280":"Norman has 14 kg of cashew nuts. He packs them into bags of \\(\\dfrac{3}{4}\\) kg and has some left. He sells each bag for \\(\\$4.95.\\)<br>(a) What is the greatest amount of money that Norman can get from selling all the \\(\\dfrac{3}{4}\\)-kg bags of cashew nuts? \\(\\$\\)[?]<br>(b) What is the mass of cashew nuts left? [?] g","29299":"A toaster has a sale price of \\(\\$56\\) and a usual price of \\(\\$80.\\) What is the percentage discount for the toaster? [?]%","29316":"William had \\(\\$100.\\) After buying 5 identical bags, he had \\$p left. Find the cost of each bag.","29318":"Nathanael spent 20% of his money on a cap. He used the rest of the money to buy a bag and a shirt. The bag cost \\(\\$15\\) more than the cap. The shirt cost \\(\\$165.\\) Find the cost of the bag.","29348":"A lollipop cost \\(\\$0.70.\\) There were 80 lollipops in a box. Janie bought 8 such boxes of lollipops for her class party. How much did she spend on the lollipops?","29366":"Mr Tan bought a laptop. The price of the laptop before GST was \\(\\$2580.\\) He had to pay GST of 9% on the price of the laptop. What was the amount of GST he had to pay?<br>\\(\\$\\)[?]","29371":"Nurul and Peili went shopping together with a total sum of \\(\\$60.\\) Nurul spent twice as much as Peili. The amount Peili had left was \\(\\$7\\) more than what she had spent. She had twice as much money left as Nurul. How much money did Nurul have at first?<br>\\(\\$\\)[?]","29390":"Jasmine started a savings plan by putting 2 notes in a money box every week. Each note was either a two-dollar note or a five-dollar note. Her mother would put in a ten-dollar note every 4 weeks. The total value of the notes after 17 weeks was \\(\\$171.\\)<br>(a) How many notes were there in the box after 17 weeks? [?]<br>(b) How many of the notes were five-dollar notes? [?]","29391":"In a bakery, tarts and cupcakes were sold only in boxes. A box of 6 tarts cost \\(\\$33\\) and a box of 8 cupcakes cost \\(\\$28.\\)<br>(a) Yasmin bought an equal number of tarts and cupcakes. She spent \\(\\$96\\) more on the tarts than the cupcakes. How many boxes of tarts did she buy altogether? [?]<br>(b) Both Caleb and Dan bought tarts and cupcakes at the bakery. Dan bought 20 boxes of cupcakes. Caleb bought 8 boxes of cupcakes. The total number of boxes of tarts and cupcakes they each bought was the same. How many more cupcakes and tarts did Dan buy than Caleb? [?]","29439":"Benson had three fewer \\(\\$1\\) coins than 20\u00a2 coins. He used all his \\(\\$1\\) coins and two 20\u00a2 coins. The total value of the 20\u00a2 coins left was \\(\\$2.\\) How much money did Benson use? \\(\\$\\)[?]","29441":"In a shop, cups are sold in sets of 8 for \\(\\$60\\) and plates are sold in sets of 12 for \\(\\$75.\\) Lim Soon bought the same number of cups and plates. He spent \\(\\$660\\) altogether. How many cups did Lim Soon buy? [?]","29444":"The table shows an electrical company's charges (before GST): first 180 units at \\(\\$0.25\\) per unit, any usage above 180 units at \\(\\$0.35\\) per unit.<br>(a) In January, the Wang family used 260 units. How much did they pay after including a 9% GST? \\(\\$\\)[?]<br>(b) In February, the charge before GST was \\(\\$60.05.\\) How many units did the Wang family use in February? [?]","29446":"A file cost \\(\\$3.10\\) more than a pen. Hakim bought twice as many pens as files. He spent a total of \\(\\$92.70.\\) He spent \\(\\$6.30\\) more on the files than on the pens. Find the total cost of a pen and a file. \\(\\$\\)[?]","29450":"Paul and Zalim went out together with a total of \\(\\$140.20.\\) Zalim spent 4 times as much money as Paul. The amount of money Paul had left was \\(\\$12\\) more than \\(\\dfrac{1}{2}\\) of what Zalim spent. The amount of money Zalim had left was \\(\\dfrac{1}{5}\\) of what Paul had left.<br>(a) How much money did Paul spend? \\(\\$\\)[?]<br>(b) How much money did Zalim have at first? \\(\\$\\)[?]","29484":"Erasers were sold in packets of 6 for \\(\\$4\\) or 1 eraser for \\(\\$0.80.\\) James bought 50 erasers. What was the least amount of money he spent on the erasers?<br>Ans: \\(\\$\\)[?]","29486":"There are twice as many \\(\\$1\\) coins as \\(\\$2\\) notes in a bag. The total amount in the bag is \\(\\$276.\\) How many \\(\\$2\\) notes are there? [?]","29492":"Jenny, Siti and Ali shared the cost of a present in the ratio \\(3 : 7 : 4\\). Jenny and Ali paid a total of \\(\\$210.