1.  A group of 1200 persons consisting of boys and girls is travelling in a Bus. For every 15 boys there is one girl. The number of girls in the group is ?
A. 60
B. 65
C. 70
D. 75

Answer: Option D

Explanation:

If there are x girls, then

x + 15x = 1200

16x = 1200

x= 1200/16 = 75