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 11   12 to 7   What is 51 percent of 492?   None of the choices   250.92   10.36   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   There are 4 black rabbits and twice as many grey rabbits as brown rabbits. If there are 16 grey rabbits, then what is the ratio of brown to black rabbits?   2 to 1   16 to 4   8 to 4   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   4   12