Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 6 - Test: 9

Answer

The 8oz bottle is \$0.149/oz. The 12oz bottle is \$0.158/oz The 8oz bottle is the better buy

Work Step by Step

A unit rate has 1 in the denominator. $\frac{\$1.19}{8oz}=\frac{\$1.19\div8}{8oz\div8}=\frac{\$0.14875}{1oz}$ $\frac{\$1.89}{12oz}=\frac{\$1.89\div12}{12oz\div12}=\frac{\$0.1575}{1oz}$
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