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: 40

Answer

The rate of the discount is 20%.

Work Step by Step

Let r represent the rate of the discount. A guideline for this problem would be: Original selling price - Discount = Discount sale price So, 40 - r $\times$ 40 = 32 40 - 40r = 32 40 - 32 = 40r 8 = 40r Divide both sides by 40: 0.2 = r Multiply the result by 100% to convert it to a percentage. 0.2 $\times$ 100% = 20% The rate of the discount is 20%.
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