Answer
$31\frac{1}{2}\ gal$
Work Step by Step
$\overset{21}/\!\!\!\!\!4\!2\times\frac{3}{\underset2/\!\!4}=\frac{21\times3}{2}=\frac{63}{2}=31\frac{1}{2}$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 1 - Section 1.8 - Multiplication and Division of Fractions - Exercise - Page 48: 35
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