Question

In a class of 36 students, the number of boys are twice the number of girls. In the class, there are 13 boys before Reema (girl) whose position is 19^th in the class. How many girls are there in the class after Reema?
1. 6
2. 5
3. 12
4. 10

Answer 1

Correct Answer - Option 1 : 6

Total students in a class = 36.

Let the number of girls be G, then number of boys will be 2G (according to the question), therefore, 

G + 2G = 36

3G = 36

G = 12

Thus, the number of girls = 12

And, the number of boys = 24

Now, according to question,

Position of Reema in class = 19th

Number of students before Reema = 19 - 1 = 18

Number of boys before Reema = 13 (given)

Therefore, number of girls before Reema = 18 - 13 = 5

Number of girls after Reema (girl) = Total girls - 5 - 1 

= 12 - 5 - 1 

= 6

Hence, there are 6 girls after Reema.