Question

The ratio of boys to girls in a class is 2 to 3. If there are 4 boys in the class, how many girls are there?

Answer 1

Explanation:

Firstly, we can simplify the ratio of boys to girls to

1

:

2

.

Then, to find out how many students each ratio represents, we add up

1

and

2

to get

3

(

1

+

2

=

3

).

By dividing

3

by the number of students, we can find how many students ONE ratio represents:

24

3

=

8

.

So ONE ratio is equal to

8

boys. Since our simplified ratio of boys to girls is

1

:

2

already, we do not have to do further multiplying - the number of boys is simply

8

.

For the girls, simply multiply

2

by

8

to get

16

.

Check:

8

boys

+

18

girls

=

24

students

.