A man has some hens and cows. If the number of heads be 46 and the number of feet equals 140, then the number of hens will be:
Choose the correct answer
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=46   implies, 2x+4y=140 and x+y=46   solving these two equations, we get x=22 and y=24   Therefore, hens are 22.   22NSWER:22
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A man has some hens and cows. If the number of heads be 46 and the number of feet equals 140, then the number of hens will be: