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: 8

Answer

n = 100

Work Step by Step

0.05n + 0.06(400-n) = 23 Multiply both sides by 100 to clear the equation of all decimals. 5n + 6(400-n) = 2300 Use the distributive property. 5n + 2400 - 6n = 2300 -n = 2300 - 2400 -n = -100 Divide both sides by -1. n = 100
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