THE FINAL EXAM

THE FINAL EXAM

At Penn State University , there were four sophomores taking chemistry and
all
of them had an 'A' so far.

These four friends were so confident that, the weekend before finals, they
decided to visit some friends and have a big party. They had a great
time but after all the hearty partying they slept all day Sunday and
didn't make it back to Penn State until early Monday morning.

Rather than taking the final then, they decided that after the final
they would explain to their professor why they missed it. They said that
they visited friends but on the way back they had a flat tire. As a
result, they missed the final. The professor agreed they could make up
the final the next day. The guys were excited and relieved. They
studied that night for the exam.

The next day the Professor placed them in separate rooms and gave
them a test booklet. They quickly answered the first problem worth
5 points. Cool, they thought! Each one in separate rooms, thinking
this was going to be easy... then they turned the page. On the second
page was written...

For 95 points:

Which tire? ________