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Multiple Choice Questions

A Mathematics teacher tabulated the marks secured by 35 students of 8th class The average of t...........

Quantitative Aptitude ( CCS) Average
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     A Mathematics teacher tabulated the marks secured by 35 students of 8th class. The average of their marks was 72. If the marks secured by Reema was written as 36 instead of 86 then find the correct average marks up to two decimal places.

    73.41

    Incorrect Answer

    74.3

    Incorrect Answer

    72.43

    Incorrect Answer

    73.43

    Correct Answer
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    Explanation:

     Correct average = [35×72+(86−36)]/35

    ≈ 72 + 1.43 = 73.43

    By: Deepak Dawra
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