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    Question

    The average of 5 positive

    integers was initially computed as 30. However, it was discovered later that an error had occurred during the calculation, as 12 was mistakenly recorded instead of 21. Determine the accurate average.
    A 45.5 Correct Answer Incorrect Answer
    B 36.2 Correct Answer Incorrect Answer
    C 31.8 Correct Answer Incorrect Answer
    D 22.5 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Incorrect sum of ive numbers = 30 X 5 = 150 Correct sum = 150 - 12 + 21 = 159 So, correct average = 159 ÷ 5 = 31.8

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