In a Zoo, there are rabbits and pigeons. If heads are counted there are 200 in all and if legs are counted there are 580 in all. How many pigeons are there in the Zoo?
Answer: 110
Explanation
Total heads = 200
Total legs = 580
Calculation:
Let, number of pigeons be x and number of rabbits be y
According to the question,
x + y = 200 ...i)
2x + 4y = 580
⇒ x + 2y = 290 ...ii)
From (i) and (ii) we get,
y = 90
⇒ x = 200 – 90 = 110
∴ There are 110 pigeons in the zoo
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