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$
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
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 - Page 315: 44
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