Answer:
8 boys
Step-by-step explanation:
It's a ratio problem.
The ratio of boys to girls is 2:3
Since you know how many girls their are you plug it in
2:x
3:12
Basically you see how you get from 3 to 12 and the answer is to multiply by 4
Since it is a ratio problem you also multiply the 2 by 4
Your answer is 8 boys
