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_________?
Correct answer: D. 26
- A. 22
- B. 23
- C. 24
- D. 26
Explanation
Let hens be h and cows be c. Then h + c = 48 and 2h + 4c = 140, so h + 2c = 70; subtracting the first equation gives c = 22 and h = 26, making option d correct. Option c is the likely mistake from treating every animal as having two feet.
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