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?   16 to 4   2 to 1   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   Jason has 40 apples. He gives Jon 12 apples and Jeff 14 apples. What percentage of apples does Jason now have of the original 40?   14   35   26   What is 51 percent of 492?   None of the choices   250.92   10.36   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 7   12 to 4   12 to 11