Add the percentages spent, then find the original amount from the remainder.<br><br>\\(\begin{aligned}<br>\text{Total spent} &= 20\% + 35\% = 55\%<br>\\<br>\text{Money left} &= 100\% - 55\% = 45\%<br>\\<br>45\% &\rightarrow \$9<br>\\<br>1\% &\rightarrow \$9 \div 45 = \$0.20<br>\\<br>100\% &\rightarrow \$0.20 \times 100 = \$20<br>\end{aligned}\\)<br><br>Final Answer: \$20