WBCS.LIVE practice question

In a mixed group of cows and hens, the total number of legs is 14 more than twice the total number of heads. How many cows are there in the group?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 5
  2. 10
  3. 7
  4. 12

Correct answer and explanation

Correct answer: 7

Explanation: āœ… Correct Answer: C) 7 šŸ“š Explanation: Let the number of cows be 'C' and hens be 'H'. The total heads are (C + H) and total legs are (4C + 2H). According to the problem: 4C + 2H = 2 Ɨ (C + H) + 14. Simplifying the equation gives 4C + 2H = 2C + 2H + 14. The 2H cancels out on both sides, leaving 2C = 14. Dividing by 2 means there are exactly 7 cows.