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 one.
A) 43	B) 26	C) 33	D) 21	E) 28
B   26   Let the number of hens be x and the number of cows be y.   Then, x + y = 48 .... (i)   and 2x + 4y = 140 x + 2y = 70 .... (ii)   Solving (i) and (ii) we get: x = 26, y = 22.   The required answer = 26.
<result>B</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: