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
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0321825535
ISBN 13:
978-0-32182-553-7
Chapter 5 - Ratio and Proportion - Review Exercises - Page 375: 64
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