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: 44

Answer

30 minutes

Work Step by Step

Cindy completes 1/20 = .05 jobs per minute. Sharon can do 1/x jobs per minute. Thus: $ 1/12 = .05 + 1/x \\ 1/x = .03333 \\ x = 30$
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