This is a question that some students continue to ask but it is impossible to give a single simple answer as every individual is different in terms of how many hours on each day they have available and most importantly how difficult or straight forward each individual finds the work that needs to be done. As a basic guide however I would suggest that a student needs a minimum 100 hours with preferably more to allow for as much question practice as possible to take place – you need as much time as it takes you personally!