Perpetual Inventory Using LIFO Beginning inventory, purchases, and sales for Item 88-HX are as follows: July 1 Inventory 90 units at $52 8 Sale 75 units 15 Purchase 125 units at $58 27 Sale 100 units Assuming a perpetual inventory system and using the last-in, first-out (LIFO) method, determine (a) the cost of goods sold on July 27 and (b) the inventory on July 31. a. Cost of goods sold on July 27 $ 5,800 b. Inventory on July 31 $