## Basic College Mathematics (9th Edition)

Published by Pearson

# Chapter 5 - Ratio and Proportion - 5.2 Rates - 5.2 Exercises: 35

At \$0.175/ounce after the coupon, Brand P is the best buy. #### Work Step by Step After subtracting the coupon savings, find the cost per unit for each brand. Brand G$\frac{(2.39 - 0.60)}{10 ounces}$=$\frac{1.79}{10 ounces}$=$\frac{1.79\div10}{10\div10 ounces}$=$\frac{0.179}{1 ounce}$= 0.179/ounce Brand K$\frac{3.99}{20.3 ounces}$=$\frac{3.99\div20.3}{20.3\div20.3 ounces}$=$\frac{0.197}{1 ounce}$= 0.197/ounce Brand P$\frac{(3.39 - 0.50)}{16.5 ounces}$=$\frac{2.89}{16.5 ounces}$=$\frac{2.89\div16.5}{16.5\div16.5 ounces}$=$\frac{0.175}{1 ounce}\$ = 0.175/ounce

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