Pie Charts - General Aptitude

The following pie-charts show the distribution of students of graduate and post-graduate levels in seven different institutes in a town.

Distribution of students at graduate and post-graduate levels in seven institutes:

Q1:

What is the ratio between the number of students studying at post-graduate level from institutes S and the number of students studying at graduate level from institute Q?

A 13 : 19

B 21 : 13

C 13 : 8

D 19 : 13

ANS:D - 19 : 13

Required ratio = (21% of 24700) = (21 x 24700) = 19 .
(13% of 27300) 13 x 27300 13