Required information [The following information applies to the questions displayed below.] Sandra's Purse Boutique has the following transactions related to its top-selling Gucci purse for the month of October. Sandra's Purse Boutique uses a periodic inventory system. Date October 1 Transactions Units Unit Cost Total Cost Beginning inventory 6 $ 900 $ 5,400 October 4 Sale 4 October 10 Purchase 5 910 4,550 October 13 Sale October 20 Purchase 4 920 3,680 October 28 October 30 Sale Purchase 7 930 6,510 $20,140 4. Using weighted-average cost, calculate ending inventory and cost of goods sold at October 31. (Round your intermediate and final answers to 2 decimal places.) Ending inventory Cost of goods sold