Mary is baking a cake. The recipe calls for 24 cups of sugar and 40 cups of flour. She already put in 2 cups of flour. How many more cups of flour than cups of sugar does she need to add now?
1. Mary is baking a cake. The recipe calls for 24 cups of sugar and 40 cups of flour.
2. She already put in 2 cups of flour. 
3. How many more cups of flour than cups of sugar does she need to add now?

In order to solve this problem, we need to find out how many cups of flour she needs to add in total. We know that the recipe calls for 40 cups of flour, and she has already added 2 cups of flour. So she needs to add 40 - 2 = 38 cups of flour. 

We also need to find out how many cups of sugar she needs to add in total. We know that the recipe calls for 24 cups of sugar. So she needs to add 24 cups of sugar. 

Now we need to compare the two numbers. We need to find out how many more cups of flour than cups of sugar she needs to add. So we take the difference: 

38 - 24 = 14

Mary needs to add 14 more cups of flour than cups of sugar.