Answer
12.5 oz medicine is needed for 20 oz water.
Work Step by Step
$\frac{5\ oz\ medicine}{8\ oz\ water} = \frac{x}{20\ oz\ water}$
$8x = 5 \times20$
$\frac{8x}{8} = \frac{100}{8}$
$x= 12.5$
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0321825535
ISBN 13:
978-0-32182-553-7
Chapter 5 - Ratio and Proportion - 5.5 Solving Application Problems with Proportions - 5.5 Exercises - Page 363: 10
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