Knowledge Check 01 Assume that we use a perpetual inventory system and that five identical units are purchased at the following dates and costs: April 5 $10 April 10 $12 April 15 $14 April 20 $16 April 22 $17 One unit is sold on April 25. The company uses the first-in, first-out (FIFO) inventory costing method. Identify the cost of the ending inventory on the balance sheet.