A manufacture has the following information on its major product.
Regular time production capacity = 2600 units/period
Overtime production costs = Rs. 12/unit
Inventory costs = Rs. 2 unit/period
Backlog costs = Rs. 5/unit/period
Beginning inventory = 400 units
Demand (in units) for period 1,2,3,4 is 4000 , 3200, 2000 and 2500 respectively. Develop a level output plan that filed zero inventory at the end of period 4, What costs result from this plant ?