Question: Suppose that a large pump can empty a swimming pool in 50 hours and a small pump can empty the pool in 80 hours. How

Suppose that a large pump can empty a swimming pool in 50 hours and a small pump can empty the pool in 80 hours. How long will it take to empty the pool if both pumps are used?

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Suppose that a large pump can empty a swimming pool in 50 hours and a small pump can empty the pool in 80 hours. How long will it take to empty the pool if both pumps are used? 1 answer

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