You own a business that services trucks. A customer would like to rent a truck from you for one week, while you service his truck. You must decide whether or not to do this.
You have an extra truck that you will not use for any other purpose during this week. This truck is leased for a full year from another company for $300/week plus $.50 for every mile driven. You also have paid an annual insurance premium, which costs $50/week to insure the truck. The truck has a full 100-gallon fuel tank.
The customer has offered you $600 to rent the truck for a week. This price includes the 100 gallons of fuel that is in  the tank. It also includes up to 500 miles of driving. The customer will pay $.50 for each additional mile that he  drives above the 500 miles. You anticipate that the customer will bring back the truck with an empty fuel tank and will have driven more than 500 miles. You sell fuel to truckers at a retail price of $4.00/gallon. Any fuel you sell or use can be replaced at a wholesale price of $3.25/gallon.
The customer will rent a truck from another company if you do not accept the proposed deal. In either case, you will service his truck. You know the customer and are confident that he will pay all charges incurred under the agreement.
1. Should you accept or reject the proposed deal?
2. Would your answer change if your fuel supplier limited the amount of fuel that you could purchase from him at the wholesale price? Explain.