Required information Problem 6-1A Perpetual: Alternative cost flows LO P1 [The following information applies to the questions displayed below.] Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transactions for March Units sold at Retail Units Acquired at Cost 90 units @ $50.80 per unit 220 units @ $55.80 per unit 250 units@ $85.80 per unit Date Activities Mar. 1 Beginning inventory Mar. 5 Purchase Mar. 9 Sales Mar. 18 Purchase Mar. 25 Purchase Mar. 29 Sales Totals 80 units @ $60.80 per unit 140 units@ $62.80 per unit 120 units @ $95.80 per unit 370 units 530 units Problem 6-1A 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 60 units from beginning inventory and 190 units from the March 5 purchase, the March 29 sale consisted of 40 units the March 18 purchase and 80 units from the March 25 purchase. (Round weighted average cost per unit to two decimals and f answers to nearest whole dollar.) FIFO LIFO Avg. Cost Spec. ID Gross Margin Sales Less: Cost of goods sold Gross profit