Mathematics, 28.10.2019 06:31, hooplikeapro

Acold water pipe can fill a swimming pool in 4 hours, and a hot water pipe in 6 hours. if cold water pipe is turned on and hot water pipe is turned on 3 hours later then how long will it take them to fill the pool together?

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Acold water pipe can fill a swimming pool in 4 hours, and a hot water pipe in 6 hours. if cold water...