Problem 2 (30%) Helia Co is a company in retail. The company uses a perpetual record- method with a moving average inventory. If there is a return on sales, the goods will be returned to the warehouse and no inventory damaged. The assumption all transaction is cash sales. This is the information for Helia Co. Date Description December 31 January 3 January 6 January 7 January 9 January 10 January 12 January 23 January 25 Januari 27 Januari 30 Beginning Inventory Purchase Sales Sales Return Purchase Purchase Return Sales Purchase Sales Purchase Sales Quantity Unit Cost or Selling Price 100 $18.5 150 20 150 41 10 41 75 22 15 22 50 44 100 25 160 48 100 26 80 50 : Calculate (i) cost of goods sold, (ii) ending inventory, dan (iii) gross profit rate