Answer:
Jimmy learned to listen better and not be arrogant about others. He was rude and could care less about the old woman's dying wish. This in return made him lose a great sum of money. Jimmy also learned that good thing's come to those who listen or care. The theme of the story is the importance of family. Jimmy was only interested in profiting off the old woman's death and didn't care to listen to her and that resulted in some dramatic irony. He sold many things from the house to make money when he could've looked in the mattress and found all the money needed. That's the dramatic irony and it"s portrayed in paragraph/stanza 9 where it states "Meanwhile the neighborhood children began using the old mattress as a trampoline. Right around the time of Jimmy's arrest, some of the kids were jumping on it when it burst open. A cloud of green bills exploded upward.". So while Jimmy could've had this money he decided to throw it away because it was "in terrible condition, lumpy and worn.". This also proved the old saying that you shouldn't judge a book by it's cover.
Hope this helps