Chemco produces two chemicals A and B. These chemicals are produced via two manufacturing processes. Process 1 requires 2 hours of labor and 1 lb of raw materials to produce 2 oz of A and 1 oz of B. Process 2 requires 3 hours of labor and 2 lbs of raw material to produce 3 oz of A and 2 oz of B. Sixty hours of labor and 40 lbs of raw material are available. Demand for Chemical A is unlimited, but only 20 oz of B can be sold. Chemical A sells for $16/oz, and B sells for $14/oz. Any chemical B that is unsold must be disposed of at a cost of $2/oz. Formulate an LP model to maximize Chemicos revenue and solve.