1.  The ratio of the number of boys and girls in a school is 3 : 2. If 20% of the boys and 25% of the girls are scholarship holders, then the percentage of the students who do not get the scholarship, is ?
A. 78%
B. 75%
C. 60%
D. 55%

Answer: Option A

Explanation:

 Let number of boys be 300.

 Number of girls = 200

 Boys holding scholarship = (20/100) x 300 = 60

 Girls holding scholarship = (25/100) x 200 = 50

 Total student holding scholarship = 60 + 50 = 110

∴ Percentage of students not holding scholarship = [(500 -110) / 500] x 100%

⇒ (390/500) x 100 %

⇒ 78%