A man has some hens and cows. If the number of heads be 48 and the number of feet equals 144, then the number of hens will be:
Pick one:	A) 22	B) 23	C) 24	D) 26	E) 28
let hens be x and cows be y   now,   feet: x*2+y*4=144   heads: x*1+y*1=48   implies, 2x+4y=144 and x+y=48   solving these two equations, we get x=24 and y=24   Therefore, hens are 26.   ANSWER:24
<result>C</result>
A man has some hens and cows. If the number of heads be 48 and the number of feet equals 144, then the number of hens will be: