I have to answer the following for ending inventory/COGS

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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 Transactions Units Unit Cost Total Cost October 1 Beginning inventory 6 $ 780 $ 4,680 October 4 Sale 4 October 10 Purchase 5 790 3,950 October 13 Sale 3 October 20 Purchase 4 800 3,200 October 28 Sale 7 October 30 Purchase 6 810 4,860 $ 16,690 4. Using weighted-average cost, calculate ending inventory and cost of goods sold at October 31. (Round your intermediate and final answersto 2 decimal places.)