In order to score exactly 70% on a test with exactly 70 questions ... if every question
is worth the same credit ... you have to get 21answers wrong. You can do it.
Each question is worth 2.5 percent. You can get 8 wrong.
You can get 60 questions wrong and get a 70 percent but if you get 61 wrong you are at a 69.5 percent.
You can get 63 questions wrong and get 70%.
69 questions
Nine.
20
22 questions can be wrong. This means that you would have to get 33 marks, which is 60%
You can get 20 questions wrong.
10 can be wrong and 30 right; 30/40 = 75%
30
14 of them.
5