Maths

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John spent 3/4 of his saving money for a birthday present and 1/7 of his saving money for clothes.He had only $27 left.a)What fraction of his total money he had spent?What Fraction of his money has left?b)what is the total of his money did he save from the beginning?

  • Maths -

    (3/4)x + (1/7)x + 27 = x
    times 28
    21x + 4x + 756 = 28x

    at this point I can tell that he spent 25/28 of his money
    and he would have 3/28 of it left over

    25x + 756 = 28x
    3x = 756
    x = 252

    state you conclusions

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