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 say that Danny had x bottle caps and y wrappers in his collection before he went to the park. Then we know that:

x + 15 = 67 
y + 18 = 35

We can solve this system of equations to find out what x and y are:

x = 52
y = 17

So, Danny had 52 bottle caps and 17 wrappers in his collection before he went to the park. 

Now we need to find out how many more wrappers than bottle caps Danny has in his collection now. We can do this by subtracting the number of bottle caps from the number of wrappers:

67 - 35 = 32

Danny has 32 more wrappers than bottle caps in his collection now.