Summer Associate

I applied through campus career website and was invited to an 1 on 1 interview. I did a research on the interviewer but when I came to the interview, I was informed that they just changed the interviewer because of some emergency, which I was not prepared for. We started with a few fit questions and then she asked me to work on a case study. It was not a case study that you would see in consulting interviews. It was more like your Macroeconomics professor and Microeconomics professor came to sit down together and ask you to solve a problem set in front of them. Unfortunately, the semester just started, I forgot macro stuff I learned in Fall and micro stuff had not really came to my mind yet.