Chris' average (arithmetic mean) daily expenses were $500 per day over a 15-day trip. During this period, if Chris' average daily expenses were $450 for the first 5 days, what were the average daily expenses for the last 10 days?
Chris' average (arithmetic mean) daily expenses were $500 per day over a 15-day trip. During this period, if Chris' average daily expenses were $450 for the first 5 days, what were the average daily expenses for the last 10 days?