Suppose the monthly demand is known and is as follows for the first 6 months. Time studies show that the number of aggregate units produced by one worker in one day is k = 0.2, How many workers are needed to fulfill the demand if a Zero inventory plan is chosen, assuming every month has 20 working days and 8 hours per day? Month Demand No. of workers Total cost 1 250 2 200 3 450 4 400 5 350