Question

In a group of cows and hens the number of legs are 14 more than twice the number of heads the number of cows is

Answer 1

28.....................................

Answer 2

let x be cow and y be hen 

so, 4x + 2y = 2(x+y) +14 

  4x + 2y = 2x +2y +14

  2x =14

  x =7

so there are 7 cows