In a group of ducks and cows, the total number of legs are 26 more than twice the no. of heads. Find the total no.of buffaloes. Options.
A) 11  B) 12  C) 13  D) 16  E) 18

Rationale: "let the number of buffaloes be x and the number of ducks be y = > 4 x + 2 y = 2 ( x + y ) + 26 = > 2 x = 26 = > x = 13 c"
Answer: C