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    Question

    4 years ago, the ratio of the ages of A and B was 2:3

    and after 4 years it will become 4:5. Find their present ages.
    A 12 yrs, 16 yrs Correct Answer Incorrect Answer
    B 11 yrs, 19 yrs Correct Answer Incorrect Answer
    C 10 yrs, 18 yrs Correct Answer Incorrect Answer
    D 15 yrs, 20 yrs Correct Answer Incorrect Answer

    Solution

    4 years ago, Let the ratio of ages of A and B = 2x:3x According to the question, => (2x + 8)/(3x + 8) = 4/5 => 10x + 40 = 12x + 32 => x = 4 Present age of A = 2x + 4 = 12 years   Present age of B = 3x + 4 = 16 years  

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