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10 March, 13:24

Blue marbles, green marbles and red marbles are in a ratio of 5 to 7 to 8 in a box. if the total number of marbles is 240, how many green marbles are in the box?

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  1. 10 March, 16:06
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    The fraction of marbles in the box that is green = ⁷/ (₅₊₇₊₈₎

    = ⁷/₂₀

    If there are 240 marbles in the box, then the number of green marbles = (240 * ⁷/₂₀) = 84 marbles

    ∴ 84 of the marbles in the bag are green.
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