So for example, if I had to come up with multiple equations to solve for three unknowns, is that a typical occurance? It's not that its hard, but I'm pretty worried about time constraints given what I've heard. I'm still guessing knowing what to do takes longer than doing it.....

Also, knowing this, lets me kind of know if i'm on the wrong path to solving a questions (i.e it shouldn't take more than 2 minutes tops kind of thing)

thanks

steve