Two brothers, Bill and Eric, are 4 years apart, and Bill is the older of the two. If the sum of the boys' ages are 28, how old is Bill and how old is Eric?
Divide 28 by 2 which you would get 14. Now subtract two from 14 you will get 12, and add two from 14 you will get 16. Since 12 and 16 are 4 numbers apart, 12+16=28.
