Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 2 - Solving Equations - Chapter Review - 2-7 and 2-8 Solving Proportions and Using Similar Figures: 50

Answer

12

Work Step by Step

First, you need to set up proportion: $\frac{25}{20}$=$\frac{15}{x}$. Then cross multiply, we have 300=25x. Then divide 300 by 25 => x=12
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