Calculate (1) cost of goods sold and (ii) ending inventory using Average. (Round average cost to 3 decimal places, eg. 5.252 and round final answers to 2 decimal places, es 5.25.) 0 Cost of goods sold $ 1) Ending inventory $ e Textbook and Media Sheffield Inc. is a retailer using the periodic inventory system. All sales returns from customers result in the goods being returned to inventory. (Assume that the inventory is not damaged) Assume that there are no credit transactions; all amounts are settled in cash. You are provided with the following information for Sheffield Inc. for the month of January Date Dec. 31 Jan 2 Jan. 6 Jan. 9 Jan. 9 Jan. 10 Jan. 10 Jan. 23 Jan. 30 Description Beginning inventory Purchase Sale Sale return Purchase Purchase return Sale Purchase Sale Quantity 160 100 180 10 75 15 50 100 120 Unit Cost or Selling Price 20 23 38 38 25 25 47 26 49 (a)