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SSC Sample Paper SSC CGL - Sample Paper-1

  • question_answer
    The average of a marks in Mathematics for 5 students was found to be 50. Later, it was discovered that in the case of one student, the marks 48 were misread as 84. The correct average is

    A)  40.2                            

    B)  40.8

    C)  42.8                

    D)  48.2

    Correct Answer: C

    Solution :

    Total marks obtained by 5 students \[=50\times 5=250\] Now, in this total marks, 84 is included instead of 48 \[\therefore \] Correct total marks             \[=250-84+48=214\] \[\therefore \] Correct average \[=\frac{214}{5}\]             \[=42.8\]


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