Question 2. Henry, the operating manager, is attempting to put together an aggregate plan for the coming six months. He has obtained a forecast of expected demand for the planning horizon as below. The department now has 55 full-time workers, each of whom can produce 2 units of output per day. They work for eight hours per day and the labour cost is $5 per hour. The material cost is $150 per unit and the inventory cost is $1.5 per unit per period. The subcontract cost is $160 per unit and backlog cost is $349 per unit per period. The hiring and firing cost for each employee is $150 and $179 respectively. Determine the total cost of the plan. Total Period 0123 56 Demand | 3000 3500 3500 2000 2000 2900 Working days 23 19 21 21 20 22 Employees