(Appendo 6B) Inventory Costing Methods: Periodic Average Cost Filimpnov Inc, has the following information related to purchases and sales of one of its inventory items: Assume that Filimonoy uses a periodic lnventory system. Required: Calculate the cost of goods sold and the cost of eniding inventory using the average cost method. (Note: Use four decimal places for per-unit calculations and round all other numbers to the nearest dollar.) Cost of ooods sold Cost of ending ifiventory