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 Activities Units Acquired at Cost Units Sold at Retail Mar. 1 Beginning inventory 90 units @ $50.80 per unit Mar. 5 Purchase 220 units @ $55.80 per unit Mar. 9 Sales 250 units @ $85.80 per unit Mar. 18 Purchase 80 units @ $60.80 per unit Mar. 25 Purchase 140 units @ $62.80 per unit Mar. 29 Sales 120 units @ $95.80 per unit Totals 530 units 370 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 60 units from beginning inventory and 190 units from the March 5 purchase; the March 29 sale consisted of 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.)