Periodic inventory by Three Methods Dymac Appliances uses the periodic inventory system. Detalis regarding the inventory of appliances at 18nuacy1, purchases invoices during the next 12 months, and the inventory. count at December 31 are summarized as folliows: Required: 1. Determine the covt of the inventory on December 31 by the Arstein, first out methos. If the imventory of a partecular model camprises one enture purchase plus a portion of another purchase actuired at a different unit cost, use a seporate line for each purchase it Units are in inventory at two different costs, enter the units PUACHASED MOST RECENTLY first