Question 13
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In a group of cows and hens, the number of legs are 14 more than twice the number of heads. The number of cows is
- A 5
- B 7 Correct
- C 10
- D 12
Correct Answer: Option B
Let the number of cows be x and the number of hens be y.
Then, 4x + 2y = 2 (x + y) + 14 <=> 4x + 2y = 2x + 2y + 14 <=> 2x = 14 <=> x = 7.
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