Required information [The following information applies to the questions displayed below.] Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transactions for March. Date March 1 March 5 Activities Beginning inventory Purchase Units Acquired at Cont Units Sold at Retail 210 units $53.20 per unit 280 units $58.20 per unit March 9 Sales 370 units $88.20 per unit March 18 March 25 March 29. Purchase Purchase Sales i 140 units 260 units $63.20 per unit $65.20 per unit Totals 890 units 240 units $98.20 per unit 610 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, the March 9 sale consisted of 120 units from beginning Inventory and 250 units from the March 5 purchase; the March 29 sale consisted of 100 units from the March 18 purchase and 140 units from the March 25 purchase. Note: Round weighted average cost per unit to two decimals and final answers to nearest whole dollar. Gross Margin Sales Less: Cost of goods sold Gross profit FIFO LIFO Average Cost Specific ID