.30 x 170 = 51 wrong
51 of them.
34
You can miss 10 questions. 50-10=40. 40/50=4/5=0.8=80%.
Assuming the questions are all weighted the same, you can miss 5 and score 90%.
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.
You can miss 10% of questions, or 12 questions
In order to score 80% on a test with 30 questions, you must give 6 wrong answers. You can do it!
Your score is 73.33%
If you miss five questions out of 30, your score is a 83.33%
You can miss 10 questions. 50-10=40. 40/50=4/5=0.8=80%.
If you miss 28 questions out of 70, your score would be 60%
Assuming the questions are all weighted the same, you can miss 5 and score 90%.
You can miss 10% of questions, or 12 questions
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.
In order to score 80% on a test with 30 questions, you must give 6 wrong answers. You can do it!
Assuming that all questions score equally, you can miss out at most 7. And then need to get them all correct.
73 questions on the test, all worth the same credit. Score 79% means you got -- 58 correct (79.452%) -- 15 wrong (20.548%)
1400.
7.5 questions