i have wverything fogured out but west region profit margin. can you please show me how to get that profit margin. im doing thr dame thing as the others but its nit workimg. if yiu can shiw e the steps please.

Thomas Rallroad Company organizes its three divisions, the North (N), South (S), and West (W) regions, as profit centers. The chiaf executive officer (CEO) evaluates divisional performance, using operating income as a percent of revenues. The following quarterly income and expense accounts were provided from the triat balance as of December 31 : The company operetes three support departments; the Dispatching Department, the Equipment Mariagement Department, and the freasurer's Department. The Dispatching Department manages the scheduling and releasing of completed trains. The Equipment Management Department monages the raliroad cari company as a whole. The following additional information has been gothered: 1. Prepare quartarly income statements showing operating income for the three regions. Use three column headings: North, South, and West. Do not round your interim calculations. 2. What is the pront margin of each region? Round to one decimal place. Identify the most successful region according to the profit margin. 3. What would you include in a recommendation to the CEO for a better method for evaluating the performance of the regions? a. The method used to evaluate the performance of the regions should be reevaluated. b. A better regional performance measure would be the return on investment (operating income divided by regional assets). c. A better regional performance measure would be the residual income (operating income less a minimal retum on regional asse d. None of these choices would be included. e. All of these choices (a,b8c) would be included