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21 December, 21:47

Mark bed takes up 2/5 of the floor space in his room. If Mark''s room takes up 1/8 of the floor space in his house, what fraction of the floor space in the entire house does this bed take up?

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  1. 21 December, 22:13
    His bed is 2/5 of his room, which is 1/8th of the house. In order to know how much of the entire houre the bed takes we have to multiply this: (2/5) * (1/8). When we multiply fractions, we can multiply "independently" the numerator and denominator, like this:

    (2*1) / (5*8)

    That's 2/40, or 1/20. So his bed takes up 1/20 of his house.
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