determaine the cost if the inventory on december 31 by the last in first out method. if the inventory if a particular model comprises one entrire purchase plus a portion of another purchase acquired at a different unit cost use a seperate line for each purchase if units are in inventory at two different cost enter the oldest units first

Periodic inventary by three methods Dymac Appliances uses the periodic inventory system. Details regarding the inventory of appllances at January 1 , purchases invoices during the next 12 months, and the inventory count at December 31 are summarized as follows