I solved the HF Final exam today and I just got %51 on it. It was very difficult for me. I am getting about %80 on whizlabs exams. Tomorrow I will get the exam is Head First very difficult compared to real exam?
Yes. Many ranchers tell that they approximately get +20% at the exam. But don't take it for granted
That 20% was for the first edition's mock exam.
If you're doing the 2nd edition's mock, it's extremely more difficult. For the 2nd edition, you can probably double your score and then subtract 20%. So scoring 50% on the mock would get you around 80% on the real exam. Let us know how you do to see if this new formula fits for you.