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    Question

    The ratio of A and B present age is 4:3. The product of

    their ages is 4800. What will be the ratio of their ages after 5 years?
    A 9:5 Correct Answer Incorrect Answer
    B 13:8 Correct Answer Incorrect Answer
    C 17:7 Correct Answer Incorrect Answer
    D 17:13 Correct Answer Incorrect Answer

    Solution

    Let their present age be 4x and 3x respectively. Product of their ages = 12x² = 4800 => x² = 400 => x = 20 Present age of A = 4x = 80 years Present age of B = 3x = 60 years Ratio of their ages after 5 years = (80+5) : (60+5) = 85:65 = 17:13

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