ory using PIPO Beginning inventory, purchases, and sales for Item Zeta9 are as follows: Oct. 1 Inventory 80 units $17 7 Sale 53 units 15 Purchase 66 units @ $18 24 Sale 31 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 FIFO Beginning inventory, purchases, and sales for Item Zeta9 are as follows: Oct. 1 Inventory 80 units $17 7 Sale 53 units 15 Purchase 66 units $18 24 Sale 31 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