SOLUTION: Pump A can fill a tank in 10 hours. Pump B can empty the same tank in 15 hours. If both pumps are in operation, how long will it take to fill the tank?
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Question 903951: Pump A can fill a tank in 10 hours. Pump B can empty the same tank in 15 hours. If both pumps are in operation, how long will it take to fill the tank? Answer by ewatrrr(24785) (Show Source):
