Perpetual Inventory Using LIFO Beginning inventory, purchases, and sales for Item 88-HX are as follows: Oct. 1 Inventory 84 units @ $20 8 Sale 67 units 15 27 Purchase Sale 93 units @ $24 78 units Assuming a perpetual inventory system and using the last-in, first-out (LIFO) method, determine (a) the cost of goods sold on Oct. 27 and (b) the inventory on Oct. 31. a. Cost of goods sold on Oct. 27 b. Inventory on Oct. 31