Beginning inventory, purchases, and sales for Item Zeta9 are as follows: Date Line Item Description Value Oct. 1 Inventory 200 units at $40 Oct. 7 Sale 180 units Oct. 15 Purchase 180 units at $45 Oct. 24 Sale 150 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 fill in the blank 1 of 2 b. Inventory on October 31 fill in the blank 2 of 2