Dana has 8 baseball cards, 10 football cards, 4 hockey cards, and 14 basketball cards. all the cards are the same size and shape. dana will select one card at random. what is the probability that the card selected will be a hockey card?

The probability of Dana selecting a hockey card will be a 4/36 or 1/9.
Work:
         1.I added all of the cards together.
         2.I saw that the number of hockey cards was 4 and divided it by 36 (the total number of cards)
         3.Simplified