Unique number is x = 20 , Y = 15

Use X = 20 Y = 15 Table 4 shows the forecast of production for Year 2020 for factory C. You need to use the given information in order to zaswer below questions. Value for x and y will be determine by your unique mumber. Please indicate your unique number before answering the question. Table 4: Production Planning Forecast for Year 2020 Month Feb. Mar. Apr. May June Demand (unit) 170 160 120 120 190 Jan. 130 per unit Regular Production 140 units per month Regular Overtime 10 units per production Overtime Sub-contract 10 units per month Sub-contract Inventory Backlog RM 50+ per unit RM 75+ y RM 80 per una RM 4 per unit per average RM 85 per una (a) Design TWO (2) alternative production planning that minimize the total cost of operation (Make sure that ending inventory in June is zero unit). [15 marks] (b) What need to be done if on-hand inventories become negative? [2 marks] () What is the purpose of having an aggregate planning in the organization? [2 marks] (4) When we should use sub-contract in the aggregate planning? [1 mark]