2. Questions Bank
  3. SSC
  4. Quantitative Aptitude
  5. Average

SSC Quantitative Aptitude Average Question Bank Average (II)

  • question_answer
    The average marks of 40 students in an English exam is 72. Later it is found that three marks 64, 62 and 84 were wrongly entered as 68, 65 and 73. The average after mistakes were rectified is

    A) 70

    B) 72

    C) 71.9

    D) 72.1

    Correct Answer: D

    Solution :

    [d] Total marks of 40 students \[=40\times 72=2880\] Rectified total marks \[=2880-68-65-73+64+62+84\] \[=2884\] thus, rectified average             \[=\frac{2884}{40}=72.1\]


You need to login to perform this action.
You will be redirected in 3 sec spinner