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1 September, 14:20

Lee has 3 children, the oldest is twice as old as the oungest, the middle is 5 years older than the youngest, the sum of the childrens agre is 57, how old is eaach child

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  1. 1 September, 17:18
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    Oldest sibling = 2x = 2 (13) = 26

    Middle child = x + 5 = 13 + 5 = 18

    Smallest kid = x = 13
  2. 1 September, 17:46
    0
    Oldest = 2x

    Middle = x + 5

    Youngest = x

    2x + x + 5 + x = 57

    combine like terms

    4x + 5 = 57

    subtract 5 from both sides

    4x = 52

    divide both sides by 4 to isolate x

    x = 13

    Oldest = 2x = 2 (13) = 26

    Middle = x + 5 = 13 + 5 = 18

    Youngest = x = 13
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