the difference between a number and its 3 - fourth is 100 . what is 25 % of that number ?	Select:
A) 120
B) 100
C) 125
D) 150
E) none of these

Rationale: explanation : solution : let the number be x . then , x - 3 / 4 x = 100 = > x / 4 = 100 = > x = 400 . 25 % of x = 25 % of 400 = 25 / 100 * 400 = 100 . answer : b
Answer: B