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 - Page 495: 41



Work Step by Step

To express a percent as a decimal, we can move the decimal point two places to the left. $P = 24\% = 0.24$ A is P percent of B A = PB $40.8 = (0.24)B$ $B = \frac{40.8}{0.24}$ $B = 170$
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