[
  {
    "index": 400,
    "id": 4118,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 5,
    "answers": [
      "5",
      "75",
      "750",
      null
    ],
    "question_preview": "15 x 50 <br>= 15 x <input min=\"0\" type=\"number\" id=\"imp5pg004q12a_1\" class=\"lineinput\" placeholder=\"?\"> x 10 <br>= <input min=\"0\" type=\"number\" id=\"im",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "15x50 = 15x5x10 = 75x10 = 750. Blanks: 5, 75, 750 - correct."
  },
  {
    "index": 401,
    "id": 4120,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 811,
    "answers": [
      "811",
      "9",
      "7299",
      "729900"
    ],
    "question_preview": "811 x 900 <br>= <input min=\"0\" type=\"number\" id =\"imp5pg004q12c_1\" class=\"lineinput\" placeholder=\"?\" /> x <input min=\"0\" type=\"number\" id =\"imp5pg004q",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "811x900=811x9x100=7299x100=729900. Blanks: 811, 9, 7299, 729900 - correct."
  },
  {
    "index": 402,
    "id": 4121,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 415,
    "answers": [
      "415",
      "9",
      "3735",
      "3735000"
    ],
    "question_preview": "415 x 9000 <br>=<input min=\"0\" type=\"number\" id =\"imp5pg004q12d_1\" class=\"lineinput\" placeholder=\"?\" /> x <input min=\"0\" type=\"number\" id =\"imp5pg004q",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "415x9000=415x9x1000=3735x1000=3735000. Blanks: 415, 9, 3735, 3735000 - correct."
  },
  {
    "index": 403,
    "id": 4122,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 6,
    "answers": [
      "6",
      "2",
      "3",
      null
    ],
    "question_preview": "60 ÷ 20 <br>= 60 ÷ 10 ÷ 2 <br>= <input min=\"0\" type=\"number\" id =\"imp5pg004q13a_1\" class=\"lineinput\" placeholder=\"?\" /> ÷ <input min=\"0\" type=\"number\"",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "60/20 = 60/10/2 = 6/2 = 3. Blanks: 6, 2, 3 - correct."
  },
  {
    "index": 404,
    "id": 4123,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 6,
    "answers": [
      "6",
      "144",
      "6",
      "24"
    ],
    "question_preview": "1440 ÷ 60 <br>= 1440 ÷ 10 ÷ <input min=\"0\" type=\"number\" id =\"imp5pg004q13b_1\" class=\"lineinput\" placeholder=\"?\" /> <br>= <input min=\"0\" type=\"number\"",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "1440/60 = 1440/10/6 = 144/6 = 24. Blanks: 6, 144, 6, 24 - correct."
  },
  {
    "index": 405,
    "id": 4124,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 4,
    "answers": [
      "4",
      "20",
      "4",
      "5"
    ],
    "question_preview": "20000 ÷ 4000 <br>= 20000 ÷ 1000 ÷ <input min=\"0\" type=\"number\" id =\"imp5pg004q13c_1\" class=\"lineinput\" placeholder=\"?\" /> <br>= <input min=\"0\" type=\"n",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "20000/4000 = 20000/1000/4 = 20/4 = 5. Blanks: 4, 20, 4, 5 - correct."
  },
  {
    "index": 406,
    "id": 4125,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 9,
    "answers": [
      "9",
      "108",
      "9",
      "12"
    ],
    "question_preview": "108000 ÷ 9000 <br>= 108000 ÷ 1000 ÷ <input min=\"0\" type=\"number\" id =\"imp5pg004q13d_1\" class=\"lineinput\" placeholder=\"?\" /> <br>= <input min=\"0\" type=",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "108000/9000 = 108000/1000/9 = 108/9 = 12. Blanks: 9, 108, 9, 12 - correct."
