i need help trying to find LIFO and weighted- average

6 Saved Help Save & Exit Submit Check my work 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. Cost per Unit $850 Total Cost $ 5,100 Date October 1 October 4 October 10 October 13 October 20 October 28 October 30 860 Transactions Beginning inventory Sale Purchase Sale Purchase Sale Purchase Units 6 4 5 3 4,300 870 3,480 7 8 880 7,040 $19,920 3. Using LIFO, calculate ending inventory and cost of goods sold at October 31. Ending inventory Cost of goods sold 3. Using LIFO, calculate ending inventory and cost of goods sold at October 31. Ending inventory Cost of goods sold