Suppose a tour guide approached the general manager of the Grand Canyon Railway with a proposal 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. Under either option, Grand Canyon would hire a tour guide for $150 for the trip. Grand Canyon has extra cars in its switching yard, and it would cost $40 to move a car to the main track and hook it up. The extra fuel cost to pull one extra car is $.20 per mile. To run an engine and a passenger car on the trip would cost $2.20 per mile, & the engineer would be paid $400. Depreciation on passenger cars is $5000p/yr. & engines is $20000p/yr. Each passenger & engine car travels 50000miles p/yr. Replaced every 8 years. The agent offereed to pay $30 per passenger for the special tour and $15 per passenger for simply adding an extra car.

1) Which of the two options is more profitable to Grand Canyon? Comment on which costs are irrelevant to this decision.
2) Should Grand Canyon accept the proposal for the option you found best in number 1? Comment on what costs are relevant for this decision but not for the decision in number 1.