Question

In science class, the girl to boy ratio is 3 to 7.

If there are 50 students total in the class, how many are boys

Answer 1

I would say that there are 29 boys in the class.

Answer 2

There are 35 boys in the class.

Explanation:

This question can be solved as a rule of three.

In science class, the girl to boy ratio is 3 to 7.

This means that for each 10 students, 7 of them are boys and 3 are girls.

So if for 10 students, 7 of them are boys, how many are boys for 50?

7 boys - 10 students

x boys - 50 students

`10x = 7*50`

`10x = 350`

`x = 35`

There are 35 boys in the class.