In a group of ducks and Cows, the total number of legs are 16 more than twice the no. of heads. Find the total no.of buffaloes.	Choose the most appropriate option.
A) 10  B) 12  C) 8  D) 12  E) 14

Rationale: let the number of buffaloes be x and the number of ducks be y = > 4 x + 2 y = 2 ( x + y ) + 16 = > 2 x = 16 = > x = 8 c
Answer: C