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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?

A90

B100

C110

D120

Answer:

C. 110

Read Explanation:

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


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