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30 December, 01:18

Mary can make a costume twice as fast as Sam can can. If they both work together, they can make it in 6 hours. How long will it take Mary to make the costume if she works alone?

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  1. 30 December, 03:35
    0
    2 hours

    Step-by-step explanation:

    Mary=x

    Sam=2x

    Mary+Sam=3x=6hours

    x=2hours
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