The Southern Atlantic Railroad’s rail network covers most of the U.S. Middle Atlantic and Southeast region. On a daily basis it sends empty freight cars from various locations in its rail network to its customers at other rail hubs for their use to meet demand. The transportation costs for shipping empty freight cars, shown at the bottom of the page, are directly related to distance travelled and the number of rail centers that must handle the car movement. Determine the number of empty freight cars that should be sent from each rail network location to customers to meet demand at the minimum total cost on a given day when supply and demand are as shown.