Answer: 8099

Explanation:
Required number = Number of students of graduate level from institute R + Number of students of post graduate level from institute R
(17% of 27300) + (14% of 24700)
4641 + 2458
8099

Answer: 19:14

Explanation:
Required ratio
=> Number of students of post graduate level from
=> Institute S / number of students of graduate level from institute Q
=> (21% of 24700) / (14% of 27300)
=> 21 x 247 / 14 x 273
=> 19/13 = 19:14

Answer: 8463

Explanation:
Students of institute M at graduate level = 17% of 27300
 Students of institute S at graduate level = 14% of 27300
 Total number of students at graduate in institutes M and S
 (17 + 14)% of 27300
 31% of 27300 = 8463

Answer: 19:13

Explanation:
Required ratio
Number of students of post graduate level from
Institute S / number of students of graduate level from institute Q
(21% of 24700) / (13% of 27300)
21 x 247 / 13 x 273
19/13 = 19:13

Answer: 6669

Explanation:
Required number of students = number of students studying at post graduate level from institute N + number of students studying at post graduate level from institute P
15% of 24700 + 12% of 24700
27% of 24700
27 x 247 = 6669