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 Cost Units Sold at Retail 90 units 220 units $50.80 per unit @ $55.80 per unit. March 9 Sales 250 units $85.80 per unit March 18 March 25 March 29 Purchase Purchase Sales Totals 80 units 140 units 530 units $60.80 per unit @ $62.80 per unit 120 units @ $95.80 per unit 370 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 60 units from beginning inventory, 190 units from the March 5 purchase, 40 units from the March 18 purchase, and 80 units from the March 25 purchase. (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 Weighted Average Specific ID