Question
In a courtyard there are many chickens and goats. If heads are counted, it comes to 100 but when legs are counted, it comes to 320. Find the number of chickens and goats in the courtyard.
Answer: Option C
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Average no. of legs per head = (320 / 100) = (16 / 5) or, 3 : 2 No. of goats = (3 / 3 + 2) × 100 = 60 No. of chickens = 100 ? 60 = 40.
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