Ulko produces tomato paste at five different plants. The tomato paste is then shipped to one of three warehouses, where it is stored until it is shipped to one of the company’s four customers. The shell gives the plant capacities, the cost per ton of producing tomato paste at each plant and shipping it to each warehouse, the cost of shipping a ton of paste from each warehouse to each customer, customer demand, and the annual fixed cost of operating each plant and warehouse. Ulko’s management must decide which plants and warehouses to open, how to route paste from plants to warehouses and from warehouses to customers. All customer demand must be met. A given customer’s demand can be met from more than one warehouse, and a given plant can ship to more than one warehouse. Warehouses are trans-shipment points, anything shipped into a warehouse must be shipped out. Formulate a linear model and find the minimum cost solution for meeting customer demand.