I passed the AMC 12B with a score of 144/150; that's 24 questions correct out of a total of 25 answered, for those not aware. That may not sound like much, but the problems are fairly difficult (in my opinion), and a major obstacle is the fact that you only get 75 minutes to answer all the questions, which comes out to an average of 3 minutes per question--hardly an easy task. (A stupid mistake on Problem 8 cost me a perfect score.) Overall, though, I feel I did pretty well!