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 184: 48

Answer

His new time would be 202.4 minutes.

Work Step by Step

A guideline for this problem would be New time = Current time - Amount of time reduced The amount of time reduced is found by multiplying the current time by the percent change. So: New time = 220 - 220 $\times$ 8% New time = 220 - 220 $\times$ 0.08 New time = 220 - 17.6 New time = 202.4 His new time would be 202.4 minutes.
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