问题250: Supreme Electronics Malaysia Sales \& Service Sdn Bhd produces four types of electrical products

Supreme Electronics Malaysia Sales \& Service Sdn Bhd produces four types of electrical products: air conditioners, stand fans, ceiling fans and air cooler fans. Each item requires a certain number of man-hours in three departments: assembly, testing and packaging. The following table shows the profit, man-hours required in each department. The last column shows the total number of hours available each week.