Problema Solution
A cake recipe requires 3 1/4 cups of flour for 13 servings and 4 1/2 cups of flour for 18 servings.How much flour is required to make a cake that serves 28?
Answer provided by our tutors
lets 'x' be the number of cups of flour we need to make a cake that serves 28
3 1/4 = 13/4 cups for 13 servings
4 1/2 = 9/2 cups for 18 servings
x cups for 28 serving
the following proportions count
(13/4) : 13 = (9/2) : 18 = x : 28
1/4 = 1/4 = x/28
x = 28*(1/4)
x = 28/4
x = 7 cups of flour
we need 7 cups of floor to make cake for 28 servings.