Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transactions for March. Activities Date Mar. 1 Beginning inventory Mar. 5 Purchase Mar. 9 Sales Units Sold at Retail Units Acquired at Cost 250 units @ $54.00 per unit 300 units @ $59.00 per unit 160 units @ $64.00 per unit 300 units @ $66.00 per unit 410 units @ $89.00 per unit Totals 1,010 units 280 units @ $99.00 per unit 690 units Mar. 18 Purchase Mar. 25 Purchase Mar. 29 Sales Problem 6-1A Part 4 . Compute gross profit earned by the company for each of the four costing methods. For specific identification, the March 9 sale consisted of 140 units from beginning inventory and 270 units from the March 5 purchase; the March 29 sale consisted of 120 units rom the March 18 purchase and 160 units from the March 25 purchase. (Round weighted average cost per unit to two decimals an inal answers to nearest whole dollar.) Gross Margin Sales Less: Cost of goods sold Gross profit FIFO LIFO Avg. Cost Spec. ID