For example, if only 5% in your school get 8.5/10, that's an A, but if 10 out of 10 is quite common in your school, then that's a B+
The letter grade for an 85 is a B.
A b-
B
85% or B
An 85 usually corresponds to a B letter grade on a typical grading scale.
85% or B
An 85% is a B.
Hopefully an F since you can't even spell "letter".
B
50%
80% or B-
70% or C-