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JEE Main & Advanced Mathematics Statistics Question Bank Mean

  • question_answer
    A student obtain 75%, 80% and 85% in three subjects. If the marks of another subject are added, then his average cannot be less than                     

    A)                 60%        

    B)                 65%

    C)                 80%        

    D)                 90%

    Correct Answer: A

    Solution :

               Marks obtained from 3 subjects out of 300                    =\[75+80+85\]= \[240\]                    If the marks of another subjected is added, then the marks will be \[\ge \] 240 out of 400                    \ Minimum average marks \[=\frac{240}{4}=60%\],                 [When marks in the fourth subject = 0].


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