Question

In science class the ratio to girls to boys is 3 to 7.

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

Answer 1

35

Explanation:

Assume 3x is the number of boys in the class.

And 7x as for the girls.

3x+7x=50

10x=50

x=5

Thus, 7*5=35 boys in the science class

Hope this is helpful!

Answer 2

15 boys

Explanation:

7+3=10

10x5=50

there are 3 boys so

3x5=15