Heads and legs puzzle (systems with animals): Determine the count of peacocks. In a zoo there are deer and peacocks. Total heads = 80 (deer + peacocks). Total legs = 200 (deer have 4 legs; peacocks have 2 legs). Find the number of peacocks. Choose the correct value.
Verbal Reasoning
Arithmetic Reasoning
Difficulty: Easy
Choose an option
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A20
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B30
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C50
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D60
Answer
Correct Answer: 60
Explanation
Let d = deer, p = peacocks.
Equations d + p = 80. 4d + 2p = 200 ⇒ divide by 2: 2d + p = 100.
Solve (2d + p) − (d + p) = 100 − 80 ⇒ d = 20. Then p = 80 − 20 = 60.