Which model can be used to solve this unit fractions division problem?Corol needs 1/3 of a cup of milk for a cake recipe. If she has 5 cups of milk left ,how many cakes can she make?

15 cakes

Step-by-step explanation:

For 1 cake, Carol uses 1/3 cup of milk.

When she has 5 cups of milk left, the number of cake is not known yet.

Let the number of Unknown cakes be y.

1/3 = 1 equation i

5 = y equation ii

Divide equation I by ii

1/3 / 5 = 1/y

1/15 = 1/y

Cross multiply

Y = 15

She can make 15 cakes from 5 cups of milk

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2