Multiple Choice Questions on Ina class the average score of thirty students on a test is 69 Later on it was found that the score ........... for SSC CGL Exam Preparation

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Multiple Choice Questions

Ina class the average score of thirty students on a test is 69 Later on it was found that the score ...........

Quantitative Aptitude (CGL) Average
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    Ina class, the average score of thirty students on a test is 69. Later on it was found that the score of one student was wrongly

    read as 88 instead of 58. The actual average score is:

    This questions was previously asked in
    SSC CGL 9th March 2020 Shift-3
    View All ssc Previous Year Papers

    58

    Incorrect Answer

    88

    Incorrect Answer

    69

    Incorrect Answer

    68

    Correct Answer
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    Explanation:

    When data read wrongly then total score of thirty students on a test = 69 30 = 2070
    (Average = sum of all terms/number of terms)
    Difference in data = 88 - 58 = 30
    Actual score = 2070 - 30 = 2040
    Actual average score = 2040/30 = 68

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