omework A Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transac for March Date Activities Units sold at Retail Mar. Beginning inventory Mar. 5 Purchase Units Acquired at Cost 170 units to @ $52.40 per unit 260 units @ $57.40 per Mar. 9 Sales 22 330 units unit @ $87.40 per Mar. 18 Purchase 120 units @ $62.40 per unit Mar. 25 Purchase 220 units @ $64.40 per uni Mar. 29 Sales 200 units @ $97.40 per unit 530 units Totals 770 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, the March consisted of 100 units from beginning inventory and 230 units from the March 5 purchase, the March 29 sale consisted of from the March 18 purchase and 120 units from the March 25 purchase. (Round weighted average cost per unit to two de final answers to nearest whole dollar.)