Answer the following question, with explanation first.
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?

16
Black Copper Marans: 100(.

20) = 20.

BCM Hens:20(.

80) = 16.

.

The answer is 16