Smart Professior

It was a couple days before exams and a group of collage students decide to drive somewhere awhile away to party and they decided they would drive back just in time to do last minute studying for the exam. They got caught up in the partying and didn't get back in time. So they decided to tell the professeur that they all met up at a friends and on their way back a tire broke and they couldn't fix it fast enough or get a ride so thats why they missed it. The professeur said he understood and that they could still take the exam. He placed them in different rooms to do their exams. On the first page it was easy questions that was worth 5 points, so they all thought it was going to be a simple test. When they moved onto page two there was a question worth 95 points. The question was "Which tire was it?"