Adivision number story with an answer of 12/8?

There were 12 cookies and eight cows. Each cow wanted an equal share  

of the cookies. How many cookies did each cow get?  

Each cow got 1.5 of the cookies, because 12 divided by 8 is 1.5

There are 12 people at a party and the birthday cake has only 8 pieces.

How much cake corresponds to each guest assuming everyone eats the same portion of cake

Each guest eat one and half piece of cake

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80