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: 64

Answer

The best buy is the 75 foot roll.

Work Step by Step

$\frac{0.78}{25}$ = 0.031/ft $\frac{(1.99 - 0.50)}{75}$ = $\frac{1.49}{75}$ = 0.020/ft $\frac{(2.59 - 0.50)}{100}$ = $\frac{2.09}{100}$ = 0.021/ft
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