Maybe you are not expected to do all of them (I wouldn't!).
So you do 75...first 25 to 7, next 25 to 8, last 25 to 9, but you are done.
I am guessing that was the intent.
though I would also probably just do straight up XP or do it by major milestones that would award for something other then going through lots of rooms.
Its expected you do all the rooms?
Its expected you do all the rooms?