Norris Company uses the perpetual inventory system and had the following purchases and sales during March Purchases Sales Units Unit Cost Units Selling Price/Unit 3/1 Beginning inventory 100 $40 3/3 Purchase 60 $50 3/4 Sales 70 $80 3/10 Purchase 200 $55 3/16 Sales 80 $90 3/19 Purchase 40 $60 3/25 Sales 120 $90 Instructions Using the inventory and sales data above, calculate the value assigned to cost of goods sold in March and to the ending inventory at March 31 using (a) FIFO and (b) LIFO