What is 15 percent of 200?   15   30   25   If there are 16 students and 2 teachers, what is the ratio of students to teachers in the class?   1 to 8   16 to 2   8 to 1   4 boys have green eyes, 12 boys have blue, and 7 have brown. What is the ratio of boys who have blue eyes to those that don't?   12 to 4   12 to 7   12 to 11   Bob just got his driver's license and now he has to drive his brothers and sisters to and from school. If the ratio of brothers to sisters is 4 to 1 and he has 3 sisters, then how many brothers does Bob have?   6   12   4   Bill is 4 years older than Jill and 2 years younger than David. If Jill is 12, then what is the percent of years she is older than David?   None of the choices   9 to 6   18 to 12