Hla Sundus,it depends on alot of factors tbh, such as the English level, the commitment to your plan, study time quality.On average, 150 hrs will be enough for the first part, 110 hrs for the second part- as per Gleim.
I've spent more time for studying it, since i was graduating from uni and worked 4 yrs and had to go back studying.just look for the study material that fits you, some are good for people who prefer the detailed info, you'll find a comparative articles on google that will help you decide.best of luck!
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