Q1: A company process two types of products, a first-class product, and a second-class product, and the process goes through three stages, which are inspection preparation, and packaging. The inspection process for the first product takes 4 hours, and for the second category, it takes 2 hours. The preparation process for the first-class product takes 2 hours and the second class takes 6 hours. Finally, the packaging process for the first-class product requires 4 hours and the second class 6 hours. Given the time required for other duties, the inspection department has 28 hours per week preparation has 30 hours available, and packaging has 36 hours available You want to process as many products as possible every week Set up this problem as a linear programming problem. Use graphic analysis to find a solution