AMU MCA Arithmetic Reasoning Previous Year Questions (PYQs)
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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?
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Solution
Let rabbits = r, pigeons = p
Heads:
r + p = 200
Legs:
4r + 2p = 580
Multiply first equation by 2:
2r + 2p = 400
Subtract:
2r = 180 → r = 90
So p = 200 − 90 = 110
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