Hey, what do you mean 50 marks? In total of the exam paper?
If you just lay out the law in each question it would barely get you the marks. My lecturers have stressed about this a lot and have said, people who do this get a 3rd or less (if they do it well maybe a 2.2- that's being lucky though) Whether it's an essay or problem question you have to apply it to the question- to get max marks.
Are you sitting these exams in the supplementary period? I am!