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Discussion

  1. The ratio of ages of the father and the daughter at present is 3 : 1. Four year ago the ratio was 4 : 1 . The average age of the father and daughter 2 year hence will be
    1. 24
    2. 26
    3. 25
    4. 36
  1. Correct Option: D

    Let the present ages of father be 3x and daughter be x .
    so the 4 year ago father's age and daughter's age was
    ( 3x - 4 ) and ( x - 4 )
    ⇒ ( 3x - 4 / x -4 ) = 4 / 1
    ∴ x = 12 year and 3x = 36 year


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