A pie is made up of 1/9 crust, 1/3 apples, 1/4 sugar, and the rest is jelly. What is the ratio of crust to jelly?
To compute this ratio, you must first ascertain how much of the pie is jelly. This is:
Begin by using the common denominator 36:
So, the ratio of crust to jelly is:
This can be written as the fraction:
, or