Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
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?

### Response:
The farm has 100(.20)=20 Black Copper Marans
There are 20(.80)=16 BCM hens
#### 16