March 30, 2017

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kristyn is 4 yrs younger than mario.three years from now she will be two thirds as old as mario. find the present age

  • algebra - ,

    Mario --- x
    Kristyn --- x-4

    3years from now:
    Mario ---- x+3
    Kristyn--- x-1

    "Three years from now, she will be 2/3 Mario's age"
    ----> (x-1) = (2/3)(x+3)

    3x-3 = 2x+6

    So now Mario is 9 and Krystyn is 5

    check out both conditions stated, it works

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