Mathematics, 26.11.2019 17:31 smoov23

Apump can fill a swimming pool in 8 hours. the pool also has a drain that can empty the pool in 10 hours. if someone turns on the pump to fill the pool, but forgets to shut the drain, how long would it take for the pool to fill?

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Apump can fill a swimming pool in 8 hours. the pool also has a drain that can empty the pool in 10 h...