Show Me How Periodic investory by three methods; cost of goods sold The units of an item available for sale during the year were as follows Jan. 1 Inventory 50 units at $106 Mar 10 Purchase 60 Aug. 30 Purchase Dec. 12 Purchase 20 units at $122 70 $124 There are 50 units of the item in the physical inventory at December 31. The periodic inventory system is und Determine the ending inventory cost and the cost of goods sold by three methods. In your calculations round average unit sest to the rest t round all other calcul Cost of Ending Inventory and Cost of Goods Sold Inventory Hethod Ending Inventory Cost of Goods Sold Fest in, fest ut (FO)