Mathematics, 22.07.2019 06:50 jinkiesandrosie

Three different hoses, each with its own pump, can be used to fill a swimming pool. if hose a is used by itself, the pool takes 6 h to fill. is hose b is used by itself, the pool takes 3 h to fill. if hose c is used by itself, the pool takes 2 h to fill. if all three hoses are used at the same time, how long does the pool take to fill?

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