The accounting records of Whispering Winds Corp. show the following data. Beginning inventory Purchases Sales 3,010 units at $6 8,130 units at $8 9.090 units at $11 Calculate average unit cost. (Round answer to 3 decimal places, es 5.125) Average unit cost $ per unit 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 decimal places, s. 125) FIFO LIFO Average cost Cost of goods sold