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: 40

Answer

20

Work Step by Step

To express a percent as a decimal, we can move the decimal point two places to the left. $P = 40\% = 0.4$ A is P percent of B A = PB $8 = (0.4)B$ $B = \frac{8}{0.4}$ $B = 20$
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