Beginning inventory, purchases, and sales for Item Zeta9 are as follows: Oct. 1 Inventory 79 units @ $18 7 Sale 51 units 15 Purchase 93 units @ $20 24 Sale 36 units Assuming a perpetual inventory system and using the first-in, first-out (FIFO) method, determine (a) the cost of goods sold on October 24 and (b) the inventory on October 31. a. Cost of goods sold on October 24 b. Inventory on October 31 Perpetual Inventory Using LIFO Beginning inventory, purchases, and sales for Item 88-HX are as follows: July 1 Inventory 90 units @ $22 8 Sale 72 units 15 Purchase 100 units @ $25 27 Sale 84 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 b. Inventory on July 31