Perpetual Inventory Using LIFO Beginning inventory, purchases, and sales for Item 88-HX are as follows: Oct. 1 Inventory 80 units $19 B Sale 64 units 15 Purchase 89 units $22 27 Sale 75 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