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Mathematics, 14.10.2019 08:50 thomasgnathan

An inlet pipe on a swimming pool can be used to fill the pool in 36 hours. the drainpipe can be used to empty the pool in 40 hours. if the pool is 2/3 filled using the inlet pipe and then the drainpipe is accidentally 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 36 hours. the drainpipe can be used...
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