\\) What was the cost of the present? \\(\\$\\)[?]","29506":"Mr Tan wanted to buy 14 cartons of drinks but he was short of \\(\\$11.40.\\) Each carton costs \\(\\$15.20.\\) How much money, in dollars, did Mr Tan have? \\(\\$\\)[?]","29508":"The price of a television before GST is \\(\\$1299.\\) What is the price, in dollars, of the television including 9% GST? \\(\\$\\)[?]","29510":"A water bottle and a pencil case cost \\(\\$27.70.\\) A water bottle and a school bag cost \\(\\$106.10.\\) The school bag costs 8 times as much as a pencil case. What is the cost, in dollars, of a school bag? \\(\\$\\)[?]","29515":"The table shows the charges for taxi fare: 1st 2 km or less costs \\(\\$4.80\\); every additional 400 m or part thereof costs \\(\\$0.35.\\)<br>(a) Mr Anderson's trip was 6 km. How much, in dollars, did he pay for his ride? \\(\\$\\)[?]<br>(b) Mrs Smith paid \\(\\$15.65\\) for her trip. What was the greatest distance, in km, she could have travelled? [?]","29530":"The table shows the charges for taxi fare: First 1 km \\(\\$4.00\\); Every additional 400 m or less \\(\\$0.30\\); Every 45 seconds of waiting or less \\(\\$0.30.\\)<br>(a) Alan took a taxi from home to a mall. The taxi stopped once at a traffic light for 1 minute and travelled a total distance of 2.2 km to reach the mall. How much was his taxi fare? \\(\\$\\)[?]<br>(b) Karen paid \\(\\$7\\) for her taxi fare. She did not stop at all for the whole journey. What is the furthest distance she travelled? [?] m","29550":"The usual price for a watch was \\(\\$140.\\)<br>David bought it at a discount of 20%.<br>How much was the discount?","29555":"The price for 30 mangoes is \\(\\$48.\\) What is the price of 2 such mangoes? \\(\\$\\)[?]","29562":"A piggy bank contains 45 coins with a total value of \\(\\$17.10.\\)<br>There are only 20-cent coins and 50-cent coins in the piggy bank.<br>How many 50-cent coins are there? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/>","29567":"Sally wanted to buy a computer but the amount of money she had was only \\(\\dfrac{5}{9}\\) of the cost of the computer.<br>After her parents gave her \\(\\$350,\\) the amount of money she then had was \\(\\dfrac{2}{3}\\) of the cost of the computer.<br>How much did the computer cost?","29576":"Taylor saved 2 notes in her piggy bank each day for 10 days. Each note was either a \\(\\$2\\) note or a \\(\\$5\\) note. The total amount of money in the piggy bank was \\(\\$61.\\) How many of the notes were \\(\\$2\\) notes? [?]","29591":"A set lunch cost \\(\\$10.28.\\) What is the cost, in dollars, of 60 such set lunches? \\(\\$\\)[?]","29593":"The usual price of a mobile phone was \\(\\$1250.\\) During a sale, it was sold at a discount of 30%. What was the price, in dollars, of the mobile phone after the discount? \\(\\$\\)[?]","29594":"The table shows the postage rates for mailing letters in Singapore: mass step not over 20 g costs \\(\\$0.85\\); not over 50 g costs \\(\\$1.05\\); not over 100 g costs \\(\\$1.45\\); not over 250 g costs \\(\\$3.65.\\) Wei Tong mailed a letter weighing 35 g and another letter weighing 200 g. How much postage, in dollars, did Wei Tong pay altogether? \\(\\$\\)[?]","29610":"Alex receives a monthly allowance of \\(\\$1000.\\) He spends 80% of his allowance and saves the rest. How many months will it take him to save a total of \\(\\$12\\) 000? [?]","29611":"The original price of a lamp is \\(\\$80.\\) Ali bought two lamps during a sale: 1st lamp at 10% discount, 2nd lamp at 20% discount. What was the price of the two lamps after adding 9% GST? \\(\\$\\)[?]","29615":"Kenny needed 120 pieces of ribbons, each of length 60.25 cm, to tie presents for a party. Ribbons are sold in rolls of 2 m each. Each roll of ribbon costs \\(\\$4.80.\\)<br>a) What is the least number of rolls of ribbons that Kenny needs to buy? [?]<br>b) How much does he have to pay for the rolls of ribbons? \\(\\$\\)[?]","29700":"Three girls had the same number of coins. Mabel had only twenty-cent coins. Candy had 36 one-dollar coins (and twenty-cent coins). Lilian had 13 one-dollar coins.<br>(b) Candy used half of her one-dollar coins and some of her twenty-cent coins to buy a book that cost \\(\\$20.40.\\) How many twenty-cent coins did Candy use? Ans: [?]","29756":"Miss Lim travelled 3.2 km in a taxi from home to the mall. Her taxi fare was based on the charges: First km \\(\\$4.80\\); every additional 400 m or less \\(\\$0.20.