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: 36

Answer

The original price of the monitor was 135 dollars.

Work Step by Step

Let s represent the original price. We can use the following guideline to solve this problem: Original selling price - Discount = Discount sale price s - 10% $\times$ s = 121.50 s - 0.1s = 121.50 0.9s = 121.50 Divide both sides by 0.9: s = 135 The original price of the monitor was 135 dollars.
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