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SSC Sample Paper SSC CGL - Sample Paper-22

  • question_answer
    The average of marks of 14 students calculated as 71. But it was later found that the marks of one student had been wrongly entered as 42 instead of 56 and of another as 74 instead of 32. The correct average is

    A) 67                                

    B) 68

    C) 69                    

    D) 71

    Correct Answer: C

    Solution :

    Total marks of 14 students \[=14\times 71\] \[=994\] New total marks of students             \[=994-42-74+56+32\] \[=966\] \[\therefore \] New average of marks \[=\frac{966}{14}=69\]         


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