Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 7 - Algebraic Fractions - 7.6 - More Fractional Equations and Problem Solving - Problem Set 7.6: 41

Answer

It will take 30 minutes.

Work Step by Step

The inlet pipe is working at 1/5=.2 tanks per minute while the outlet pipe is working at 1/6=.167 tanks per minute. Thus: $ 1 = .2t - .167t \\ 1 = .0333t \\ t = 30$
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