Wiki User
∙ 11y ago39
Wiki User
∙ 11y agoIf you miss 28 questions out of 70, your score would be 60%
Don't study.
45.4545.. % wrong.
95.0%
60% D
30/100*25 =7.5 so you must not get more than 7 questions wrong to score 70%
In order to score exactly 70% on a test with exactly 70 questions ... if every questionis worth the same credit ... you have to get 21answers wrong. You can do it.
If you get 7 wrong you'll get 23/30 = 76.66... % Not enough. So fewer than 7. But that is provided that wrong answers score 0 and do not have penalties.
In order to score 80% on a test with 30 questions, you must give 6 wrong answers. You can do it!
Your score would be 90.91%
If you miss 28 questions out of 70, your score would be 60%
Don't study.
You can get 60 questions wrong and get a 70 percent but if you get 61 wrong you are at a 69.5 percent.
if you get 22 questions wrong, you will have a 78%. less then 22 wrong would mean a higher percentage and more then 22 wrong would mean a lower percentage.
.30 x 170 = 51 wrong
To score 70% or higher you must get at least 70/100 * 70 = 49 questions right. So you can get 70 - 49 = 21 questions wrong, but no more!
You can get 5 out of 50 questions wrong to get 90%.