Question 748632: word problem: In order to pass a test with 80% with 70 questions. What is the highest number of questions I can answer incorrectly?
Answer by timvanswearingen(106)   (Show Source):
You can put this solution on YOUR website! 80% of 70, assuming all the questions are weighted the same, is 56. (.80)(70)=56
Thus, the minimum amount you could get right is 56 out of 70 for an 80%.
70-56=14
Therefore, you can miss 14 questions at most.
Alternatively, if you want 80% right, you could have at most 20% wrong.
20% of 70 is (.20)(70)=14
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