Question

In dogs, colored fur, E, is dominant over colorless fur, e. Black fur color, B, is dominant over brown fur color, b. The E gene is epistatic to the B gene. Suppose a yellow male dog is mated with a black female. The male’s parents were both brown. The female’s mother was yellow, and her father was brown.
What percentage of the puppies will be yellow?
What percentage of the puppies will be black?
What percentage of the puppies will be brown?