maths

marcus has a box of chocolates. he eats 1/5 of them. his sister eats 1/3 of the chocolates that are left. there is 24 chocolates left in the box. how many where in the box to start with.

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  1. (1/5)x + (1/3 * 4/5)x + 24 = x

    (3/15)x + (4/15)x + 24 = x

    24 = (8/15)x

    24 / (8/15) = x

    24 * (15/8) = x

    45 = x

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    Ms. Sue

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