Asked by M, S, E
Abigail and Bailey wash dogs to make extra money. Abigail can wash all of the dogs in 5 hours. Bailey can wash all the dogs in 3 hours. How long will it take them to wash the dogs if they work together?
Answers
Answered by
Reiny
Ab's rate --- 1/5
Bail's rate ---- 1/3
combined rate = 1/5 + 1/3 = 8/15
combined time = 1/(8/15) = 15/8 hrs
= 1 7/8 hrs
Bail's rate ---- 1/3
combined rate = 1/5 + 1/3 = 8/15
combined time = 1/(8/15) = 15/8 hrs
= 1 7/8 hrs
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