A recipe for muffins calls for 1/2 quart of buttermilk, 1/3 quart of skim milk, and 1/16 quart of oil. How many total quarts of liquid ingredients does the recipe call for?

43/48

You have to change all of the fractions into fractions with the same denominator. The closest is 48. 1/16 will turn into 3/48, 1/3 will turn into 16/48, and 1/2 will turn into 24/48. When you add it all up, you get 43/48 as your answer