Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 4 - Proportions, Percents, and Solving Inequalities - Chapter 4 Test - Page 185: 24

Answer

The percent increase in the number of problems assigned is 33.3%, or approximately 33%.

Work Step by Step

To find the percent change, we use the following formula: percent change = $\frac{New\ amount\ -\ Original\ amount}{Original\ amount}$ $\times$ 100% The original number of homework problems was 60. The new number of homework problems was 80. Substituting these values into the formula yields: percent change = $\frac{80\ -\ 60}{60}$ $\times$ 100% percent change = $\frac{20}{60}$ $\times$ 100% percent change = 0.333333 $\times$ 100% percent change = 33.3% $\approx$ 33%. The percent change in the number of problems assigned is 33.3%, or approximately 33%.
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