Question

Kelly is having a party. She wants to make punch. The recipe for punch uses 3 pints of pineapple juice, 5 cups or orange juice, 1/4 gallon of lemonade, and 1 quart of apricot nectar. Kelly says her recipe will make 20 cups of punch. Is Kelly correct? Explain your answer. How does one arrive at the answer? Are all the ingredients added? Is anything multiplied?

Answer 1

First convert all the ingredients into cups.
3 pints = 6 cups
5 cups = 5 cups
1/4 gallon = 4 cups
1 quart = 4 cups

Add all the ingredients.
6 + 5 + 4 + 4 = 19 cups

Therefore, Kelly does not make 20 cups of punch because her recipe is enough for only 19 cups of punch. All the ingredients are added and noting is multiplied.