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    Question

    The average marks of Priya in 8 subjects was mentioned as

    59. Her marks in English and Biology were wrongly recorded as 61 and 48, whereas they should have been 70 and 65. What is her actual average?
    A 28.55 Correct Answer Incorrect Answer
    B 33.55 Correct Answer Incorrect Answer
    C 62.25 Correct Answer Incorrect Answer
    D 71.43 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Total based on incorrect entry = 59 × 8 = 472

    Correct sum = 472 - (61 + 48) + (70 + 65) = 498

    Actual average = 498 ÷ 8 = 62.25

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