Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 8 - Personal Finance - 8.1 Percent, Sales Tax and Discounts - Exercise Set 8.1: 55

Answer

The percent decrease of the sale price from the regular price is 15%

Work Step by Step

We can find the decrease from the regular price to the sale price. $\$840 -\$714 = \$126$ We can express this decrease as a decimal of the regular price. $\frac{\$126}{\$840} = 0.15$ To express a decimal as a percent, we can move the decimal point two places to the right. $0.15 = 15\%$ The percent decrease of the sale price from the regular price is 15%
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