Elementary Algebra

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

Chapter 4 - Proportions, Percents, and Solving Inequalities - 4.3 - More on Percents and Problem Solving - Problem Set 4.3 - Page 162: 62

Answer

t = 9.3

Work Step by Step

0.4(t - 3.8) = 2.2 Use the distributive property. 0.4t - 1.52 = 2.2 Multiply both sides by 100 to clear the equation of all decimals. 40t - 152 = 220 Add 152 to both sides. 40t = 372 Divide both sides by 40. t = 9.3
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