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"Kim is 15. Kim's father is 39. In how many years will Kim's father be exactly twice as old as Kim will be?"

  • Mathematics - ,

    let the number of years be x

    x+39 = 2(15+x)
    x+39 = 30 + 2x
    9 = x

    in 9 yrs from now, kim will be 24 and Kim's dad will be 48 , which is twice Kim's age.

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