The question is how we can get " K " ?

Ne ne produces fruit juice in various sizes. A planner has developed an forecast for demanding a units) for the next six month th D M 21 21 18.000 31.700 10 27.300 September 21 October 23 22350 Input Data: Production rate: Regular time available: Overtime hours Beginning workforce Beginning inventory Ending inventory 12 cases per hour per employee 8 hours per day per employee 2 hours per day per employee 8 employees $25 cases O cases Regular time labor cost per hour Overtime labor cost per hour Back order (shortage) cost per case per month Inventory holding cost per case per month Hiring cost per employee Firing cost per employee 10 OMR 13.5 OMR 3.25 OMR 0.400 OMR 600 OMR 1100 OMR a a) Develop an aggregate production plan with a level strategy (constant workforce). You can add or remove employees only at the beginning of the plan (start of May), but the number of workers employed cannot be changed thereafter. Shortages are not allowed at any time