On the weekends, Brody teaches arts and crafts to kids. His Saturday class used a total of 45 pom-poms and 84 wooden craft stick
s for the project. Now, Brody is preparing the supplies for his Sunday class. He needs 15 pom-poms. If Brody uses the same ratio of pom-poms to wooden craft sticks, how many craft sticks will he need for Sunday's class?