Question

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

• A. $3$
• B. $7$
• C. $12$
• D. $23$

Answer 1

The correct option is C $12$

Number of boys $=20$
Number 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
$=40-9=31$
Number of boys behind Kamal in rank
$=43-31=12$

Hence the answer is option C