Question

In a class of 60, where girls are twice that of boys, Kamal ranked seventeenth from the top. if there are 9 girls ahead of Kamal, how many boys are after him in rank ?

• A. 3
• B. 7
• C. 12
• D. 23
• E. 32

Answer 1

Answer: (C)

12

Let the number of boys be x. Then, numbers of girls $=2x$.
$\therefore x+2x=60or3x=60orx=20.$
So, number of boys = 20 and numbers of girls = 40.
Number of students behind Kamal in rank $=(60-17)=43$.
Number of girls ahead of Kamal in rank = 9.
Number of girls behind Kamal in rank $=40-9=31$.
$\therefore$ Number of boys behind Kamal in rank $=43-31=12$.