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