Hey please help me! (Ratios) I will give brainliest when I can :)

Answer:
Step-by-step explanation:
The ratio of girl to boy is 3:7 => the ratio of girl to the entire class is 3:(3+7) = 3:10
So, there are 50 : 10 x 3 = 15 girls
And 50-15 = 35 boys.
:D