# Challenge Exercises: Consumer Math

Directions: Solve each problem below by entering a whole number, a dollar amount with cents, or a percent. If your answer is a percent, do NOT enter the percent symbol. For each exercise below, click once in the ANSWER BOX, type in your answer and then click ENTER. After you click ENTER, a message will appear in the RESULTS BOX to indicate whether your answer is correct or incorrect. To start over, click CLEAR.

 1 At Furnace Woods school, 297 of students take the bus. If this number is 90% of the school enrollment, then how many students are enrolled? ANSWER BOX:    RESULTS BOX:
 2 A basketball team won 60% of 125 games played in a season? How many games is that? ANSWER BOX:    RESULTS BOX:
 3 On a roofing job, 21 out of 416 shingles had to be rejected for minor defects. What percent is this? (Round your answer to the nearest percent.) ANSWER BOX:  %  RESULTS BOX:
 4 In a fashion boutique, a coat that regularly sell for \$150 is marked, "Get  off." What is the sale price of the coat?  ANSWER BOX:  \$  RESULTS BOX:
 5 David arranges a 36-month car loan of \$19,000 at 12.75% annual interest. Assuming equal monthly payments on principal and interest, how much will he pay monthly? (Round your answer to the nearest cent.) ANSWER BOX:  \$  RESULTS BOX:
 6 Gisele put \$800 into a savings account that earns 6.5% simple interest for the first 3 months and 2.25% simple interest for the next 9 months. How much will she have after 1 year? ANSWER BOX:  \$  RESULTS BOX:
 7 The commission rate paid to a sales rep varies according to the type of equipment sold. If her monthly statement showed \$124,600 in sales and her total commission was \$4,438, then what was her rate of commission to the nearest tenth of a percent? ANSWER BOX:  %  RESULTS BOX:
 8 An interior designer is able to purchase a sofa from a design center for \$1,457. Her client would have to pay \$1,880 for the same sofa. What rate of discount did the designer receive for the sofa? ANSWER BOX:  %  RESULTS BOX:
 9 The output of an electrical circuit increases from 19 amperes to 22 amperes. What is the percent increase in the output? (Round your answer to the nearest tenth of a percent.) ANSWER BOX:  %  RESULTS BOX:
 10 The reading on a pressure valve decreases from 36 psi to 30 psi. What is the percent decrease in pressure? (Round your answer to the nearest tenth of a percent.) ANSWER BOX:  %  RESULTS BOX: