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23 December, 12:50

If it takes 8 hours for Sanya to build a fence, and it takes 6 hours for Sean to build the same fence, how long will it take them working together?

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  1. 23 December, 14:16
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    3 3/7 hours

    Step-by-step explanation:

    (8*6) / (8+6) = 48/14 = 3 3/7 hours
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