Mathematics, 12.11.2020 16:00, ana9340

A cold 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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A cold water pipe can fill a swimming pool in 4 hours, and a hot water pipe in 6 hours. If cold wate...