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      Question

      The average age of a group of 24 persons is found to be

      30 years. Later it is found that age of two of the persons is calculated as 30 and 60 instead of 56 and 10. Find the correct average age of the group.
      A 28 years Correct Answer Incorrect Answer
      B 29 years Correct Answer Incorrect Answer
      C 30 years Correct Answer Incorrect Answer
      D 22 years Correct Answer Incorrect Answer

      Solution

      Required average = {(24 ├Ч 30) тАУ 30 тАУ 60 + 56 + 10}/24 = 29 years

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