As a percentage 18 out of 20 is 90%
c
The answer depends on the grade boundaries
letter grade=C your dumb
70% usually a C-
60% D
38% would be an F. If you got 38 out of 60 answers correct your grade would be 63% or letter grade D or F, depending on your grading scale.
Not sure if your 64 is a paper or test grade. We also don't know the number of points possible. If you got a 64 out of 70 possible that would be an A , but if you got 64 out of a 100 that would be a low C nearly a D.
It is: 63%
Usually every "A" you receive on a report card is allocated 4 points every "B" 3 points, "C" 2 points "D" 1 point "F" (fail) 0 points The total is then divided by the number of courses for which you received a grade, and the result is the grade point average. Thus if you took six courses and received a "B" in each, you would have 18 points, divided by the six courses for a 3.0 grade point average. Of course if you took six courses, got 2 "A"s 2 "B"s and 2 "C"s you would still have 18 points divided by the six courses and, once again, a grade point Average of 3.0. That's why it's called a GPA, or Grade Point AVERAGE. A GPA 3.0 is referred to as a "B" average, it doesn't mean you got a "B" in every course, but it was the AVERAGE value of the letter grade you received
You divide the number of points you got by the number of points possible, then multiply by 100.
As a percentage it is 85.85%
What is 58.33 as a letter grade