Question

There are 60 students in a class in which the girls are twice the number of boys. In a ranking, Ram got the 17th place from the top. If 9 girls are ahead of Ram, how many boys are there behind Ram in the ranking?

• A. 23
• B. 12
• C. 7
• D. 3
• E. None of the above

Answer 1

The correct option is B 12

Number of students behind Ram = 60 - 17 = 43
Let the number of boys = x
$\therefore$ Number of girls = 2x
$\therefore$ x + 2x = 60
$\Rightarrow x=\frac{60}{3}=20$
$\therefore$ Number of girls = 2 $\times$ 20 = 40
Number of girls behind Ram
= 40 - 9 = 31
$\therefore$ Number of boys behind Ram
= 43 - 31 = 12