Question

    The average score of Neha in 5 subjects was recorded as 62.

    However, her marks in Science and History were mistakenly entered as 49 and 60 instead of 59 and 72. What is her correct average score?
    A 28.5 Correct Answer Incorrect Answer
    B 33.5 Correct Answer Incorrect Answer
    C 66.4 Correct Answer Incorrect Answer
    D 76.6 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Sum of marks according to wrong data = 62 × 5 = 310

    Correct total marks = 310 - (49 + 60) + (59 + 72) = 332

    Actual average marks = 332 ÷ 5 = 66.4

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