\\) How much was her taxi fare?","29758":"Limin, Ming and Raju each had some money at first. Limin gave Ming \\(\\$2.50.\\) Ming then gave Raju \\(\\$1.80.\\) Raju then spent \\(\\$3\\) on a pen. In the end, they each had \\(\\$5.\\) What was the difference between the amount Limin and Raju had at first?","29780":"Ariana had \\(\\$28.\\) After buying 7 identical cups, she had \\$y left. Express the cost of 1 cup in terms of y.","29786":"Stall A and Stall B sold the same total number of burgers and sandwiches at a school carnival. A burger costs \\(\\$4.50\\) and a sandwich costs \\(\\$2.00.\\) Stall A sold some burgers and 64 sandwiches. Stall B sold some burgers and 96 sandwiches.<br>(a) Which stall collected more money? Stall: [?]. How much more? \\(\\$\\)[?]<br>(b) The total mass of burgers and sandwiches sold at Stall A was 8.32 kg. Each burger is 60 g heavier than each sandwich. What is the total mass of burgers and sandwiches sold by Stall B in kg? [?] kg","29809":"Ticket prices: Adult below 65 \\(\\$24,\\) Adult 65+ \\(\\$17,\\) Child below 12 \\(\\$10.\\) Adult tickets sold were 6 times the child tickets. \\(\\dfrac{4}{5}\\) of adult tickets sold were for adults below 65. A total of \\(\\$9464\\) was collected. What fraction of the tickets sold were for adults aged 65 years and above? Give your answer in the simplest form.","29891":"Ishan had \\(\\$700.\\) He spent 30% of his money on an oven and spent 60% of the remaining money on a printer. How much money did he have left?<br>\\(\\$\\)[?]","29892":"Shawn counted the number of coins in his piggy bank. 30% of the coins are \\(\\$1\\) coins. 16% are 50\u00a2 coins while the rest are 10\u00a2 coins. The total value of the 50\u00a2 coins is \\(\\$72.\\) Find the total value of the 10\u00a2 coins.<br>\\(\\$\\)[?]","29897":"Xin Hui bought 15 similar pens and 8 similar files. Each file cost twice as much as each pen. The total cost of a pen and a file is \\(\\$4.20.\\) How much did Xin Hui pay altogether?<br>\\(\\$\\)[?]","29899":"Lynette bought some bags at an average price of \\(\\$350\\) each. Then she bought another 2 bags for \\(\\$925\\) each and the average price became \\(\\$400.\\) How many bags did she buy altogether?<br>[?]","29900":"Muthu has some \\(\\$2,\\) \\(\\$5\\) and \\(\\$10\\) dollar notes. \\(\\dfrac{2}{3}\\) of the number of the \\(\\$10\\) notes is equal to \\(\\dfrac{2}{5}\\) of the number of \\(\\$2\\) notes which is equal to \\(\\dfrac{1}{3}\\) of the number of \\(\\$5\\) notes. After he took out six \\(\\$5\\) notes and exchanged them for \\(\\$2\\) notes, the number of the \\(\\$5\\) notes to the number of the \\(\\$10\\) notes is now the same. Find the total value of the notes.<br>\\(\\$\\)[?]","29941":"The average price of a set of books is \\(\\$12.\\) When one more book costing \\(\\$42\\) is added, the average becomes \\(\\$18.\\) How many books were there at first? [?]","29943":"Mrs Chia bought an iron and a kettle for \\(\\$279.30.\\) The kettle cost \\(\\$39.70\\) less than the iron. How much did the iron cost?<br>\\(\\$\\) [?]","29952":"In January, Jeremy spent \\(\\$30.\\) In February he spent 30% less and saved \\(\\$27.\\)<br>(a) How much did Jeremy spend in February? \\(\\$\\) [?]<br>(b) What was the percentage increase in the amount he saved in February? [?]%","29969":"A shop sold 240 tables for the year. 35% of the tables were sold in December. (a) How many tables were sold in December? [?]<br>(b) The price of 1 table before 9% GST was \\(\\$700.\\) Find the amount of GST for 1 table. \\(\\$\\) [?]","29971":"A shop had a sale and gave the same percentage discount on all types of bags. Bag A: sale price \\(\\$32,\\) usual price \\(\\$40.\\) Bag B: sale price \\(\\$48,\\) usual price unknown. (a) What was the percentage discount for Bag B? [?] %<br>(b) What was the usual price for Bag B? \\(\\$\\) [?]","30024":"After a 10% discount, the price of an admission ticket to the amusement park is \\(\\$45.\\) Children are given a further discount of \\(\\$3.\\) What is the percentage discount for one child ticket? [?]%","30041":"Mr Abdul received some Majulah Singapura vouchers in denominations of \\(\\$2,\\) \\(\\$5\\) and \\(\\$10.\\) There were as many \\(\\$10\\) vouchers as \\(\\$5\\) vouchers. The ratio of the number of \\(\\$2\\) vouchers to the number of \\(\\$10\\) vouchers was 3 : 2. The value of all the vouchers was \\(\\$1260.