80% of 400 = 320 = pass.
So the maximum incorrect answers should not exceed 400 - 320 = 80
You can get 60 questions wrong and get a 70 percent but if you get 61 wrong you are at a 69.5 percent.
70% of 25 is 17.5. That is you will pass with 7 (7.5) questions wrong.
Each question is worth 2.5 percent. You can get 8 wrong.
5
14 of them.
You can get 60 questions wrong and get a 70 percent but if you get 61 wrong you are at a 69.5 percent.
70% of 25 is 17.5. That is you will pass with 7 (7.5) questions wrong.
You can get 20 questions wrong.
Each question is worth 2.5 percent. You can get 8 wrong.
5
14 of them.
30
50
You can get 18 wrong.
69 questions
39
Two of them.