If a multiple-choice question has five answer choices and you submit one wrong answer before getting the question correct, how much credit will you lose for that part of the question?

Given that a question has five options you have to choose from. This gives you a 20% chance of predicting the answer even if the question is not familiar to you or you are not good in guessing the answer.  If your first answer is wrong, the chance you lost in guessing the answer correctly is 20%.

Getting the question right on the first try would give you 100 percent. If you divide 100 by the 5 choices each is worth 20 percent, so each wrong answer would take away 20 percent, therefore, you would lose 20 percent by submitting one wrong answer.

No the ratio is not 5 to 7