x/84 = 0.70
x = 59 right; that means 84-59 = 25 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.
Each question is worth 2.5 percent. You can get 8 wrong.
30
14 of them.
5
You can get 20 questions 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.
Each question is worth 2.5 percent. You can get 8 wrong.
30
14 of them.
5
You can get 63 questions wrong and get 70%.
11
50
15 wrong
You can get 18 wrong.
69 questions