Perpetual Inventory Using FIFO Beginning inventory, purchases, and sales for Item Zeta9 are as follows: Oct. 1 Inventory 69 units @ $19 7 Sale 54 units 15 Purchase 73 units $21 24 Sale 22 units Assuming a perpetual Inventory system and using the first in, first-out (Furch 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