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: 56

Answer

The percent decrease of the sale price from the regular price is 30%

Work Step by Step

We can find the decrease from the regular price to the sale price. $\$380 -\$266 = \$114$ We can express this decrease as a decimal of the regular price. $\frac{\$114}{\$380} = 0.30$ To express a decimal as a percent, we can move the decimal point two places to the right. $0.30 = 30\%$ The percent decrease of the sale price from the regular price is 30%
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