SOLUTION: pump A can fill a pool in 11 hrs and pump B can empty the same pool in 4 hrs. accidentally, both the pumps started at the same time. how long it will take to empty the pool?

Question 841532: pump A can fill a pool in 11 hrs and pump B can empty the same pool in 4 hrs. accidentally, both the pumps started at the same time. how long it will take to empty the pool?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Rate of emptying is pools per hour.

pools per hour or HOURS per POOL.
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