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 230 units @ $53.60 per unit Mar. 5 Purchase 290 units @ $58.60 per unit Mar. 9 Sales 390 units @ $88.60 per unit Mar. 18 Purchase 150 units @ $63.60 per unit Mar. 25 Purchase 280 units @ $65.60 per unit Mar. 29 Sales 260 units @ $98.60 per unit Totals 950 units 650 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 130 units from beginning inventory and 260 units from the March 5 purchase; the March 29 sale consisted of 110 units from the March 18 purchase and 150 units from the March 25 purchase. (Round weighted average cost per unit to two decimals and final answers to nearest whole dollar.)