Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 7 - Section 7.3 - Solving Percent Problems with Proportions - Practice: 9

Answer

308

Work Step by Step

15.4 is 5 % of what number ? 5 is percent what number is base 15.4 is amount $\frac{15.4}{b}$=$\frac{5}{100}$ set cross product equal 5$\times$ b = 15.4 $\times$ 100 Multiply 5b= 1540 divide both sides by 5 $\frac{5b}{5}$ = $\frac{1540}{5}$ b= 308 52 is 65 % of 80.
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