Calculator Beginning inventory, purchases, and sales for Product XCX are as Ows $15 Sept. 1 Beginning Inventory 5 Sale 25 units 15 units 25 units 17 Purchase $16 30 Sale 15 units Assuming a perpetual Inventory system and the last-In, first-out method, determine (a) the cost of the merchandise sold for the September 30 sale and (b) the inventory on September 30. a) Cost of merchandise sold $ $ b) Inventory, September 30