Your publishing company is about to start a promotional blitz for its new book, Advanced Quantum Mechanics for the Liberal Arts. You have 20 salespeople stationed in Chicago and 10 in Denver. You would like to fly at most 10 salespeople into Los Angeles and at most 15 into New York. A round-trip plane flight from Chicago to Los Angeles costs $195; one from Chicago to New York costs $182; one from Denver to Los Angeles costs $415; and one from Denver to New York costs $166. You want to spend at most $4,520 on plane flights. How many salespeople should you fly from each of Chicago and Denver to each of Los Angeles and New York to have the most salespeople on the road