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 Choose the most appropriate option.
A) 6	B) 8	C) 11	D) 12	E) 13

Rationale: let the number of donkeys be x and the number of pigs be y . then , 4 x + 2 y = 2 ( x + y ) = 16 or 2 x + ( 2 x + 2 y ) = ( 2 x + 2 y ) + 16 or 2 x = 16 or x = 8 . answer : b
Answer: B