Chapter 4: Rational Numbers: Positive and Negative Fractions Numbers in the Real World

Chocolate Cheesecake

The Web is an excellent source for great recipes.  My wife loves cheesecake, and there are a number of cheesecake recipe collections online.  The Little Blue House Bed & Breakfast in Lewiston, New York, has a recipe for Double Whammy Chocolate Cheesecake.  Its ingredients are listed below.  For cooking directions, go to their page.

     3/4 cup graham cracker crumbs
     1/4 cup butter, melted
     1/3 cup sugar
     1/4 cup cocoa
     1/2 cup nuts, finely chopped (pecans/walnuts)
     24 oz. cream cheese, room temperature
     10 oz. white chocolate, melted
     1 tin sweetened condensed milk
     4 eggs
     1 cup jumbo or regular milk chocolate chips

List the new quantities of each ingredient if you make a double batch.
 

List the quantities of each ingredient if you make 1/2 a batch.
 

If you had 1 1/2 cups of cocoa on hand (and plenty of everything else), how many batches could you make? 

Assuming that this recipe makes nine servings, how many batches would be necessary to serve 12? 
List the quantities of each ingredient for a 12-serving recipe.