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16 January, 04:58

The ages of Rahul and Haroon are in ratio 7:5. Four year later the sum of their ages will be 56 years. Find their present ages.

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Answers (2)
  1. 16 January, 06:30
    0
    A : x/y = 7/5

    then "

    A : x = 7y / 5

    B : x + 4 + y + 4 = 56

    then "

    B : x = 48 - y

    from A & B "

    7y / 5 = 48 - y

    7y = 240 - 5y

    12y = 240

    y = 20

    from A,

    x / y = 7 / 5

    x / 20 = 7 / 5

    x = 28

    hence,

    rahul ' s age = x = 28

    haroon ' s age = y = 20
  2. 16 January, 06:50
    0
    Let r = Rahul's age and h = Haroon's age. Then:-

    r = 1.4h (because 7/5 = 1.4)

    r + 4 + h + 4 = 56

    r + h = 48

    Substituting r = 1.4h:-

    1.4h + h = 48

    h = 48 / 2.4 = 20

    and r = 48 - h = 48 - 20 = 28

    So answer is Rahul is 28 and Haroon is 20 years old at the present time.
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