Salmone Company reported the following purchases and sales of its only product. Salmone uses a perpetual inventory system. Determine the cost assigned to the ending inventory using FIFO. Activities Date May 1 May 5 Beginning inventory Purchase Units Acquired at Cost 154 units @ $10 = $1,540 224 units @$12 = $2,688 Units Sold at Retail May 10 Sales May 15 Purchase 104 units @ $13 = $1,352 May 24 Sales 144 units @ $20 94 units @ $21