human
Farmer Brown raises emus, large birds. His flock has a total of 60 heads and legs. How many emus are in his flock?
assistant
How many heads and legs does each emu have? ** Each emu has 1+2=<<1+2=3>>3 heads and legs.
How many emus are in his flock? ** Then the flock has 60/3=<<60/3=20>>20 animals.
#### 20