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   18 to 12   9 to 6   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?   4   6   12   What is 46 percent of 75?   34.5   None of the choices   35   If there are 16 students and 2 teachers, what is the ratio of students to teachers in the class?   8 to 1   1 to 8   16 to 2   What is 15 percent of 200?   15   30   25