Chris can do a job in 9 hr, while Dana can do the same job in 5
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Chris can do a job in 9 hr, while Dana can do the same job in 5 hr. How long would it take them to do the job if they worked together?
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Related Book For
Intermediate Algebra
ISBN: 9780134895987
13th Edition
Authors: Margaret Lial, John Hornsby, Terry McGinnis
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