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 cows will be:	Choose the correct choice from the following answers.
A) 30	B) 23	C) 24	D) 26	E) 22
Explanation:   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 = 22.   Answer: 22
<result>E</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 cows will be: