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    Question

    The average weight of 25 students in a classroom was

    found to be 52 kg. Later, it was discovered that one student’s weight was taken as 59 kg instead of 49 kg, and another's was taken as 44 kg instead of 54 kg. What is the correct average weight?
    A 75 Correct Answer Incorrect Answer
    B 52 Correct Answer Incorrect Answer
    C 45 Correct Answer Incorrect Answer
    D 25 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Correct average = {(25 × 52) – 59 – 44 + 49 + 54}/25

    = {1300 – 103 + 103}/25

    = 1300 / 25

    = 52 kg

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