Ge produces 5 different sizes of tvs using 2 machines. different sizes of tvs take different amount of time to get processed at each of the two machines, and bring in different amount of profit for the company per unit. ge has a limited amount of time to process tvs during each month but would like to find out how many of each size of tv to produce each month to maximize its total profit. how many decision variables are needed to properly formulate this problem?