In a certain community, 36 percent of the families own a dog and 22 percent of the

Question:

In a certain community, 36 percent of the families own a dog and 22 percent of the families that own a dog also own a cat. In addition, 30 percent of the families own a cat. What is
(a) The probability that a randomly selected family owns both a dog and a cat?
(b) The conditional probability that a randomly selected family owns a dog given that it owns a cat?