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math

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sara spent 20.00 of her money on a gift for her mom, than half of her remaining money on a gift for her dad. sara last gift , for her brother, cost her 15.00. she left with 10.00. how much money did she start with?

  • math -

    Let X be what she started out with.

    X-20 -(1/2)(X-20)-15 = 10
    (1/2)(X-20) = 25
    X-20= 50
    X = 70

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