The workbooks are the two bottom photos attached. I can attach the documents so you can open them.

Sales Workbook:

Market Workbook:

As a regional sales manager for CKG Auto, you have just finished summarizng sales data for the first half of this year (January through June) aggregated by car model. You have started to enter data in an Excel worksheet, which lists by model the following Sales Volume, indicating the number of cars sold to dealers. Manufacturing (Mfg.) Cost per Vehicle