Cora was planning a party with her friends. Since they did not have much money, they decided to get only one type of snack food. When she polled her friends, she found that four more than one third of her friends preferred popcorn. If Cora is inviting 15 friends over for the party, how many prefer popcorn as a snack?

Question

pfenn1 · Answer

How many is one third of her friends if the total of her friends is 15?  Then how would you figure out what is four more than one third of her friends.  Let x = number of friends who prefer popcorn.