\\)<br>(a) What was the total value of the \\(\\$2\\) vouchers he received? \\(\\$\\)[?]<br>(b) Later he had 4 \\(\\$2\\) vouchers, 2 \\(\\$5\\) vouchers and 1 \\(\\$10\\) voucher left. He bought food from 3 stalls (Stall A \\(\\$8,\\) Stall B \\(\\$9,\\) Stall C \\(\\$11\\)). Vouchers used at each stall cannot exceed the cost of the food. What was the least amount he could have paid in cash? \\(\\$\\)[?]","30057":"Terry had some \\(\\$2,\\) \\(\\$5,\\) and \\(\\$10\\) notes in his wallet. He had 12 notes and the total value of the notes was \\(\\$71.\\) How many \\(\\$5\\)-notes did he have?","30073":"The table shows the charges for delivering items within Singapore by a company: mass step not over 5 kg costs \\(\\$14\\); not over 15 kg costs \\(\\$17\\); not over 30 kg costs \\(\\$20\\); per additional step of 1 kg or part thereof costs \\(\\$2.50.\\) How much will Mrs Sammy have to pay the company for the delivery of an item that weighs 36.2 kg? Ans: \\(\\$\\)[?]","30074":"The price of an air-fryer is \\(\\$135.\\) Mr Henderson bought it at a discount of 15%. How much did he pay for the air-fryer? Ans: \\(\\$\\)[?]","30099":"The average pocket money of 3 boys is \\(\\$24.\\)<br>Find the total amount of pocket money of the 3 boys.","30103":"Boston has an equal number of twenty-cent and fifty-cent coins.<br>The total value of his coins is \\(\\$14.\\)<br>How many coins does Boston have altogether?","30120":"The table shows the parking charges at a shopping mall: 1st hour or part thereof costs \\(\\$2.80\\); subsequent 30 minutes or part thereof costs \\(\\$0.90.\\) Mr Wong parked his car from 5.45 p.m. to 7.55 p.m. How much was his parking charges? Ans: \\(\\$\\)[?]","30121":"Sam had \\(\\$340\\) more than John. Daniel had twice as much money as Sam. The total amount of money that Sam and Daniel had was \\(\\$1230.\\) How much money did John have? Ans: \\(\\$\\)[?]","30131":"Elena bought many types of toys at an average cost of \\(\\$12.\\) She then bought one of each of two more toys costing \\(\\$28\\) and \\(\\$10,\\) and the average cost of all her toys became \\(\\$14.\\)<br>(a) How many toys did she buy in total? [?]<br>(b) What was the total cost of all her toys that she bought? Ans: \\(\\$\\)[?]","30134":"Two companies show delivery fees. Fast Express: service fee \\(\\$9,\\) first 5 km \\(\\$1.20\\) per km or part thereof, above 5 km \\(\\$0.70\\) per km or part thereof. SaSamoveit: service fee \\(\\$12,\\) first 3 km \\(\\$1\\) per km or part thereof, above 3 km \\(\\$0.45\\) per km or part thereof.<br>(a) Mr Lee wants to send a parcel from RH School to NR School which is 4.4 km away. What is the delivery fee he needs to pay if he uses SaSamoveit? Ans: \\(\\$\\)[?]<br>(b)(ii) Mrs Wen wants to send a parcel 8.7 km away to the cheaper company. How much will she save when she uses the cheaper company? Ans: \\(\\$\\)[?]","30150":"Mr Chua and Miss Sally had the same amount of money. Mr Chua bought 3 muffins and had \\(\\$13\\) left. Miss Sally wanted to buy 8 muffins but was short of \\(\\$11.\\) What was the cost of 1 muffin? [?]","30164":"Linda had \\(\\$130.\\)<br>She spent 60% of the money and saved the rest.<br>How much did she save?","30180":"Lily had a monthly allowance of \\(\\$720.\\) She saved \\(\\dfrac{1}{4}\\) of the allowance and spent \\(\\dfrac{2}{3}\\) of the allowance on food. She spent the remainder equally on transport and her hobby. How much did she spend on transport? Ans: \\(\\$\\)[?]","30188":"The total cost of a bag and 3 files was \\(\\$65.\\) The cost of the bag was twice the cost of each file. What was the cost of the bag? Ans: \\(\\$\\)[?]","30194":"There is a sale: first pair of shoes at 40% discount, second pair at 55% discount. Tom bought 2 pairs of shoes. Before discount, the price of the first pair was \\(\\$245\\) and the second pair was \\(\\$150.\\)<br>(a) What was the discount for the first pair of shoes? Ans: \\(\\$\\)[?]<br>(b) What was the price of the second pair of shoes after the discount? Ans: \\(\\$\\)[?]","30195":"A shop sells cupcakes: 1 pack of 3 cupcakes costs \\(\\$4.90,\\) and 1 cupcake costs \\(\\$1.85.\\) Mrs Tan has \\(\\$29\\) to buy cupcakes at this shop. What is the most number of cupcakes she can buy? [?]","30226":"Bala bought two bags. The average cost of the two bags was \\(\\$360.\\) One of the bags cost \\(\\$198.