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    Question

    The average of ten positive numbers is calculated as 56.

    On observing, it was found that two numbers 64 and 32 are wrongly interpreted as 76 and 52, respectively. Find the correct average of the numbers.
    A 45.8 Correct Answer Incorrect Answer
    B 52.8 Correct Answer Incorrect Answer
    C 66.6 Correct Answer Incorrect Answer
    D 22.8 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Sum of ten numbers = 56 × 10 = 560 Correct sum of ten numbers = 560 - (76 + 52) + (64 + 32) = 528 Therefore, correct average = 528 / 10 = 52.8

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