Basic College Mathematics (9th Edition)

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

Chapter 5 - Ratio and Proportion - 5.2 Rates - 5.2 Exercises - Page 345: 34


Since \$0.047/ounce is less than \$0.049/ounce, Dazzle is the better buy.

Work Step by Step

Since Dazzle is concentrated to wash twice as many loads, 64 ounces is equivalent of 128 ounces. Dazzle $\frac{5.99}{128 ounces}$ = $\frac{5.99\div128}{128\div128 ounces}$ = $\frac{0.047}{1 ounce}$ = 0.047/ounce Spot-B-Gone $\frac{7.29}{150 ounces}$ = $\frac{7.29\div150}{150\div150 ounces}$ = $\frac{0.049}{1 ounce}$ = 0.049/ounce
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