  },
  {
    "index": 407,
    "id": 4132,
    "type": 2,
    "verdict": "NEEDS_REVISION",
    "correct_index": 56,
    "answers": [
      "52",
      null,
      null,
      null
    ],
    "question_preview": "There are 1040 boys and 1092 girls in a school. Each class has 41 pupils. <br>There are <input min=\"0\" type=\"number\" id=\"imp5pg005q3_1\" class=\"lineinp",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "ANSWER CORRECT (52 classes) but correct_index=56 is WRONG. Math: (1040+1092)/41=52. Fix ci to 52."
  },
  {
    "index": 408,
    "id": 4134,
    "type": 2,
    "verdict": "NEEDS_REVISION",
    "correct_index": 1242,
    "answers": [
      "1500",
      null,
      null,
      null
    ],
    "question_preview": "Leonard received \\(\\$5300\\) as his salary this month.<br>He deposited \\(\\$800\\) into his bank.<br>Then, he divided the remaining money equally into th",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "ANSWER CORRECT (1500) but correct_index=1242 is WRONG. Math: (5300-800)/3=1500. Fix ci to 1500."
  },
  {
    "index": 409,
    "id": 4138,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 15,
    "answers": [
      "15",
      null,
      null,
      null
    ],
    "question_preview": "Grand Uncle Joe is jogging slowly around a square field.<br>Each side of the field has a length of 100 metres.<br>If Grand Uncle Joe takes 1 minute to",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "Perimeter=400m. 3 rounds=1200m. Time=1200/80=15 min. Correct."
  },
  {
    "index": 410,
    "id": 4139,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 1200,
    "answers": [
      "1200",
      null,
      null,
      null
    ],
    "question_preview": "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 ba",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "25x128=3200 oranges. 3200/8=400 bags. 400x3=$1200. Correct."
  },
  {
    "index": 411,
    "id": 4140,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 9744,
    "answers": [
      "9744",
      null,
      null,
      null
    ],
    "question_preview": "A rectangular piece of carpet is placed on the floor of a function room leaving a margin of 1 metre around it.<br>The room measures 31 m by 18 m. If t",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "Carpet: (31-2)x(18-2)=29x16=464 m2. Cost: 464x21=$9744. Correct (margin interpretation)."
  },
  {
    "index": 412,
    "id": 4141,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 1820,
    "answers": [
      "1820",
      null,
      null,
      null
    ],
    "question_preview": "There are 35 rows of chairs in a school hall.<br>From the 1st row to the 10th row, there are 42 chairs in each row.<br>For the rest of the rows, there",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "10x42 + 25x56 = 420 + 1400 = 1820. Correct."
  },
  {
    "index": 413,
    "id": 4165,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 0,
    "answers": [
      "4000",
      "3900",
      "3800",
      "3000"
    ],
    "question_preview": "What is the value of 429 x 9? Round off your answer to the nearest thousand.",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "429x9=3861, nearest thousand=4000. Answer[0] correct."
  },
  {
    "index": 414,
    "id": 4166,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 2,
    "answers": [
      "7024445",
      "724499",
      "720455",
      "719499"
    ],
    "question_preview": "Which of the following when rounded off to the nearest thousand is 720000?",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "720455 rounds to 720000. Answer[2] correct. Others: 7024445->7024000, 724499->724000, 719499->719000."
  },
  {
    "index": 415,
    "id": 4178,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 8,
    "answers": [
      "8",
      "9",
      null,
      null
    ],
    "question_preview": "Using the digits from 0 to 9, find the digits A and B such that <br> <input min=\"0\" type=\"number\" id =\"imp5pg019q6_1\" class=\"lineinput\" placeholder=\"?",
    "image": "/images/questions/imp5_question_image/imp5pg019q6.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg019q6.png). Question text truncated (missing equation). Answers [8,9] self-consistent. Cannot verify without image."
  },
  {
    "index": 416,
    "id": 4205,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 0,
    "answers": [
      "$$\\frac{11}{18}$$",
      "$$\\frac{5}{15}$$",
      "$$\\frac{1}{3}$$",
      "None of the above"
    ],
    "question_preview": "Express the answer in its simplest form where necessary. <hr> $$\\dfrac{11}{36}$$ + $$\\dfrac{11}{36}$$ = ______",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "11/36+11/36=22/36=11/18. Answer[0] correct."
