In 6th grade, there are 5 boys for every 4 girls. If there are 198 6th graders, how many boys are there?

5:4

5+4=9

198/9=22

22*5=

110:88

there are 110 boys

We are given 5 boys for every four girls. We could set up an equation and solve for x.

5x+4x=198

9x=198

x=22

now plug in x = 22 back for 5x to find the total number of boys

5 (22) = 110 boys

we could also let x = 22 for 4x to find the total number of girls (even though we're not asked to do this)

4 (22) = 88 girls