Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transactions for March. Compute gross profit earned by the company for each of the four costing methods. For specific identification, the March 9 sale consisted of 85 units from beginning inventory and 215 units from the March 5 purchase: the March 29 sale consisted of 65 units from the March 18 purchase and 105 units from the March 25 purchase. (Round weighted average cost per units to two decimals and final answers to nearest whole dollar.)