While preparing the results of English of a class, the marks of one student got recored as 95 in place of 57, as a result of which there was an increase in the average score by 0.95. How many students were here in the class?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 40
Explanation:
Increase in score of the candidate = 95 - 57 = 38
Increase in average = 0.95
Let the number of students = n
⇒ = 0.95
⇒ n = = 40
Hence the number of students in the class are 40.