Question

A cake recipe requires 3 and 1/4 cups of flour for 13 servings and 4 and 1/2 cups of flour for 18 servings. How much flour is required to make a cake that serves 28?

Answer 1

b

Explanation:

Answer 2

So, each serving requires:

3 1/4 divided into 13:

`3(1)/(4) /13= (13)/(4) * (1)/(13) = (1)/(4)`

let's check from the second information:
4 2/4 divided into 18:

`4(2)/(4) /18= (18)/(4) * (1)/(18) = (1)/(4)`


so for 28, we need:


`(1)/(4) *28= (28)/(4) = (14)/(2) = 7`

we need 7 cups of flour!