Beginning inventorypurchases, and sales for Item Zeta9 are as follows: Oct. 1Inventory 64 units $15 7Sale45 units 15 Purchase72 units $16 24 Sale 24 units Assuming a perpetual inventory system and using the first- in, first-out (FIFO) method, determine ( ) the cost of the goods sold on October 24 and (b) the value of inventory on hand on October 31. a . Cost of the goods sold on October 24 b . Inventory value on October 31