Here is an operations planning case analysis. You are expected to do the following questions and submit them for marking at the end of the semester via utsonline and in hard copy to your tutor in week 10. A company has the following demand forecast next year, expressed in six bimonthly periods: Forecast Demand: Period 1 = 4,500 units Period 4 = 6,500 units Period 2 = 3,000 units Period 5 = 5,100 units Period 3 = 4,800 units Period 6 = 5,500 units The company begins the planning year with 500 units of inventory as safety stock and finish the year with the same inventory amount. The following cost data have been obtained: Each employee works 160 regular working hours per month Each unit requires 2 standard hours to produce The labour costs are $20 per normal hour and $27 per overtime hour It costs $4 per month to hold an item in the warehouse Question 2 The company is considering using overtime subject to a maximum of 20 percent of regular-time hours. a) What is the average cost per unit if the work force is maintained at a level so that overtime can be used to the maximum of 20% of regular hours during the peak period in period 4? b) What is the total cost in this option (including labour and inventory cost)? Note: Round up the decimal number of employees, e.g. 36.4 is round up to 37