  },
  {
    "index": 417,
    "id": 4206,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 2,
    "answers": [
      "$$\\frac{6}{14}$$",
      "$$\\frac{3}{7}$$",
      "$$\\frac{23}{24}$$",
      "None of the above"
    ],
    "question_preview": "Express the answer in its simplest form where necessary. <hr> $$\\dfrac{23}{48}$$ + $$\\dfrac{23}{48}$$ = _______",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "23/48+23/48=46/48=23/24. Answer[2] correct."
  },
  {
    "index": 418,
    "id": 4207,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 0,
    "answers": [
      "$$\\frac{1}{4}$$",
      "$$\\frac{3}{12}$$",
      "$$\\frac{7}{15}$$",
      "None of the above"
    ],
    "question_preview": "Express the answer in its simplest form where necessary.<br><hr> $$\\frac{2}{3}-\\frac{5}{12}$$ = _______",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "2/3-5/12=8/12-5/12=3/12=1/4. Answer[0] correct (simplest form)."
  },
  {
    "index": 419,
    "id": 4208,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 1,
    "answers": [
      "$$\\frac{2}{1}$$",
      "$$\\frac{11}{42}$$",
      "$$\\frac{4}{11}$$",
      "None of the above"
    ],
    "question_preview": "Express the answer in its simplest form where necessary.<br><hr> $$\\frac{3}{7}-\\frac{1}{6}$$ = ________",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "3/7-1/6=18/42-7/42=11/42. Answer[1] correct."
  },
  {
    "index": 420,
    "id": 4209,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 2,
    "answers": [
      "$$\\frac{7}{6}$$",
      "$$\\frac{6}{4}$$",
      "$$\\frac{3}{20}$$",
      "None of the above"
    ],
    "question_preview": "Express the answer in its simplest form where necessary.<br><hr> $$\\frac{9}{10}-\\frac{3}{4}$$ = _______",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "9/10-3/4=18/20-15/20=3/20. Answer[2] correct."
  },
  {
    "index": 421,
    "id": 4210,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 2,
    "answers": [
      "$$\\frac{4}{8}$$",
      "$$\\frac{1}{2}$$",
      "$$\\frac{5}{24}$$",
      "None of the above"
    ],
    "question_preview": "Express the answer in its simplest form where necessary.<br><hr> $$\\frac{7}{12}-\\frac{3}{8}$$ = _______",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "7/12-3/8=14/24-9/24=5/24. Answer[2] correct."
  },
  {
    "index": 422,
    "id": 4223,
    "type": 2,
    "verdict": "NEEDS_REVISION",
    "correct_index": 0,
    "answers": [
      "0.33",
      null,
      null,
      null
    ],
    "question_preview": "Express $$\\frac{1}{3}$$ as a decimal and round off your answer to 2 decimal places. <br>Answer =  <input min=\"0\" type=\"number\" id=\"imp5pg031q6a_1\" cla",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "ANSWER CORRECT (0.33) but correct_index=0 is WRONG. Math: 1/3=0.333 rounded to 2dp=0.33. Fix ci to 0.33."
  },
  {
    "index": 423,
    "id": 4249,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 3,
    "answers": [
      "1$$\\frac{1}{2}$$",
      "1$$\\frac{1}{3}$$",
      "1$$\\frac{1}{4}$$",
      "1$$\\frac{2}{3}$$"
    ],
    "question_preview": "Jack had 10 litres of orange juice. He poured it equally into 6 bottles.<hr> How much orange juice (in litres) would be in each bottle?",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "10/6=5/3=1 2/3. Answer[3] correct."
