In a group of donkeys and pigs, the numbers of legs are 16 more than twice the number of heads. The number of donkeys is Choices
A) 6  B) 8  C) 11  D) 12  E) 13
Let the number of donkeys be x and the number of pigs be y. Then,   4x + 2y = 2(x + y) = 16 or 2x + (2x + 2y) = (2x + 2y) +16   or 2x = 16 or x = 8.   ANSWER:8
<result>B</result>
In a group of donkeys and pigs, the numbers of legs are 16 more than twice the number of heads. The number of donkeys is