Schurman Orchards has apple trees and cherry trees. The apples and cherries that are
grown at Schurman Orchards are used to produce both apple cider and cherry cider. Weekly
sales commitments by the owners of Schurman Orchards require at least 50 gallons of apple
cider and at least 20 gallons of cherry cider. Schurman Orchards has the weekly capacity to
produce at least 100 gallons of apple cider or at least 50 gallons of cherry cider or any linear
combination of apple cider and cherry cider. Each gallon of apple cider cost Schurman
Orchards $4; each gallon of cherry cider cost $6.