100 Hours and a class to me is more than adequate. But we are all different. I know someone who passed studying maybe 15 hours, I kid you not. But most of the people I know passed took review classes.
But like most people there is not set amount of hours that is adequate. Just do enough to...
I passed the California PE exam and it took me three times.
1st time: I didn't have time to study but studied about 10 hrs of CERM depth topic questions (WR/ENV). I did not take a review class. I got 52/80 questions correct for 8hr, 31/40 for the depth. I was 10 points away from passing...
