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28 January, 13:37

I can paint a house in 3 hours my friend in 5 hours. how fast together can we paint one house?

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  1. 28 January, 14:48
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    You: 1/3 in a hour

    Your friend : 1/5 a hour

    Together: 8/15 in a hour

    15/8 hours for one house
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