Beginning inventory, purchases, and sales for Item Zeta 9 are as follows: Oct 1 66 units $24 Inventory Sale 7 48 units 15 Purchase 46 units $25 24 Sale 25 units Assuming a perpetual inventory system and using the first in first-out (FFO) method, determine (a) the cost of goods sold on October 24 and (b) the inventory on October 31 3. Cost of goods sold on October 24 b. Inventory on October 31