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 March 29 Sales Totals Purchase Units Acquired at Cost 170 units @ $52.40 per unit 260 units @$57.40 per unit 120 units $62.40 per unit 220 units @$64.40 per unit Units Sold at Retail 330 units $87.40 per uhit 770 units 200 units @$97.40 per unit 530 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 100 units from beginning inventory, 230 units from the March 5 purchase, 80 units from the March 18 purchase, and 120 units from the March 25 purchase. (Round weighted average cost per unit to two decimals and final answers to nearest whole dollar.) Answer is complete but not entirely correct. Gross Margin FIFO LIFO Sales $ 106,500 $106,500 Weighted Average $ 106,500 Specific ID $ 106,500 Less: Cost of goods sold Gross profit 68,880 37.620 $ 37,260 69,240 69,132 69,180 S 37,368 37,320