Number of students (in thousand) in two different universities in six different years What was the percentage increase in the number of students in university I in the year 2011 as compared to the previous year?
A) 135
B) 15
C) 115
D) 25
E) 35
Correct Answer: D
$ \therefore $ Required percentage $ =\frac{25000-20000}{20000}\times 100 $ $ =\frac{5000}{2000}\times 100 =25 $ %