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    Question

    Ratio of present ages of A and B is 5:7, respectively. C

    who is 9 years older than A will become 36 years older after 12 years. Find the present age of B.
    A 21 years Correct Answer Incorrect Answer
    B 20 years Correct Answer Incorrect Answer
    C 25 years Correct Answer Incorrect Answer
    D 27 years Correct Answer Incorrect Answer

    Solution

    Let, present ages of A and B be ‘5x’ years and ‘7x’ years respectively. So, 5x + 9 = 36 – 12 5x = 15 x = 3 Present age of B = 7x = 21 years

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