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   What is 51 percent of 492?   10.36   250.92   None of the choices   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?   35   14   26   What is 15 percent of 200?   30   15   25   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?   9 to 6   18 to 12   None of the choices