<human>:  A farm has 100 chickens. 20 percent are Black Copper Marans, and 80 percent of the Black Copper Marans are hens. How many BCM hens are there?
<bot>: How many Black Copper Marans are there? ** Black Copper Marans: 100(.20)=20
How many BCM hens are there? ** BCM Hens:20(.80)=16
#### 16