Opening: Provide an overview of the memo itself to inform the reader what the outline will encompass. Calculate the industry concentration using the file named Marketshare.xls (Note: Page 209 begins the Measures of Industry Concentration) Then calculate the post-merger concentration. Marketshare.xlsxDownload Marketshare.xlsx Compare and contrast the pre- merger and post-merger concentrations providing differences. Conclude with a comparison of anti-trust guidelines..