Answer
20%
Work Step by Step
A is P percent of B
A = PB
$18 = P~(90)$
$P = \frac{18}{90}$
$P = 0.2$
To express a decimal as a percent, we can move the decimal point two places to the right.
$P = 0.20 = 20\%$
18 is 20% of 90
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
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: 44
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