\\) What was the cost of the other bag?","30242":"Mr Yeo bought a laptop for \\(\\$3235.\\) He paid \\(\\$1435\\) first and the remaining amount in monthly payments of \\(\\$300\\) each. How many months did he take to pay the remaining amount? [?]","30247":"The table shows the amount of money saved by four children. Anne \\(\\$280,\\) Betty \\(\\$320,\\) Calvin \\(\\$304,\\) Derek ?. The average amount of money the four children saved was \\(\\$295.\\) How much did Derek save? [?]","30255":"At a supermarket, 200 g of grapes cost \\(\\$4.50.\\) Apples are sold at 5 for \\(\\$3.60.\\) How much will 600 g of grapes and 30 apples cost altogether? [?]","30259":"Karen spent \\(\\$10\\) on 2 exercise books and 8 pens. She wanted to buy another exercise book but was short of \\(\\$0.60.\\) Instead, she bought 1 more pen and had \\(\\$0.40\\) left.<br>a) What was the cost of an exercise book? [?]<br>b) How much money did Karen have at first? [?]","30267":"200 bags cost \\(\\$7040.\\)<br>What is the cost of 1 bag?","30272":"Peter made 12 bracelets in the morning and 24 bracelets in the afternoon.<br>He sold all the bracelets at 2 for \\(\\$12.\\)<br>Which number sentence represents the total amount of money collected by Peter?","30302":"The usual price of a dress is \\(\\$118.75.\\)<br>Mrs Tan was given a 20% discount.<br>(a) How much is the discount? <input type=\"text\" id=\"input_0\" class=\"fill-blank-input\" placeholder=\"?\" \/><br>(b) Mrs Tan paid an additional 7% of GST on the discounted price of the dress.<br>How much did she pay for the dress including the GST? <input type=\"text\" id=\"input_1\" class=\"fill-blank-input\" placeholder=\"?\" \/>","30306":"Janice and Kelly bought some cups from a stall. The cups are sold in sets of 2 and 3 cups. Large cups: 2 for \\(\\$12.\\) Small cups: 3 for \\(\\$15.\\)<br>(a) Janice bought an equal number of large and small cups. She spent \\(\\$24\\) more on large cups than small cups. How many cups did she buy altogether? [?]","30307":"Janice and Kelly bought some cups from a stall. Large cups: 2 for \\(\\$12.\\) Small cups: 3 for \\(\\$15.\\) Kelly bought 6 large cups and had \\(\\$50\\) left. She bought as many small cups as she could with the remaining money. What fraction of the cups she bought were small cups?","30357":"The total cost of 2 chairs and 1 table is \\(\\$210.\\) The total cost of 1 chair and 2 tables is \\(\\$285.\\) What is the cost of 1 chair? [?]","30359":"The cost of a pen is \\(\\$1.80.\\) Siti buys 40 such pens and gives the cashier \\(\\$100.\\) How much change does Siti get? [?]","30377":"During an overseas vacation, Rita and Sarah had the same amount of allowance. Each day, Rita spent \\(\\$4\\) and Sarah spent \\(\\$6.\\) At the end of the vacation, Sarah had \\(\\$12\\) left, while Rita had 4 times as much money as Sarah.<br>a) How many days did the vacation last? [?]<br>b) How much was each girl's allowance at first? [?]","30399":"Bala has \\(\\$1200.\\) He saves \\(\\$800\\) and spends the remainder. What fraction of his savings is his spending?","30422":"Peter was given a sum of money. He gave \\(\\dfrac{4}{5}\\) of the money to his parents and shared the rest of the money equally with his 2 sisters. His parents received \\(\\$240.\\) How much did Peter receive in the end? Ans: \\(\\$\\)[?]","30428":"Ali needs 1 full tank of spring water for a gardening job. Given that 1 \u2113 of spring water costs \\(\\$0.65,\\) how much money does Ali need for a tank measuring 100 cm by 80 cm by 50 cm? Ans: \\(\\$\\)[?]","30439":"Caili and Deepa had different amounts of money. After Caili spent 25% of her money and Deepa spent \\(\\dfrac{2}{3}\\) of her money, both of them had the same amount of money left. The total amount of money left was \\(\\$480.\\) Find the total amount of money they had at first. Ans: \\(\\$\\)[?]","30459":"Rishu had some money left after spending \\(\\$104\\) on a pair of shoes, a cap and a book. He could not buy another similar pair of shoes with his remaining money as he was short of \\(\\$29.\\) He decided to buy another similar book instead and had \\(\\$11\\) left in the end. (a) How much more did the pair of shoes cost than the book? (b) A pair of shoes cost 4 times as much as the cap. How much did Rishu have at first?<br>(a) \\(\\$\\)[?] (b) \\(\\$\\)[?]","30471":"Alex and Ben had \\(\\$190\\) altogether at first. After Alex gave Ben \\(\\$30,\\) Alex had \\(\\$40\\) more than Ben. How much did Ben have at first?","30481":"The table shows the charges to post a parcel.<br>First 500 g: \\(\\$2\\); Every additional 1 kg: \\(\\$1.50.\\)<br>Mr Yap posted a parcel that weighed 4.8 kg. How much did Mr Yap pay to post the parcel?<br>Ans: \\(\\$\\)[?]","30483":"Jack wanted to buy 16 chicken wings but found that he needed another \\(\\$5.\\) He bought 7 chicken wings and had \\(\\$5.80\\) left. What was the cost of a chicken wing?<br>Ans: \\(\\$\\)[?]","30489":"A fruit seller packed 860 apples into bags of 4 for sale. The price of each bag of apples was \\(\\$7.80.\\) How much money did the fruit seller collect after selling all the bags of apples?<br>Ans: \\(\\$\\)[?]","30494":"A baker sold some boxes of tarts and cookies. Each box of tarts cost \\(\\$3.10\\) and each box of cookies cost \\(\\$5.50.\\) The baker sold twice as many boxes of tarts as boxes of cookies. He earned a total of \\(\\$1439.10.\\) How many boxes of tarts did he sell?<br>Ans: [?]","30501":"Chocolate muffins 3 for \\(\\$5,\\) vanilla muffins 4 for \\(\\$6.\\) Mrs Sim spent an equal amount of money on the chocolate muffins and the vanilla muffins. What fraction of the muffins she bought were chocolate? Leave your answer in the simplest form.","30507":"The usual price of a watch is \\(\\$320.\\) After a 20% discount, how much does the watch cost?<br>\\(\\$\\)[?]","30528":"After a discount of 25%, an adult would have to pay \\(\\$60\\) for a buffet lunch. A senior citizen gets an additional discount of \\(\\$12.\\) Find the percentage discount given to the senior citizen for the buffet lunch.","30547":"The average cost of 3 different backpacks is \\(\\$12.70.\\) The total cost of 2 of the backpacks is \\(\\$16.80.\\) What is the cost of the third backpack? [?]","30575":"The pie chart shows the number of \\(\\$10,\\) \\(\\$20,\\) \\(\\$50\\) and \\(\\$100\\) concert tickets sold by an event organiser. The \\(\\$100\\) sector is 5%, the \\(\\$50\\) sector is \\(\\dfrac{3}{20}\\), and the \\(\\$10\\) sector is half the circle. The organiser sold 160 more \\(\\$50\\)-tickets than \\(\\$100\\)-tickets. How many \\(\\$10\\)-tickets were sold?<br>[?]","30597":"Siti bought a pair of rollerblades at a 25% discount and saved \\(\\$28.\\) What was the price of the rollerblades before the discount? [?]","30602":"The same brand of laundry detergent is sold in 2 shops in 2 sizes; prices before discount are the same at both shops. Shop A: for every 1 big bottle purchased, get 45% discount on 1 small bottle. Shop B: bundle set @ \\(\\$35\\) = 2 small bottles + 2 big bottles.<br>(a) The price of a big bottle before discount is \\(\\$14.40.\\) Susan bought 1 small bottle and 1 big bottle from Shop A and paid \\(\\$18.25\\) altogether. What was the price of the small bottle before discount? [?]<br>(b) Michelle bought a bundle set from Shop B. What percentage of the amount of money spent in Shop B did she save by buying from Shop B instead of Shop A? Round your answer to 1 decimal place. [?]","30613":"A book costs \\$b more than a pen. The total cost of a book and 3 pens is \\(\\$20.\\) Find the cost of a pen.","30633":"Jane spent \\(\\dfrac{3}{5}\\) of her money on a pair of shoes. She then spent \\(\\$5\\) more than \\(\\dfrac{1}{4}\\) of the remainder on a dress. The dress cost \\(\\$35.\\) How much money did she have at first?<br>Ans: \\(\\$\\)[?]","30638":"The amount of money Bala had was 60% that of Alan's.<br>(a) Alan had \\(\\$52.\\) How much did Bala have? Ans: \\(\\$\\)[?]<br>(b) After receiving some money from his mother, Bala's amount of money increased by 20%. By what percentage must Alan's money decrease so that they have the same amount of money? Ans: [?]%","30654":"A fish burger cost \\$\\(m\\). A beef burger cost \\$(\\(m\\) + 1). The total cost of 4 fish burgers and 1 beef burger is \\(\\$21.\\) Find the cost of 1 beef burger.","30677":"The usual price of a toaster was \\(\\$80.\\) A discount of 20% was given during a sale. When Mdm Singh bought the toaster online, an additional \\(\\$10\\) discount was given after the discount of 20%. What was the total percentage discount given to Mdm Singh for the toaster?<br>[?]%","30688":"Mr Tan had some bags to sell. The line graph shows the number of bags left at the end of each day from Monday to Sunday. Mr Tan sold each bag for \\(\\$18.\\) On Saturday, for every 2 bags sold to a customer, a third bag was given for free.<br>What was the least possible amount of money collected from the sale of bags on Saturday?<br>\\(\\$\\)[?]","30703":"The table shows ticket prices: Adult \\(\\$30,\\) Senior Citizen \\(\\$18,\\) Student \\(\\$12.\\) The number of student tickets sold was \\(\\dfrac{5}{11}\\) of the number of adult tickets sold. \\(\\dfrac{1}{9}\\) of the tickets sold were senior citizen tickets. A total of \\(\\$9372\\) was collected.<br>(a) What fraction of the tickets sold were student tickets?<br>(b) What was the total number of tickets sold?","30720":"An item has a sale price of \\(\\$68\\) and a usual price of \\(\\$80.\\) What is the percentage discount for the item? [?] %","30748":"At a shop, pens were only sold in boxes. A box of 6 ballpoint pens cost \\(\\$1.80\\) and a box of 4 gel pens cost \\(\\$6.40.\\)<br>(a) Sam spent \\(\\$10\\) to buy both types of pens. Find the least total number of ballpoint pens and gel pens bought by Sam. [?]<br>(b) Tom bought 22 more gel pens than ballpoint pens. The total number of pens he bought was more than 40 but fewer than 60. How many pens did Tom buy altogether? [?]","30749":"In January, a kindergarten was given a total sum of \\(\\$2400.\\) It spent 80% of the sum of money on books and the rest on stationery. In February, the sum given to the kindergarten was increased. It increased its spending on books by \\(\\$240.\\) It spent the remaining 20% of the sum given in February on stationery.<br>(a) How much did the kindergarten spend on stationery in January? [?]<br>(b) What was the percentage increase in the sum of money spent on stationery in February? [?] %","30761":"Every month, Gary saved \\(\\$300\\) of his salary and spent the rest. In December, his spending increased by 4% and he only managed to save \\(\\$240.\\) How much was his salary? [?]","30775":"In Country X, the height of six 10-cent coins is the same as the height of five 20-cent coins. Diagram 2 shows an unknown number of such 10-cent coins stacked to the same height as another stack of such 20-cent coins. The total value of the 2 stacks of coins in Diagram 2 is \\(\\$8.80.\\) Find the number of 10-cent coins used in Diagram 2. [?]","30812":"Adam had \\(\\$48\\) more than David. When David gave Adam \\(\\$21,\\) Adam had four times as much money as David. How much money did David have at first? [?]","30817":"Jane parked her car at a car-park from 12.35 pm to 5.20 pm. The parking rates are: First hour \\(\\$4.60\\); Every 30 minutes or part thereof \\(\\$2.00.\\) How much did she have to pay for parking? [?]","30819":"The ratio of the number of adults to the number of children at a concert was 5 : 3. The price of one adult ticket was \\(\\$45\\) while the price of a child ticket was \\(\\$23.\\) The total amount of money collected from the sale of tickets was \\(\\$5292.\\) How many adults attended the concert? [?]","30846":"The cost of a bag is increased from \\(\\$40\\) to \\(\\$50.\\) What is the percentage increase in the cost of the bag?<br>[?]%","30864":"The bar graph shows the ticket prices for the museums (Art \\(\\$16,\\) Toy \\(\\$12,\\) History \\(\\$28,\\) Science \\(\\$40\\)). The pie chart shows the tickets sold on Sunday (Art 86, Science 172, History 258, Toy 516). The History Museum collected the most money. What was the amount of money?<br>\\(\\$\\)[?]","30895":"The line graph shows the amount of money Jenny saved from January to June 2024 (Jan 30, Feb 60, Mar 80, Apr 60, May 60, Jun 40). She was given a monthly allowance of \\(\\$200.\\) (a) How much did she spend from March to May? \\(\\$\\) [?]<br>(b) What was the percentage increase in her saving from January to March? Round off to 2 decimal places. [?] %","30902":"Siti bought some hairclips at \\(\\$4\\) each and ribbons at \\(\\$2\\) each. \\(\\dfrac{1}{4}\\) of the items she bought were hairclips. The total amount of money spent on all the items was \\(\\$60.\\) How many hairclips and ribbons did she buy altogether?<br>[?]","30958":"At a concert, 60% of the tickets were sold at full price and 35% of the tickets were sold at half price. The remaining 70 tickets were given away free. The total amount of money collected was \\(\\$6510.\\)<br>(a) How many tickets were sold at full price? [?]<br>(b) What was the full price of a ticket? [?]","30965":"Mindy wanted to buy 36 identical pens with her money but she was short of \\(\\$7.80.\\) She decided to spend \\(\\dfrac{4}{7}\\) of her money on 15 identical pens and \\(\\dfrac{1}{2}\\) of the remaining money on a ruler.<br>(b) Find the cost of each pen. [?]<br>(c) How much did Mindy have at first? [?]","30992":"A vase was sold at a 40% discount for \\(\\$48.\\) What was the original price of the vase before the discount? [?]","31004":"The cost of an adult ticket to a concert was \\(\\$68.80.\\) The cost of a child ticket was \\(\\$32.80.\\) The total amount of money collected from ticket sales was \\(\\$28\\) 100 for a capacity of 500 people. How many adults attended the concert? [?]","31019":"Wenling had \\(\\$20.\\) After buying 4 identical plates, she had \\$z left. Express the cost of 1 plate in terms of z.","31026":"The price of a handbag was reduced from \\(\\$150\\) to \\(\\$120.\\) What was the percentage decrease in price of the handbag?","31042":"Farah and Sue shared the cost of an oven. Farah paid \\(\\$30\\) more than \\(\\dfrac{5}{8}\\) of the cost of the oven. Sue paid \\(\\$90.\\) How much did the oven cost? [?]","31093":"The table shows admission ticket prices: Child \\(\\$3\\)\\(y\\), Adult \\(\\$60,\\) Family Package (2 adults and 2 children) \\$(4\\(y\\) + 100). The zoo offers a 10% discount off the family package. If \\(y\\) = \\(\\$18\\) and the family uses the family package, how much will a family consisting of 2 adults and 2 children pay after the discount?<br>\\(\\$\\)[?]","31098":"A company offered 120 soft toys at a discount of 20% during a 5-day sale. After the sale, 24 soft toys were left unsold. The usual price of one soft toy was \\(\\$80.\\) What was the amount of money collected during the 5-day sale?<br>\\(\\$\\)[?]","31101":"In a bookshop, for every 3 files sold, 1 pencil case was sold. The total amount collected was \\(\\$1176.\\) The amount collected from files was \\(\\$147\\) more than the amount collected from pencil cases. Each pencil case was sold for \\(\\$3\\) more than a file. How many pencil cases were sold?<br>[?]","31122":"Mika had \\(\\$80.\\) She wanted to buy 25 muffins at \\(\\$7\\) each. How much money was she short of?<br>\\(\\$\\) [?]","31135":"The bar graph shows the number of each type of burgers sold at a fast food restaurant on a Friday. The prices are: Chicken \\(\\$4.50,\\) Vegetable \\(\\$3.80,\\) Fish \\(\\$4.20,\\) Beef \\(\\$5.50.\\)<br>The restaurant collected a total amount of \\(\\$437\\) from the sale of vegetable burgers. How many vegetable burgers were sold? [?]","31136":"The bar graph shows the number of each type of burgers sold at a fast food restaurant on a Friday. The prices are: Chicken \\(\\$4.50,\\) Vegetable \\(\\$3.80,\\) Fish \\(\\$4.20,\\) Beef \\(\\$5.50.\\) From the graph, Chicken = 150 sold and Fish = 85 sold.<br>What was the difference in the amount collected from the most popular burger sold and the least popular burger sold?<br>\\(\\$\\) [?]","31140":"Fredrick had some coupons to sell at a funfair. Each coupon cost \\(\\$5.\\) On the first day, he sold 264 coupons. On the second day, he sold \\(\\dfrac{1}{5}\\) of the remaining coupons. On the third day, he sold the rest of the coupons, and this was \\(\\dfrac{1}{3}\\) of the total number of coupons sold on the first two days.<br>(a) What fraction of the total number of coupons did Fredrick sell on the first day?","31141":"Fredrick had some coupons to sell at a funfair. Each coupon cost \\(\\$5.\\) On the first day, he sold 264 coupons, which was \\(\\dfrac{11}{16}\\) of the total. On the second day, he sold \\(\\dfrac{1}{5}\\) of the remaining coupons. On the third day, he sold the rest. What was the total amount of money Fredrick collected from the sale of coupons over the three days?<br>\\(\\$\\) [?]","31162":"Debbie bought a calculator and a printer at Great Store. She was given a 10% discount for both items. The usual prices are: calculator \\(\\$25,\\) printer \\(\\$95.\\) How much did she pay for both items?<br>\\(\\$\\) [?]","31173":"The line graph shows the amount of money Jackie spent from January to May. The values are: January \\(\\$550,\\) February \\(\\$800,\\) March \\(\\$330,\\) April \\(\\$610,\\) May \\(\\$830.\\)<br>Between which 2 months was there the greatest increase in the amount of money Jackie spent?","31230":"The usual price of a bicycle is \\(\\$400.\\) During a sale, there is a discount of 25% for the bicycle. Find the selling price of the bicycle inclusive of 9% GST. [?]"}}