Had a good experience with this interview even though I did not receive an offer. I am not comfortable with doing math on the spot, so I had a little trouble with the case. The interviewer asked some qualitative questions about the case before moving on to the quantitative portion. The case dealt with a freight shipping scenario. There was a lot of break even analysis and profit maximization questions. If you are quick with math and know basic calculations, you will have no problem with the case interview. My interviewer was very kind and helped me when I had trouble. Just stay calm and be prepared to explain your answer and your reasoning. They are looking for someone who knows what they're doing, but also someone who isn't afraid to admit when they're wrong. Be enthusiastic and confident, and you shouldn't have any trouble with this interview.