Mathematics, 12.04.2021 21:00 poppyme

An inlet pipe on a swimming pool can be used to fill the pool in 30 hours. The drain pipe can be used to empty the pool in 34 hours. If the pool is 15 filled and then the inlet pipe and drain pipe are opened, how long from that time will it take to fill the pool? no links please

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An inlet pipe on a swimming pool can be used to fill the pool in 30 hours. The drain pipe can be use...

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