[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. 1. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 55 inits from beginning inventory, 185 units from the March 5 purchase, 35 units from the March 18 purchase, and 75 units from the March 5 purchase. Note: Round weighted average cost per unit to two decimals and final answers to nearest whole dollar