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Adamu spends 3/5 of his monthly allowance on food and 1/4 of the allowance on his learning materials. If the amount he spent on food and learning materials is #330 less than his allowance, how much is his monthly allowance?

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8 answers

  1. f = (3/5) a
    e = (1/4) a

    f + e = a - 330
    so
    (3/5)a + (1/4 a) = a - 330 multiply everything by 20
    12 a + 5 a = 20 a - 6600
    3 a = 6600
    a = 2200

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  2. I dont get the solving

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