Okay, let’s calculate this. Mark has skills in management consulting, systems analysis, and project management, which are in demand. He has a degree from Purdue University, which is a reputable institution. Considering his skills and education, I would estimate his hourly rate to be around $125, which is below the national average for management consultants in the United States. This is because his skills are more focused on systems analysis and project management, which are in demand but may not be as highly paid as other management consulting skills. However, his location in Indianapolis, Indiana, is not a major hub for management consulting, which may also contribute to a lower rate.