To achieve an 80% score on a 55-question test, you would need to answer 44 questions correctly (55 questions x 0.80 = 44 questions). To find out how many questions you can get wrong, subtract the number of correct answers from the total number of questions: 55 total questions - 44 correct answers = 11 questions wrong. Therefore, you can get 11 questions wrong on a 55-question test and still achieve an 80% score.
69 questions
20
22 questions can be wrong. This means that you would have to get 33 marks, which is 60%
7 wrong out of 22 questions = 31.8% wrong. 15 correct out of 22 questions = 68.2% correct. I hope it wasn't a math test.
10 can be wrong and 30 right; 30/40 = 75%
69 questions
Nine.
39
45.4545.. % wrong.
40% were wrong.
20
22 questions can be wrong. This means that you would have to get 33 marks, which is 60%
7 wrong out of 22 questions = 31.8% wrong. 15 correct out of 22 questions = 68.2% correct. I hope it wasn't a math test.
10 can be wrong and 30 right; 30/40 = 75%
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%
.30 x 170 = 51 wrong