converting cups

Question

A recipe that makes 36 cookies calls for 3/4 cup of brown sugar.  how much brown sugar is needed to make 4 dozen cookies using this recipe?

Answer 1

36 cookies is equal to 3 dozen.  Set up a proportion to solve.

 

3 dozen  =   3/4 cup

4 dozen          x

 

cross multiply  

 

3x = 3/4(4)

 

3x = 12/4

 

3x = 3

 

x = 1      It takes 1 cup of brown sugar to make 4 dozen cookies.