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2 August, 19:06

18 PIEces of chalk 1:2 is not yellow, how many are yellow

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  1. 2 August, 20:38
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    1:2 = x:2x

    There are 3x pieces of chalk in total

    18 = 3x

    x = 6

    Therefore 12 pieces are not yellow since 2x are not yellow in the ratio 1:2
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