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31 December, 14:15

A boy is 24 years younger than his father. In 2 years time the sun of their ages will be 40. Find the present ages of father and son

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Answers (2)
  1. 31 December, 15:40
    0
    Let the age of the boy be x.

    Therefore the age of the father = x + 24. (The boy is 24 years younger implies that

    his father is older by 24 years).

    In 2 years time:

    The boy will be = (x + 2).

    The father will be (x + 24 + 2) = (x + 26).

    Sum of their ages = 40.

    Therefore (x+2) + (x + 26) = 40.

    x + x + 2 + 26 = 40

    2x + 28 = 40

    2x = 40 - 28

    2x = 12.

    x = 12/2 = 6. x = 6.

    Present ages = x, x + 24. = 6, (6 + 24) = 6, 30.

    Boy = 6 years old.

    Father = 30 years old.

    Cheers.
  2. 31 December, 17:29
    0
    Ooh fun

    x=boy

    y=father

    x+24=y

    (x+2) + (y+2) = 40

    subsitute x+24=y into equation

    x+2+x+24+2=40

    add like terms

    2x+28=40

    subtract 28 from both sides

    2x=40

    divide both sides by 2

    x=son now=20

    father=son+24

    father=20+24=44

    father=44

    son=20
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