gmat prep qn 4

[sidnim]

At a certain university, the ratio of the number of teaching assistants to the number of students in any course must be greater than 3:80. At this university, what is the maximum number of students possible in a course that has 5 teaching assistants?
130
131
132
133
134

SPOILER:
Official Answer d

[CTG1983]

80*5/3=133.33

[hsj]

133.33 - so if you approximate it to 134, the ratio 5/134 will be less than 3/80.

Since it has to be greater than 3/80, 133 is the max no of students.