the ratio of boys to girls at north middle school is 3 boys to every 4 girls. if the seventh grade has 120 girls, how many total students are in the seventh grade.

I think there would be 90 boys if there were 120 girls.

Hope this helps!

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