While finding the average marks of a class, Vikas's marks were wrongly entered as 98 in place of 89 . Due to this error, the average marks of the class were 0.25 more than the actual average. What is the number of students in the class?
Answer & explanation
Correct answer: option 4
Due to error, Difference in the total marks of class will be = 98 - 89= 9
Change in Avg. due the same will be = \(\frac{9}{no.\:of\:student}\) = 0.25
So, No. of students = 9 x 4 = 36