At Evan’s birthday party, there is an ice cream bar with 8 types of candy, 3 types of sprinkles, and 4 types of fruit. Which of these have a 2:1 ratio?
Marta is making punch for a party using 3 quarts of pineapple juice for every 5 quarts of orange juice. If she uses 15 quarts of orange juice, how many quarts of pineapple juice will she need to keep the ratio constant?