Can you please explain how to do this

company can keep freight costs low, profitability will improve. the amount sold at each location are as follows: from Louisville and Cincinnati to the destinations. A rail car holds 3,200 bushels of grain. Cost per bushel in cents Numbor nf ramoto Chin Which (if any) rail cars of grain must be held at the origin until buyers can be found? Enter the number of cars at each starting location that must be held. Number of Cars Remainina