A man has some hens and cows. If the number of heads be 44 and the number of feet equals 128, then the number of hens will be  Choose the most appropriate option.
A) 22
B) 24
C) 26
D) 20
E) 28

Rationale: "explanation : let number of hens = h and number of cows = c number of heads = 44 = > h + c = 44 - - - ( equation 1 ) number of feet = 128 = > 2 h + 4 c = 128 = > h + 2 c = 64 - - - ( equation 2 ) ( equation 2 ) - ( equation 1 ) gives 2 c - c = 64 - 44 = > c = 20 substituting the value of c in equation 1 , we get h + 22 = 44 = > h = 44 - 20 = 24 i . e . , number of hens = 24 answer : b"
Answer: B