  },
  {
    "index": 424,
    "id": 4262,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 1,
    "answers": [
      "1$$\\frac{11}{20}$$",
      "2$$\\frac{1}{20}$$",
      "2$$\\frac{1}{10}$$",
      "2$$\\frac{9}{10}$$"
    ],
    "question_preview": "How much further (in km) is the library than the school from Pauline's home?",
    "image": "/images/questions/imp5_question_image/imp5pg038q9.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg038q9.png). Distance comparison. Trust answer key."
  },
  {
    "index": 425,
    "id": 4265,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 0,
    "answers": [
      "4$$\\frac{9}{20}$$",
      "4$$\\frac{11}{20}$$",
      "3$$\\frac{19}{20}$$",
      "4$$\\frac{15}{20}$$"
    ],
    "question_preview": "Find the distance (in km) between Pauline's school and the library.",
    "image": "/images/questions/imp5_question_image/imp5pg038q9.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg038q9.png). Distance between school and library. Trust answer key."
  },
  {
    "index": 426,
    "id": 4276,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 0,
    "answers": [
      "$$\\frac{13}{20}$$",
      "$$\\frac{14}{15}$$",
      "$\\frac{7}{10}$",
      "$\\frac{11}{20}$"
    ],
    "question_preview": "Newton's water bottle contained \\(\\$1\\)\\frac{1}{2}$ litres of water. He drank $\\frac{2}{5}$ litres of the water and gave $\\frac{9}{20}$ litres of it t",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "1 1/2 - 2/5 - 9/20 = 30/20 - 8/20 - 9/20 = 13/20. Answer[0] correct."
  },
  {
    "index": 427,
    "id": 4381,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 1,
    "answers": [
      "AB",
      "BC",
      "XC",
      "AC"
    ],
    "question_preview": "If the height is AX, the base is ____.",
    "image": "/images/questions/imp5_question_image/imp5pg067q1.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg067q1.png). Triangle base/height identification. Trust answer key."
  },
  {
    "index": 428,
    "id": 4382,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 0,
    "answers": [
      "KM",
      "LM",
      "NM",
      "LK"
    ],
    "question_preview": "If the height is LN, the base is ____.",
    "image": "/images/questions/imp5_question_image/imp5pg067q2.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg067q2.png). Triangle base/height identification. Trust answer key."
  },
  {
    "index": 429,
    "id": 4383,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 0,
    "answers": [
      "EF",
      null,
      "DF",
      null
    ],
    "question_preview": "If the height is DE, the base is ____.",
    "image": "/images/questions/imp5_question_image/imp5pg067q3.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg067q3.png). Answers has nulls at indices 1,3 (only 2 real options). Trust answer key."
  },
  {
    "index": 430,
    "id": 4384,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 0,
    "answers": [
      "XZ",
      "ZY",
      "YZ",
      "XW"
    ],
    "question_preview": "For triangle XYZ, <br>If the height is XY, the base is ____.",
    "image": "/images/questions/imp5_question_image/imp5pg067q4.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg067q4.png). Height XY->base XZ. Trust answer key."
  },
  {
    "index": 431,
    "id": 4385,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 2,
    "answers": [
      "WZ",
      "XY",
      "YZ",
      "XZ"
    ],
    "question_preview": "For triangle XYZ, <br>If the height is XW, the base is ____.",
    "image": "/images/questions/imp5_question_image/imp5pg067q4.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg067q4.png). Height XW->base YZ. Geometrically consistent (perp from X to YZ)."
  },
  {
    "index": 432,
    "id": 4386,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 0,
    "answers": [
      "RT",
      "ST",
      "RU",
      "UT"
    ],
    "question_preview": "If the base is SU, the height is ____.",
    "image": "/images/questions/imp5_question_image/imp5pg068q5.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg068q5.png). Base SU->height RT. Trust answer key."
  },
  {
    "index": 433,
    "id": 4387,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 0,
    "answers": [
      "IJ",
      "GI",
      "HI",
      null
    ],
    "question_preview": "For triangle GHI, <br> if the base is GH, the height is ____.",
    "image": "/images/questions/imp5_question_image/imp5pg068q6.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg068q6.png). Base GH->height IJ. Trust answer key."
  },
  {
    "index": 434,
    "id": 4388,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 0,
    "answers": [
      "HI",
      "JI",
      "GH",
      null
    ],
    "question_preview": "For triangle GHI, <br>if the base is GI, the height is ____.",
    "image": "/images/questions/imp5_question_image/imp5pg068q6.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg068q6.png). Base GI->height HI. Right triangle at I consistent."
  },
  {
    "index": 435,
    "id": 4389,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 0,
    "answers": [
      "ST",
      null,
      "TU",
      null
    ],
    "question_preview": "If the base is RU, the height is ____.",
    "image": "/images/questions/imp5_question_image/imp5pg068q7.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg068q7.png). Base RU->height ST. Trust answer key."
  },
  {
    "index": 436,
    "id": 4390,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 2,
    "answers": [
      "SQ",
      "TR",
      "PS",
      "PR"
    ],
    "question_preview": "For triangle PQR, <br>if the base is QR, the height is ____.",
    "image": "/images/questions/imp5_question_image/imp5pg068q8.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg068q8.png). Base QR->height PS. Perpendicular from P to QR consistent."
  },
  {
    "index": 437,
    "id": 4393,
    "type": 2,
    "verdict": "NEEDS_REVISION",
    "correct_index": 4,
    "answers": [
      "3",
      "4",
      "6",
      null
    ],
    "question_preview": "Find the area of each shaded triangle.<br><hr> Area of triangle A = <input min=\"0\" type=\"number\" id=\"imp5pg069q9a_3\" class=\"lineinput\" placeholder=\"?\"",
    "image": "/images/questions/imp5_question_image/imp5pg069q9.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg069q9.png). correct_index=4 does NOT match answers[0]=3. Three blanks (A,B,C areas) but CI likely wrong. Fix ci to 3 or verify against image."
  },
  {
    "index": 438,
    "id": 4426,
    "type": 1,
    "verdict": "GOOD",
    "correct_index": 1,
    "answers": [
      "205 cm²",
      "215 cm²",
      "245 cm²",
      "300 cm²"
    ],
    "question_preview": "A triangle of height 5 cm and base 4 cm is cut from one corner of a square paper. <hrThe length of the square paper is 15 cm, find the area of the rem",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "Square area=15x15=225. Triangle area=1/2x4x5=10. Remaining=225-10=215 cm2. Answer[1] correct."
  },
  {
    "index": 439,
    "id": 4442,
    "type": 2,
    "verdict": "NEEDS_REVISION",
    "correct_index": 25,
    "answers": [
      "10",
      "25",
      null,
      null
    ],
    "question_preview": "PQRS is a rectangle. PT is $$\\dfrac{10}{1}$$ of QT. <hr> PT = <input min=\"0\" type=\"number\" id =\"imp5pg084q2_1\" class=\"lineinput\" placeholder=\"?\" /> <b",
    "image": "/images/questions/question_image/q1550839344.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (q1550839344.png). PT=10/1 of QT means PT:QT=10:1. Answers [10,25]: if PT=10, QT=1, PQ=11 not 25. Inconsistent - CI=25=answers[1]. Verify against image for actual dimensions."
  },
  {
    "index": 440,
    "id": 4454,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 2,
    "answers": [
      "9",
      "2",
      null,
      null
    ],
    "question_preview": "The ratio of the number of spiders to the number of beetles is <br><input min=\"0\" type=\"number\" id=\"imp5pg088q2a_1\" class=\"lineinput\" placeholder=\"?\">",
    "image": "/images/questions/imp5_question_image/imp5pg088q2.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg088q2.png). Ratio spiders:beetles. Answers [9,2], ci=2 matches second blank. Trust answer key."
  },
  {
    "index": 441,
    "id": 4455,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 9,
    "answers": [
      "2",
      "9",
      null,
      null
    ],
    "question_preview": "The ratio of the number of beetles to the number of spiders is <br><input min=\"0\" type=\"number\" id=\"imp5pg088q2b_1\" class=\"lineinput\" placeholder=\"?\">",
    "image": "/images/questions/imp5_question_image/imp5pg088q2.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg088q2.png). Ratio beetles:spiders (reverse of 4454). Answers [2,9], ci=9 matches second blank. Trust answer key."
  },
  {
    "index": 442,
    "id": 4477,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 9,
    "answers": [
      "4",
      "9",
      "7",
      null
    ],
    "question_preview": "Jackson has 7 blue toy cars, 4 red toy cars and 9 green toy cars. What is the ratio of the number of red toy cars to the number of green toy cars to t",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "Red:green:blue = 4:9:7. Answers [4,9,7], ci=9 matches second blank. All correct."
  },
  {
    "index": 443,
    "id": 4479,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 1,
    "answers": [
      "1",
      "2",
      null,
      null
    ],
    "question_preview": "The ratio of the length of B to the total length of A, B and C is <input min=\"0\" type=\"number\" id =\"imp5pg092q5b_1\" class=\"lineinput\" placeholder=\"?\" ",
    "image": "/images/questions/imp5_question_image/imp5pg092q5.png",
    "solution": null,
    "hints_count": 0,
    "note": "IMAGE-DEPENDENT (imp5pg092q5.png). Ratio B:total of A+B+C. Answers [1,2], ci=1 matches first blank. Trust answer key."
  },
  {
    "index": 444,
    "id": 4512,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 100,
    "answers": [
      "100",
      null,
      null,
      null
    ],
    "question_preview": "The ratio of the number of Ali's marbles to the number of Ahmad's marbles is 4 : 1. If Ali gives Ahmad 30 marbles, they will have the same number of m",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "Ali:Ahmad=4:1. After -30/+30 they equal. 4u-30=1u+30 -> 3u=60 -> u=20. Total=5u=100. Correct."
  },
  {
    "index": 445,
    "id": 4788,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 63,
    "answers": [
      "63",
      null,
      null,
      null
    ],
    "question_preview": "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? ",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "7% tax on $900 = 0.07x900 = $63. Correct."
  },
  {
    "index": 446,
    "id": 4789,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 120,
    "answers": [
      "120",
      null,
      null,
      null
    ],
    "question_preview": "Molly has \\(\\$4000\\) in a fixed deposit savings account. The bank pays 3% interest per year for the fixed deposit account. <br>How much interest will ",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "3% interest on $4000 = 0.03x4000 = $120. Correct."
  },
  {
    "index": 447,
    "id": 4791,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 3000,
    "answers": [
      "3000",
      null,
      null,
      null
    ],
    "question_preview": "Kenny puts \\(\\$50000\\) into an endowment fund that pays an interest of 6% per year. <br>How much interest does he earn after one year? <br> Answer : $",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "6% interest on $50000 = 0.06x50000 = $3000. Correct."
  },
  {
    "index": 448,
    "id": 4794,
    "type": 2,
    "verdict": "NEEDS_REVISION",
    "correct_index": 9,
    "answers": [
      "9.1",
      null,
      null,
      null
    ],
    "question_preview": "The price of a ticket to a show was \\(\\$130\\) before tax of 7%. <br> How much was the tax? <br>Answer : $ <input min=\"0\" type=\"number\" id=\"imp5pg177q1",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "ANSWER CORRECT (9.1) but correct_index=9 is WRONG. Math: 7% tax on $130 = 0.07x130 = $9.10. Fix ci to 9.1."
  },
  {
    "index": 449,
    "id": 4797,
    "type": 2,
    "verdict": "GOOD",
    "correct_index": 150,
    "answers": [
      "150",
      null,
      null,
      null
    ],
    "question_preview": "Anna puts \\(\\$15000\\) into a savings account with an interest rate of 1% per year. <br> How much interest does she earn after 1 year? <br>Answer : $ <",
    "image": null,
    "solution": null,
    "hints_count": 0,
    "note": "1% interest on $15000 = 0.01x15000 = $150. Correct."
  }
]