Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transactions for March. Activities Units Sold at Retail Units Acquired at Cost 190 units $52.80 per unit 270 units $57.80 per unit Date Mar. 1 Beginning inventory Mar. 5 Purchase Mar. 9 Sales Mar. 18 Purchase Mar. 25 Purchase Mar. 29 Sales 350 units$87.80 per unit 130 units$62.80 per unit 240 units $64.80 per unit 220 units $97.80 per unit 570 units Totals 830 units Problem 5-1A Part 4 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, the March 9 sale consisted of 110 units from beginning inventory and 240 units from the March 5 purchase; the March 29 sale consisted of 90 units from the March 18 purchase and 130 units from the March 25 purchase. (Round weighted average cost per unit to two decimals and final answers to nearest whole dollar.) Gross Margin FIFO LIFO Avg. Cost Spec. ID ales Less: Cost of goods sold Gross profit