8. Riverside has 270 seventh grade students, and its ratio of boys to girls is 5:4. Salem has
180 seventh grade students, and its ratio of boys to girls is 4:5. The two towns hold a carnival, and all
seventh grade students from both towns attend. How many seventh grade students at the carnival are
girls?
[A] 220
[B] 225
[C] 230
[D] 100