Flat Tire

At Duke University, there were four sophomores taking Organic Chemistry.  They were doing so well on all the quizzes, midterms and labs, etc., that  each had an "A" so far for the semester. These four friends were so confident that the weekend before finals, they  decided to go up to the University of Virginia and party with some friends  there. They had a great time, but after all the hearty partying, they slept  all day Sunday and didn't make it back to Duke until early Monday morning. Rather than taking the final then, they decided to find their professor after  the final and explain to him why they missed it. They explained that they  had gone to UVA for the weekend with the plan to come back in time to study,  but, unfortunately, they had a flat tire on the way back, didn't have a spare,  and couldn't get help for a long time. As a result, they missed the final. The professor thought it over and then agreed they could make up the final  the following day. The guys were elated and relieved. They studied that night  and went in the next day at the time the professor had told them. He placed  them in separate rooms and handed each of them a test booklet, and told  them to begin. They looked at the first problem, worth five points. It was something simple  about free radical formation. "Cool," they thought at the same time, each  one in his separate room, "this is going to be easy." Each finished the problem and then turned the page. On the second page  was written: (For 95 points): Which tire? Share this on Twitter. Click on the link below: Tweet this! < Prev   Next >