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Math

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One-third of Derick's age two years ago is equal to a quarter of his age four years from now. How old is he now?

Please provide the following:
-Representation
-Equation
-Solution
-Answer
-Checking

  • Math -

    Let x = Derick's age now.

    (x-2)/3 = (x+4)/4

    Solve for x.

    4(x-2) = 3(x+4)
    x = 12+8 = 20
    Two years ago he was 18. 1/3 of that is 6
    Four years from now he is 24. 1/4 of that is also 6.

  • Math -

    Factorize 2x2square+8x - 10=0

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