Assume an outlet of Bentley began October 2022 with 40 purses that cost the store $40 each. The sale price of these purses was $70. During October, the store completed these inventory transactions: October 3 Sale 16 units $70 sale price October 8 Purchase 80 units at $41 per unit October 11 Sale 24 units at $70 sale price October 19 Purchase 9 units at $40 unit price October 24 Sale 30 units at $72 sale price October 30 Purchase 18 units at $42 unit price Required: Determine the store's cost of goods sold, gross profit and ending inventory using the following methods. Assume the perpetual system is used. FIFO Weighted average How would your answer change under (a) FIFO and (b) weighted-average cost if the periodic system was used?