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 Review Problem Set - Page 183: 33


The percent increase is 25%.

Work Step by Step

To find the percent change, we use the following formula: Percent of change = $\frac{New\ amount\ -\ Original\ amount}{Original\ amount}$ $\times$ 100% The original length was 8 centimeters, and the new length is 10 centimeters. Substituting these values into the formula yields: Percent change = $\frac{10-8}{8}$ $\times$ 100% Percent change = $\frac{2}{8}$ $\times$ 100% Percent change = 0.25 $\times$ 100% Percent change = 25%
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