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    Question

    Average age of company A is 24 years and average age of

    both companies A and B is 12 years. If the ratio of number of employees in company A and B is 3:4, then what is the average age of company B?
    A 3 years Correct Answer Incorrect Answer
    B 4 years Correct Answer Incorrect Answer
    C 5 years Correct Answer Incorrect Answer
    D 6 years Correct Answer Incorrect Answer

    Solution

    Average of Company B = (12 × 7 - 3 × 24)/4 => (84 - 72)/4 = 3 years

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