Salmone Company reported the following purchases and sales of its only product. Salmone uses a periodic inventory system. Determine the cost assigned to ending inventory using LIFO. Date May 1 May 5 May 10 May 15 May 24 Activities Beginning inventory Purchase Sales Purchase Sales Units Acquired at Cost 150 units @ $10 = $1,500 220 units $12 $2,640 Units Sold at Retail = 140 units @ $20 100 units @ $13 = $1,300 90 units @ $21