Do It! Review 6-2 The accounting records of Waterway Industries show the following data Beginning inventory Purchases Sales 2,920 units at $5 7,740 units at $7 9,274 units at $10 Calculate average unit cost. (Round answer to 3 decimal places, e.g. 5.125.) Average unit cost per unit SHOW LIST OF ACCOUNTS Determine cost of goods sold during the period under a periodic inventory system using the FIFO method, the LIFO method, and the average-cost method. (Round answers to 0 decimal places, e.g. 125.) FIFO LIFO Average-cost Cost of goods sold