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    Question

    6 years ago ratio of the ages of the two persons A and B

    was 5:3. 3 years hence the ratio of their ages will be 4:3. Find the present age of B.
    A 20 years Correct Answer Incorrect Answer
    B 13 years Correct Answer Incorrect Answer
    C 15 years Correct Answer Incorrect Answer
    D 23 years Correct Answer Incorrect Answer

    Solution

    6 years ago, Let A’s age be 5x and B’s age be 3x. According to the question, 3 years hence, => (5x + 9)/(3x + 9) = 4/3 => 15x + 27 = 12x + 27 => x = 3 Present age of B = 3x + 6 = 3 × 3 + 6 = 15 years

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