A company produces three types of calculators: Calculator A, B and C. Each calculator requires three steps in the production process. As it goes through production, each calculator consumes material and labor. How many units of each type of calculator does the company need to produce to maximize its profit given the following constraints: The company has to meet market demand (and cannot produce more than demand). Labor hours available at each step are 2000, 3000, and 2100 respectively. Material costs, labor costs, market demand and other details are given below. Labor hours required (per unit) Calculator A Calculator B Calculator C Step 1 1 1 3 Step 2 2 2 3 Step 3 2 3 1