Danny collects bottle caps. He threw away 24 of the old ones at the park while he found 36 bottle caps new ones. Now he has 240 bottle caps in his collection. How many more bottle caps did danny find at the park than those he threw away?
Danny had 24 old bottle caps that he threw away. 
He found 36 new bottle caps. 
That means he found a total of 60 bottle caps at the park. 

60 - 24 = 36 

Danny found 36 more bottle caps at the park than those he threw away.