Multiple Choice Questions on A school has 4 sections of Chemistry in Class X having 40 35 45 and 42 students The mean marks........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A school has 4 sections of Chemistry in Class X having 40 35 45 and 42 students The mean marks...........

Quantitative Aptitude ( CCS) Average
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      A school has 4 sections of Chemistry in Class X having 40, 35, 45 and 42 students. The mean marks obtained in Chemistry test are 50, 60, 55 and 45 respectively for the 4 sections. Determine the over all average of marks per student.

    50.25

    Incorrect Answer

    52.25

    Correct Answer

    51.25

    Incorrect Answer

    53.25

    Incorrect Answer
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    Explanation:

     Required average marks

    = (40×50+35×60+45×55+42×45)/(40+35+45+42)

    = 8465⁄162 = 52.25

    By: Deepak Dawra
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