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 March 9 Sales March 18 Purchase March 25 Purchase Units Acquired at Cost 150 units $52.00 per unit 250 units @ $57.00 per unit 110 units @ $62.00 per unit 200 units @ $64.00 per unit Units Sold at Retail 310 units @ $87.00 per unit March 29 Sales Totals 710 units 180 units @ $97.00 per unit 490 units ences 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 90 units from beginning inventory, 220 units from the March 5 purchase, 70 units from the March 18 purchase, and 110 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