Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 9 - Basic Algebra - 9.8 Using Equations to Solve Application Problems - 9.8 Exercises: 33

Answer

The number is $20$.

Work Step by Step

Let $x =$ the number $\frac{1}{2}x + 2x = 50$ $\frac{x}{2} + 2x = 50$ $x + (2x \times 2) = (50 \times 2)$ $x + 4x = 100$ $5x = 100$ $x = \frac{100}{5}$ $x = 20$
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