You can miss 10 questions.
50-10=40.
40/50=4/5=0.8=80%.
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10
In order to score 80% on a test with 30 questions, you must give 6 wrong answers. You can do it!
The answer will depend on the total score for the test and whether or not all the questions are score the same.
In order to score 95% or better, you must answer at least 76 questions correctly. We're hoping it's not a math test.
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.
30/100*25 =7.5 so you must not get more than 7 questions wrong to score 70%
you can't answer the question if you don't know how many total questions there are
14.
39
In order to score 80% on a test with 30 questions, you must give 6 wrong answers. You can do it!
The answer will depend on the total score for the test and whether or not all the questions are score the same.
The answer depends on how many of the ones that you do are correct and whether there are any penalties for wrong answers.
In order to score 95% or better, you must answer at least 76 questions correctly. We're hoping it's not a math test.
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.
30/100*25 =7.5 so you must not get more than 7 questions wrong to score 70%
If you score 1 per question, then you can miss out -40. If you score 10 per question, then you can miss out 104. If you score 100 per question, then you can miss out 118.
To get a 50% on the test, you need at least (50/100) * 35 = 17.5 questions correct. If half credit is not possible, you need to get at least 18 questions correct to get a score of at least 50%. A score of 17 will be just shy of 50%.
If there are 180 questions and you have to score a 75%, how many questions can you miss?