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 March 9 Sales March 18 March 25 March 29 Purchase Purchase Sales Totals Units Acquired at Cost 80 units $50.60 per unit 215 units @$55.60 per unit 75 units $60.60 per unit 130 units @$62.60 per unit 500 units Units Sold at Retail 240 units $85.60 per unit 110 units $95.60 per unit 350 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 55 units from beginning inventory, 185 units from the March 5 purchase, 35 units from the March 18 purchase, and 75 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