Basic College Mathematics (9th Edition)

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

Chapter 7 - Measurement - 7.1 Problem Solving with U.S. Measurement Units - 7.1 Exercises - Page 485: 30

Answer

$\frac{15}{4}$ gal or 3.75 gal

Work Step by Step

15 qt = gal Use a unit fraction with gallon (the unit for your answer) in the numerator, and quarts (the unit being changed) in the denominator. Because 4 quarts (qt) = 1 gallon (gal), the necessary unit fraction is $\frac{1 gal}{4 qt}$ Multiply 15 qt times the unit fraction. 15 * $\frac{1 gal}{4 qt}$ = $\frac{15}{4}$gal = 3.75 gal
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