You are baking a casserole. The recipe calls for 3/4 of a cup of beans to make 7 servings. How many cups of beans would you need to make 21 servings?

Answer 1

21 is 3 times as many servings as 7

so use 3 times as many cups of beans

3 x 3/4 = 9/4 = 2 1/4 cups of beans for 21 servings