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    Question

    The average age of a group of 15 persons is found

    to be 30 years. Later it is found that age of two of the persons is calculated as 35 and 52 instead of 60 and 12. Find the correct average age of the group.
    A 28 years Correct Answer Incorrect Answer
    B 25 years Correct Answer Incorrect Answer
    C 29 years Correct Answer Incorrect Answer
    D 20 years Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Required average = {(15 × 30) – 35 – 52 + 60 + 12}/15 = 29 years

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