A gynecologist had a burning desire to change careers and become a mechanic. So she found out from
her local tech school what was involved, signed up for evening classes and attended dilligently, learning all she could. When
the time came for the final exam, she was prepared and she completed the exam with tremendous skill.
When the results came back, she was surprised to find that she had obtained a mark of 150%. Fearing
an error, she called the instructor says, "I don't want to appear ungreatful for such an outstanding result, but I wonder
if there has been an error that needs to be adjusted."
The instructor said, "During the exam you took the engine apart perfectly, which was worth 50% of the
total mark. You also put the engine back together again perfectly which was also 50% of the total. I gave you an extra 50%
because you did it all THROUGH the muffler!!"