The ratio of boys and girls in a class is 1:2 and the classroom has 24 students. How many boys would have to be admitted to make ratio of boys to girls 1:1?

The ratio of boys and girls in a class is 1:2 and the classroom has 24 students. How many boys would have to be admitted to make ratio of boys to girls 1:1?

A 6

B 8

C 10

D 12

Solution

Correct Answer: Option B

B + G = 24

B/G = 1/2

2B = G

Now,

B + 2B = 24

or, 3B = 24

or, B = 8

Then,

8 + G = 24

or, G = 24 - 8

or, G = 16

To make 1:1,

The amount of boys must be equal to Girls.

Thus, additional (16 - 8) or 8 boys is required.