An agency wants to ship food and clothing to hurricane victims in Louisiana. Commercial carriers have volunteered to transport the packages, provided they fit in the available cargo space. Each 20ft^3 box of food weighs 40 lb and each 30ft ^3 box of clothing weighs 10 lb. The total weight cannot exceed 16,000 lb, and the total volume must be at most 18,000 ft^3 . Each carton of food will feed 8 people, while each carton of clothing will help 8 people.
