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 180 units @ $52.60 per unit 265 units @ $57.60 per unit Units Sold at Retail March 9 Sales 340 units @ $87.60 per unit March 18 March 25 March 29 Purchase Purchase Sales 125 units @ $62.60 per unit 230 units @ $64.60 per unit Totals 800 units 210 units @ $97.60 per unit 550 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 105 units from beginning Inventory, 235 units from the March 5 purchase, 85 units from the March 18 purchase, and 125 units from the March 25 purchase. (Round weighted average cost per unit to two decimals and final answers to nearest whole dollar.)