SOLUTION: suppose that a small pump can empty a swimming pool in 60 hours and that a large pump can empty a pool in 40 hours. working together, how long will it take to empty the pool?
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Question 459510: suppose that a small pump can empty a swimming pool in 60 hours and that a large pump can empty a pool in 40 hours. working together, how long will it take to empty the pool? Answer by scott8148(6628) (Show Source):
