# There are only deers and ducks in a zoo.when the heads are counted, it is 204 n legs are 512.how many dears are in zoo.

A. 152

B. 176

C. 26

D. 52

**Answer: Option D**

4×Dear +2×Duck= 512,

Dear+Duck=204,

Now, Duck= 204-Dear,

Now, 4×Dear+ 2×(204-Dear)=512,

4×dear+408-2×Dear=512,

Now 2×Dear=512-408= 104

So that Dear= 104/2= 52

So total dear= 52,

Option D = 52 is right