5-55 Pricing at the Grand Canyon Railway Suppose a tour agent approached the general manager of the Grand Canyon Railway with a pro- posal to offer a special guided tour to the agent's clients. The tour would occur 20 times each summer and be part of a larger itinerary that the agent is putting together. The agent presented two options: (a) a special 65-mile tour with the agent's 30 clients as the only passengers on the train, or (b) adding a car to an existing train to accommodate the 30 clients on an already scheduled 65-mile tour