Answer
45sec
Work Step by Step
$\frac{3}{4}min=\frac{3}{4}min\times\frac{60sec}{1min}=\frac{180}{4}sec=45sec$
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 7 - Measurement - Summary Exercises - U.S. and Metric Measurement Units - Page 506: 16
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