In a zoo, there are Rabbits and Pigeons. If heads are counted, there are 200 and if legs are counted, there are 580. How many pigeons are there?

Answer: Option C

Heads Count = 200
Legs count = 580
Average Legs count for per head = $$\frac{580}{200}$$ = $$\frac{29}{10}$$

Rabbits : Pigeons = $$\frac{9}{10}$$ : $$\frac{11}{10}$$ = 9 : 11
Number of Pigeons = $$200\times \frac{11}{20}$$  = 110