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Q: How many questions can you get wrong on a test that has 100 questions in order to get a 78 percent?

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39

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

You can get 18 wrong.

15 wrong

69 questions

Two of them.

70% of 25 is 17.5. That is you will pass with 7 (7.5) questions wrong.

24 wrong answers

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.

95% of the questions, provided there are no penalties for wrong answers.

20

Nine.

22 questions can be wrong. This means that you would have to get 33 marks, which is 60%

You can get 60 questions wrong, which leaves you with 140 answers correct, giving you 70%.

You can get at most 20% wrong. 20% of 16 is 16*20/100 = 3.2 Since you cannot get 0.2 questions wrong, the maximum possible is 3 questions.

80% of 80 is 64 64 right answers right and 16 wrong answers