Mr. Taylor said that only 4 out of 21 dogs are chosen to pull sleds in the Iditarod. If that were true, how many dogs out of 77 would be chosen?

Answer : 44/3 or 14 2/3

Can't have 2/3 of a dog. Round to 15.

"Can't have 2/3 of a dog."

Don't listen to them. They are weak. They can't handle 2/3 of a dog.