80%
The grade is 63.
That is about a "C".
10/13 right = 77% grade
87 and 30 is 117 wrong.
It is 75
80%
68
67% or D+
21 - thirty minus nine is 21.
It depends on the test. Some tests penalise wrong answers, others don't.
8/13 right = 62 %
6 wrong out of 30 leaves 24 correct out of 30. Divide 24 by 30 to get 80%. 80% is usually a B or a B-, unless grading is on a curve. If it is on a curve, then it is impossible for me to say without knowing what the curve is.
Your grade will be a 75 or a "C" ,"C" is lower than a 70 so that means it will prabaly be a bad grade
30 - 5 = 25 correct answers. 25/30 x 100 = 83% (rounded to a whole number)
If you get 20 wrong out of 50 questions what is your grade?
You are only two years apart in age. There is nothing wrong with you dating him. But if you're in grade 10 and he's in grade 8 then that might be sort've weird.