Question

    While tabulation of marks scored in an examination by

    the students of a class, by mistake the marks scored by one student got recorded as 93 in place of 63, and thereby the average marks increased by 0.5. What was the number of students in the class?
    A 20 Correct Answer Incorrect Answer
    B 30 Correct Answer Incorrect Answer
    C 15 Correct Answer Incorrect Answer
    D 60 Correct Answer Incorrect Answer

    Solution

    The correct answer is D

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