Mathematics, 15.04.2020 21:29 naomifelixwoo
An inlet pipe on a swimming pool can be used to fill the pool in 18 hours. The drain pipe can be used to empty the pool in 45 hours. If the pool is 25 filled and then the inlet pipe and drain pipe are opened, how long from that time will it take to fill the pool?
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An inlet pipe on a swimming pool can be used to fill the pool in 18 hours. The drain pipe can be use...
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