Question

In a farm there are hens and cow. If the heads are counted there are 200 and if the legs are counted there are 580. How many hens are there?

• A. 90
• B. 100
• C. 110
• D. 120

Answer 1

Answer:

C. 110

Hens are represented by H and cow by C H + C = 200 ..... (1) 2H + 4C = 580 ..... (2) (1) × 4 4H + 4C = 800 ... (3) (3) - (2) = 2H = 220 H = 220/2 = 110