Danny collects bottle caps and wrappers. He found 17 bottle caps and 5 wrappers at the park. Now he has 31 bottle caps and 20 wrappers in his collection. How many more bottle caps than wrappers does danny have now?
Danny has 17 bottle caps and 5 wrappers. 
He finds 14 more bottle caps and 15 more wrappers. 
Now he has 31 bottle caps and 20 wrappers. 

We can see that Danny has 11 more bottle caps than wrappers.