Buffalo Industries had a beginning inventory of 91 units of Product RST at a cost of $8 per unit. During the year, purchases were: 608 394 Feb. 20 May 5 units at units at $9 $10 Aug. 12 Dec. 8 units at units at $11 $12 460 97 Buffalo Industries uses a periodic inventory system. Sales totaled 1,490 units. Your answer is incorrect. (a) Determine the cost of goods available for sale. The cost of goods available for sale $ (b) Calculate Average Cost. (Round answer to 3 decimal places, e.g. 5.125.) Average Cost $ e Textbook and Media List of Accounts Assistance Used x Your answer is incorrect. Determine the ending inventory and the cost of goods sold under each of the assumed cost flow methods (FIFO, LIFO, and average-cost). (Round answers to 0 decimal places, e.g. 150.) FIFO LIFO AVERAGE-COST $ $ $ The ending inventory The cost of goods sold $ $ $