Answer:
There are 350 girls
Step-by-step explanation:
boys: girls: total
5 7 5+7
5 7 12
We can use proportions to solve this. Put the number of girls over the total number.
girls 7 girls x girls
--------- = --------------= ----------------
total 12total 600 total
Using cross products
7 * 600 = x*12
Divide each side by 12
7*600/12 = x
350 = x
There are 350 girls
