A recipe calls for of a cup of milk for 12 cookies. How many cups of milk are needed to make 108 cookies?

Question

Please answer

Answer 1

Hi Joe,

 

Let's think about this logically.

 

1 cup of milk makes 12 cookies.

 

If you wanted to make twice as many cookies (24), then you would need 2 cups.

 

If you wanted to make three times as many cookies (36), then you would need 3 cups.

 

So how many 12's go into 108?

 

That's the number of cups of milk that you need.

 

Another way to think about it, is to set up ratios:

 

1 cup / 12 cookies = X cups / 108 cookies

 

Then cross multiply (top of one fraction times the bottom of the other fraction) :  1 X 108 = 12X and solve for X by dividing both sides by 12.

 

Have fun.

 

Dan