A company using the varying workforce strategy to meet exact demand is preparing an aggregate production plan for the next four (4) months. The number of the workforce currently employed is 20 workers. The monthly output per worker is 200 units. Hiring cost is RM100 per worker and firing cost is RM200 per worker. The estimated demand is as follows. What are the total hiring and firing costs for the plan? Month Forecasted Demand Jun Jul 3,200 3,600 Aug 4,000 Sep 3,800