Mathematics, 26.07.2019 01:40 reinaelane77

Tom and becky can paint jim's fence together in $12$ hours. if all people paint at the same rate, how many hours would it take to paint the fence if huck joins tom and becky, and all three of them paint jim's fence together?

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Tom and becky can paint jim's fence together in $12$ hours. if all people paint at the same rate, ho...