Periodic inventory by three methods, cost of goods sold The units of an them ayailable for sale during the year wern as follows: There are 60 units of the item in the plysical inventory at December 31 , The periodic invontory system is used. Determine the ending inventory cost and the cost of goods sold ty three methodk, Round interim colculations to one deomal and firal antwers to the nearrat whole dollar. Periodic inventory by Thene Methods The anits of an item available for sale during the vear were as follows: There are 8 units of the item in the phycical inventery at December 31 . The penodic niveritory system is used. Roynd avernoe unit cost to the nearest cent and finat invers to the nearest whole dollar, if required. a. Determine the inventory cost by the first-in, first out method. b. Determine the imventary cost by the last-in, first-out method; 1. c. Determine the inventory cost by the weighted average cost method