In a mixed college 160 students are there in one class. Out of this 160 students 1/4 students are girls. How many boys are there ?
Choices:
A) 40
B) 60
C) 80
D) 120
E) 140

Rationale: total number of students : 160 total girls : 160 * 1 / 4 = 40 total boys : 160 - 40 = 120 answer is d
Answer: D