It is: 14/17 or 82.353% rounded to 3 decimal places providing that they are all correct answers
-12
Providing that the other 5 questions are correct then it is a 62.5% score
two third
12/15 80%
If they all count the same, that's 67% right.
It is: 30/35 or 85.714% to 3 decimal places providing all answered questions were correct
Your score is 75.
25%
88%
two third
70
Simply multiply 75 by .3 to get your answer: You can miss 22.5 questions and still get a "C-"