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    The average age of a group of 13 men is 55 years. 2 men leave the group and the average age of group increases by 1 year. What is the average age of 2
    Question

    The average age of a group of 13 men is 55 years. 2 men leave the group and the average age of group increases by 1 year. What is the average age of 2 men who left the group?

    A.

    50.5 years

    B.

    48.5 years

    C.

    50 years

    D.

    49.5 years

    Correct option is D

    Given:

    • Total men = 13
    • Average age = 55 years
    • 2 men leave → new average becomes 56 years
    • Find the average age of the 2 men who left

    Solution:

    1. Total age of 13 men = 13 × 55 = 715 years
    2. After 2 men leave, remaining 11 men's total age = 11 × 56 = 616 years
    3. Age of the 2 men who left = 715 − 616 = 99 years
    4. Average age of the 2 men = 99 / 2 = 49.5 years

    Final Answer: (D) 49.5 years

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