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    Question

    TYPE 1

    Average age of company A is 23 years and average age of

    both companies A and B is 15 years. If the ratio of number of employees in company A and B is 3:8, then what is the average age of company B?
    A 10 years Correct Answer Incorrect Answer
    B 11 years Correct Answer Incorrect Answer
    C 8 years Correct Answer Incorrect Answer
    D 12 years Correct Answer Incorrect Answer
    E 6 years Correct Answer Incorrect Answer

    Solution

    Average of Company B = (15 × 11 - 3 × 23)/8   => (165 - 69)/8 = 12 years

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