Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transactions for March. Date March 1 Units Acquired at Cost Units Sold at Retail Shrek my work March 5 Activities Beginning inventory Purchase 220 units 285 units @ March 91 Sales March 18 March 25 March 29 Purchase Purchase Sales 145 units 270 units $53.40 per unit $58.40 per unit @ $63.40 per unit @ $65.40 per unit 380 units $88.40 per unit Totals 920 units 250 units $98.40 per unit 630 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 125 units from beginning inventory, 255 units from the March 5 purchase, 105 units from the March 18 purchase, and 145 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