Mathematics, 09.03.2022 18:00, rhlalbin

One pump can fill a swimming pool in 6 hours. A second pipe drains the pool in 9 hours. If the the pool starts empty, what part of the pool will be filled if the first pipe works for 5 hours and the second pipe works for 6 hours.

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One pump can fill a swimming pool in 6 hours. A second pipe drains the pool in 9 hours. If the the p...