Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 5 - Exponents and Polynomials - Chapters 1-5 Cumulative Review Problem Set - Page 234: 57



Work Step by Step

Let the unknown number be $x$. 15 percent of $x$ refers to the expression $(\frac{15}{100}\times x)$. Since fifteen percent of $x$ is 6, we obtain: Step 1: $(\frac{15}{100}\times x)=6$ Step 2: $15x=6\times100$ Step 3: $x=\frac{600}{15}=\frac{200}{5}=40$
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