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 answer:  A) 22  B) 23  C) 24  D) 26  E) 25
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 = 26.   ANSWER IS 26
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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: