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 Units Unit Cost Total Cost 6 $790 $4,740 October 1 October 4 Transactions Beginning inventory Sale Purchase Sale 4 October 10 5 800 4,000 October 13 3 October 20 Purchase 810 3,240 October 28 Sale October 30 Purchase 8 820 6,560 $18,540 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 4 7