Problem 1. (20 pts) Rent'R Cars is a multisite Car rental company in the city. It is trying out a new "return the car to the location most convenient for you" policy to improve customer service. But this means that the company has to constantly move cars around the city to maintain required levels of vehicle availability. The supply and demand for economy cars, and the total cost of moving these vehicles between sites, are shown below. Formulate this problem as a linear programming problem, and find the solution that minimizes moving costs using Excel. Problem 2. (20 pts) MacDonald opens an 800 acre farm to raise wheat, beef, and alfalfa. He is planning his activities for the next year. Profit contribution from raising and selling wheat is $120 /acre; profit contribution from raising and selling beef is $450/ ton; alfalfa costs $7/ ton to raise and sells for $22/ ton. It takes 5 tons of alfalfa to raise 1 ton of beef. Alfalfa can also be bought in the market for $28/ ton. The land and water requirements for wheat, beef and alfalfa, and the total availability of land and water are shown in the table below. What decisions should MacDonald take to maximize his total profit? Solve this problem using the Excel solver