Danny collects bottle caps and wrappers. He found 40 bottle caps and 39 wrappers at the park. Now he has 28 bottle caps and 19 wrappers in his collection. How many more bottle caps than wrappers does danny have now?
Danny found 40 bottle caps and 39 wrappers at the park. 
He now has 28 bottle caps and 19 wrappers in his collection. 

We want to know how many more bottle caps than wrappers Danny has now. 

We can find this out by subtracting the number of wrappers from the number of bottle caps: 

28 bottle caps - 19 wrappers = 9 more bottle caps than wrappers