Nine out of ten students prefer math class over lunch. How many students do not prefer math if 200 students were asked?
17. You estimate that you can do 12 math problems in 45 minutes. How long should it take you to do 20 math problems?
18. A girl makes 12 foul shots for every 8 that she misses. How many shots did she make if she shot 125 foul shots?
19. The ratio of girls to boys in the 6th grade is 6 to 7. How many girls are there if there are 364 total students?