Basic College Mathematics (9th Edition)

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

Chapter 5 - Ratio and Proportion - Review Exercises - Page 375: 70


(a) A 7 lb cat should be given 1400 milligrams. (b) An 8 oz kitten should be given 100 milligrams.

Work Step by Step

(a) $\frac{1000\ mg}{5\ lb} = \frac{x\ mg}{7\ lb}$ $5x = 1000*7$ $\frac{5x}{5} = \frac{7000}{5}$ $x = 1400$ mg (b) $\frac{1000\ mg}{5\ lb} = \frac{x\ mg}{\frac{1}{2}\ lb}$ $5x = 1000*\frac{1}{2}$ $\frac{5x}{5} = \frac{500}{5}$ $x = 100$ mg
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