The average marks of 100 students are given to be 40. It was found later that marks of one student were 53 which were misread as 83. The corrected mean marks are
A
39
B
39.7
C
40
D
40.3
Correct Answer: Option B
Explanation
This is a classic CSAT problem about averages. A similar question appeared in 2016 where a person's income increased, and we had to find the new average income.