A recipe calls for a total of 3 2/3 cups flour and sugar. If the recipe calls for 1/4 cup of sugar, how much flour is needed?

To find out how much flour is needed, you take 3 2/3 cups (of flour and sugar) - 1/4 cup (sugar) = (flour).  3 2/3    =     3 8/12 -   1/4    =        3/12 __________________ ...... That equals 3 5/12 cups of flour.