Perpetual Inventory Using FIFO Beginning inventory, purchases, and sales for Item Zeta are as follows: Oct. 1 Inventory 79 units $23 7 Sale 59 units 15 Purchase 58 units $26 24 Sale 24 units Assuming a perpetual inventory system and using the first in first-out (FFO) method, determine the cost of goods sold on October 24 and (b) the inventory on October 31 Cost of goods sold on October 24 b. Inventory on October 31