A railroad is contemplating the construction of a new line to the site of a large grain elevator that will ship 800,000 tons of grain per year. The elevator will supply the freight cars at no cost to the railroad. The light or tare weight of each car is 32 tons. Each car could hold 120 tons, given the density of the grain. However, the track weight limit is 286,000 pounds. Each train will consist of 108 cars. (1) (5') How many trains per year will the new line generate? (2) (5') If the terminal elevator is located at the end of the proposed line, which will be 20 miles in length. How many train miles will be needed to move the 800,000 tons of grain per year? (3) (5') If the average labor cost per mile for the trains is $11.90. Other costs such as dispatching and train administration equal 30 cents per train mile. Thus, the annual cost of operating trains on the proposed line is $ per year. (4) (5') If the average cost per locomotive-mile is $5.10 and two locomotives are needed to haul the trains, what will be the combined annual locomotive and train operating costs to serve the new line