Comprehension Passage
Directions : The following line graph shows the total number of students studying (UG + PG) and the number of students studying UG in five different colleges A, B, C, D and E.

If Number of students studying PG in college B is increased by x% then the ratio between the number of students studying PG in college B to UG in college B is 24: 25. Find the value of x.
1
40
2
20
3
25
4
30
5
10