specify text grade

I am trying to specify the grade boundaries for exams that are out of 120

93 out of 120 is A*
84 out of 120 is A
75 out of 120 is B
67 out of 120 is C
etc....
Can anyone suggest how to se these up

Thanks

Hello Nurmohamed,
For the scores you've provided, it would go like this:
A* is 77%
A is 70%
B is 65%
C is 55%

You'll find this post here with the details