Required information [The following information apples 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. Transactions Beginning inventory Date Units October 1 6 Unit Cost $880 Total Cost $ 5,280 October 4 Sale 4 October 18 Purchase 4,458 October 11 Sale October 20 Purchase 4 900 3,600 October 26 October 30 Sale 7 Purchase B 910 7,280 $20,610 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 Cast of goods sold