Prealgebra (7th Edition)

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

Chapter 7 - Section 7.2 - Solving Percent Problems with Equations - Exercise Set - Page 485: 62



Work Step by Step

Since $20\gt30$ and x% of 20 is 30, x must be greater than 100. $x\%\times20=30$ $\frac{x}{100}\times20=30$ $\frac{20x}{100}=30$ $\frac{20x}{100}\times100=30\times100$ $20x=3000$ $20x\div20=3000\div20$ $x=150\%$
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