NG Plc uses process costing. The costing inventory for period 1 was 8000 units which were 50% completed as per material and 50% complete as per conversion cost while the cost and for material and conversion was 20000 and 10000 respectively. In period 2 1600 units of material were added as input in with a total cost of 40000. The conversion cost for the period was 20000. 20000 units were completed in the period 2. The closing WIP was 100% complete as material and 50% complete as per conversion cost. There were no losses in the period. Using AVCO method calculate the cumulative cost per unit for period 2.