Every single participant is at a specific stage in the sport. What's the overall amount of money that's been put in on purchases by all players of the supplied degree? Your question should return final results of the form: (stage, totalAmountSpentByAllPlayersAtLevel) during the descending order of the amount put in. http://cashafcnk.blogprodesign.com/33518193/the-greatest-guide-to-case-study