How to calculate final exam grades?

[summerwonder]

For example:
17/30 for class assessment (worth 30% of final grade)
18/30 for assignment (worth 30% of final grade)
How do you figure out how much you would need for the final exam (worth 40% of final grade)

Thanks!

 

[Simon Bridge]

Welcome to PF;
Hint: what are percentages?

If the final exam were marked out of 40, would that help?

 

[Matterwave]

You also need to know if and how the professor curves the grade, and what your goal is for your grade.