The following pie-charts show the distribution of students of graduate and post-graduate levels in seven different institutes in a town.
Common Information Question: 4/5
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 $Q$?
13 : 19
21 : 13
13 : 8
19 : 13
Error(s) Found !!!