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    Question

    The average score of 30 boys in a group test is recorded

    as 35. However, it was later discovered that two scores of 30 were mistakenly recorded as 40, and one score of 29 was incorrectly noted as 21. What is the correct average score of the group?
    A 38.7 Correct Answer Incorrect Answer
    B 34.6 Correct Answer Incorrect Answer
    C 39.3 Correct Answer Incorrect Answer
    D 40.2 Correct Answer Incorrect Answer

    Solution

    The correct answer is B

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