Beginning inventory, purchases, and sales for Item Zeta9 are as follows:

Oct. 1 Inventory 51 units @ $19

Oct 7 Sale 39 units

Oct 15 Purchase 38 units @ $21

Oct 24 Sale 17 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 = $

b. Inventory value on October 31 = $