A man has some hens and cows. If the number of heads be 48 and the number of feet equals 140, then the number of hens will be:	Choose the correct choice from the following.
A) 22  B) 23  C) 24  D) 26  E) 28
let hens be x and cows be y   now,   feet: x*2+y*4=140   heads: x*1+y*1=48   implies, 2x+4y=140 and x+y=48   solving these two equations, we get x=26 and y=22   Therefore, hens are 26.   ANSWER:26
<result>D</result>
A man has some hens and cows. If the number of heads be 48 and the number of feet equals 140, then the number of hens will be: