Bieber Inc. is a retailer operating in Calgary, Alberta. Bieber Inc. uses the perpetual inventory method. Assume that there are no credit transactions; all amounts are settled in cash. You are provided with the following information for Bieber Inc. for the month of January 2017. Quantity Unit Cost or Selling Price 160 100 180 Date Description Dec. 31 Ending inventory Jan.2 Purchase Jan. 6 Sale Jan. 9 Purchase Jan. 10 Sale Jan. 23 Purchase Jan. 30 Sale 100 130 Your answer is incorrect. Calculate average cost for each unit. (Round answers to 3 decimal places, e.g. 5.125.) Jan. 1 $ 8.00 Jan. 2 $ 4.54 Jan. 6 $ 4.5 Jan. 9 $ 3.125 Jan. 10 $ 1.11 Jan. 23 $ 4.00 Jan. 30 $ 2.70