Apunch recipe says to mix 4 cups pineapple juice 8 cups of orange juice and 12 cups seltzer in order to make 18 servings of punch
a. how many cups of each ingredient do you need to make 108 cups of punch.
b. how's many servings can be made from 108 cups of punch?
c. for every cup of seltzer you use how much orange juice do you use?