Can someone help me solve this Financial accounting problem?

Required information (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 150 units @ $52.00 per unit 250 units @ $57.00 per unit Date Activities Mar. 1 Beginning inventory Mar. 5 Purchase Mar. 9 Sales Mar. 18 Purchase Mar. 25 Purchase Mar. 29 Sales 310 units@ $87.00 per unit 110 units @ $62.00 per unit 200 units @ $64.00 per unit 180 units @ $97.00 per unit 490 units Totals 710 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, the March 9 sale consisted of 90 units from beginning inventory and 220 units from the March 5 purchase; the March 29 sale consisted of 70 units from the March 18 purchase and 110 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 Sales Less: Cost of goods sold Gross profit