A man has some hens and cows. If the number of heads be 48 and number of feet equal 140 the number of hens will be?

22
23
24
26

Correct Answer: 26

Explanation:

Let the numbers of hens = x and number of cows = y
Then x + y = 48 and 2x + 4y = 140
Solving these equations, we get 2y = 44
∴ y = 22
So, x = (48 - 22) = 26
∴ Number of hens = 26.

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