Before getting started, we'll choose the preferred interviewer's profile, from cheerful and helpful to dry and harsh. We'll then start with 10 mins of personality testing to understand how you would present and position yourself. Aprox. 35 mins are reserved for solving the case, after which we'll go into a 15 mins detailed feedback session. As everything else, the time distribution is very flexible and based on your preferences, however, I would always recommend this approach based on my previous experience with a variety of successful candidates.
Cases range from marketing sizing, over P&L to strategy. You take the pick ;)...
Looking forward to help you on track for a career in one of the top-3 consulting firms!