Danny collects bottle caps and wrappers. He found 15 bottle caps and 18 wrappers at the park. Now he has 67 wrappers and 35 bottle caps in his collection. How many more wrappers than bottle caps does danny have now?
Let's denote the number of wrappers Danny had at the park by w1 and the number of bottle caps by c1. Then we know that 

w1+c1=33

and 

w1=18, c1=15. 

Now Danny has w2 wrappers and c2 bottle caps in his collection. We know that 

w2+c2=102

and 

w2=67, c2=35. 

Now we need to calculate the difference between the number of wrappers and the number of bottle caps Danny has now. This difference is 

w2-c2=67-35=32. 

Therefore the answer (numeric) is: 

32