Getting the Mechanics

There was a Gynecologist who decided he no longer wanted to practice. Instead he wanted to restore old cars. To prepare himself for this career change, he signed up for a mechanics course in engine repair. He studied really hard, and the day arrived for the final exam. The task was to find out what was wrong with the engine and repair it. The Gynecologist took a little longer than the rest of the class, but he got the job done. A couple of days later he went to see how he did. Up on the wall, beside his name he saw a mark of 150%. He was really puzzled so he went to the instructor. "How can this be?" he asked. The instructor replied, "Well, I gave you 50 points for figuring out the problem, and 50 points more for solving the problem. But I had to give you an extra 50 points for doing all the work through the exhaust pipe!"