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

Oct. 1		Inventory	73 units @ $18
7		Sale	50 units
15		Purchase	69 units @ $20
24		Sale	31 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.