Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10:
ISBN 13:

Chapter 5 - Ratio and Proportion - Test - Page 375: 6

Answer

Regular Sandwich is the best buy at $\frac{0.86 Dollar}{inches}$.

Work Step by Step

To find the rates we need to find Dollar per ounce. So. Writing all options as a ratio. Small = $\frac{5.99 Dollar}{5 inches}$ Regular = $\frac{6.89 Dollar}{8 inches}$ Large = $\frac{10 Dollar}{11 inches}$ Now, we need to find the lowest terms. Small = $\frac{5.99 Dollar}{5 inches} \approx \frac{1.20 Dollar}{inches} $ Regular = $\frac{6.89 Dollar}{8 inches} \approx \frac{0.86 Dollar}{inches}$ Large = $\frac{10 Dollar}{11 inches} \approx \frac{0.91 Dollar}{inches}$ Now comparing all the rates Regular Sandwich is the best buy at $\frac{0.86 Dollar}{inches}$.
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