Brian mix 8 cups of milk to make 6 dozen brownies at that rate how many cups of milk would he need to make 15 dozen brownies

20 cups

Step-by-step explanation:

15 / 6 = 5/2

8 * 5/2 = 20

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6