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    Question

    A is 9 years older than B and B is 12 years younger than

    C. If the sum of the ages of A, B and C is 30 years, then what is B’s age after 12 years?
    A 21 years Correct Answer Incorrect Answer
    B 16 years Correct Answer Incorrect Answer
    C 19 years Correct Answer Incorrect Answer
    D 15 years Correct Answer Incorrect Answer

    Solution

    => A – B = 9 => C – B = 12 A + B + C = 30 According to question, => 9 + B + B + 12 + B = 30 => 3B = 9 => B = 3 years After 12 years B’s age = 3 + 12 = 15 years

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