Question

Mike observed that 75% of the students of a school liked skating. If 35 students of the school did not like skating, the number of students who liked skating was ______. (only put numeric values, no other symbols)

Answer 1

35 students   -    25 % ( or 1/4 of the all students )
35 * 4 = 140
140 - 35 = 105
Answer:
The number of students who liked skating was 105.

Answer 2

100 % - 75 % = 25 %

25 % = 1/4 of 100 %
75 % = 3/4 of 100 %

35 students = 25 % 

35 * 3 = 105

If 35 students of the school did not like skating, the number of students who liked skating was 105.