Percentage of students in various courses (A,B,C,D,E,F) and Percentage of girsl out of these.
Total students : 1200
(800 girls +400 boys )

For which pair of courses in the number of boys the same ?

Options

A. E & F
B. A & D
C. C & F
D. B & D

Answer

C

Explanation

Numbr of boys in course `E=12%` of 1200-14% of 800=144-112=32
in course F=13% of 1200-14% of 800=15-112=44
in course A=20% of 1200-30% of 800=420-240=0
in course D=35% of 1200-30% of 800=420-240=180
in course C=5% of 1200-2% of 800=60-16=44
Obviously pair c and F is our answer.