Perpetual Inventory Using FIFO Beginning inventory, purchases, and sales for Item Zeta9 are as follows: Oct. 1 Inventory 49 units @ $18 7 Sale 38 units 15 Purchase 46 units @ $21 24 Sale 19 units Assuming a perpetual inventory system and using the first-in, first-out (FIFO) method, determine (a) the cost of the goods sold on October 24 and (b) the inventory value on October 31. a. Cost of the goods sold on October 24 $fill in the blank 1 b. Inventory value on October 31 $fill in the blank 2