A company reports the following beginning inventory and two purchases for the month of January. On January 26 , the company sells 260 units. Ending inventory at January 31 totals 120 units. tequired: assume the perpetual inventory system is used. Determine the costs assigned to ending inventory when costs are assigned based on he FIFO method. A company reports the following beginning inventory and two purchases for the month of January. On January 26 , the company sells 260 units. Ending inventory at January 31 totals 120 units. equired: Issume the perpetual inventory system is used. Determine the costs assigned to ending inventory when costs are assigned based on he FIFO method