Salmone Company reported the following purchases and sales of its only product. Salmone uses a perpetual inventory system. Determine the cost assigned to cost of goods sold using LIFO.

Date	Activities	Units Acquired at Cost	Units Sold at Retail
May 1	Beginning Inventory	188 units @ $10
5	Purchase	258 units @ $12
10	Sales		178 units @ $20
15	Purchase	138 units @ $13
24	Sales		128 units @ $21