M6.3 Global Foods, Inc. imports food products to the United States from Rotterdam, Barcelona, and Genoa. Ships from these ports deliver the products to Charleston, Miami, and Wilmington, where they are stored in company warehouses before being shipped to distribution centers in Houston, Denver, and Detroit. The shipping costs ($/1,000 lbs.) from the European ports to the U.S.cities and available supplies (1,000 lbs.) at the European ports are provided in the following table:

Shipping Costs ($/1,000 lbs.): U.S. Warehouses Supply Port Charleston Miami Wilmington (1,000 lbs.) Rotterdam $525 $488 $765 110 Barcelona $625 $740 $590 125 Genoa $550 $450 $600 65\f