A Motel Advertises That It Will Provide Dinner, a Dance

Short Answer

A motel advertises that it will provide dinner, a dance, and drinks at $40 per couple for a New Year's Eve party. It must have a guarantee of 60 couples. Furthermore, it will agree that for each couple in excess of 60, it will reduce the price per couple for all attending by $0.10. How many couples will it take to maximize the motel's revenue? __________ couples