toget 80% you need .8 x 15 = 12 questions right. That means you can 15-12 = 3 questions wrong
8 wrong i.e. 32 right 10% of 40 is 4 80% = 8 x 4 = 32 40 - 32 = 8
Each question is worth 2.5 percent. You can get 8 wrong.
It is 75
The 2 questions that were wrong equals 25% of the score because each question is 12.5%. So if 2 questions out of 8 were wrong the score would come out to 75%. The equation to get the answer is (100 / 8 = 12.5) So (12.5 x 2 = 25) Now that you know that the questions that were answered wrong equals 25% just do (100% - 25% = 75%) So then 75% is your answer.
toget 80% you need .8 x 15 = 12 questions right. That means you can 15-12 = 3 questions wrong
8 wrong i.e. 32 right 10% of 40 is 4 80% = 8 x 4 = 32 40 - 32 = 8
Each question is worth 2.5 percent. You can get 8 wrong.
It is 75
http://dmvanswers.com/questions/297/How-many-questions-do-I-have-to-get-right-to-pass-drivers-permit-test
The 2 questions that were wrong equals 25% of the score because each question is 12.5%. So if 2 questions out of 8 were wrong the score would come out to 75%. The equation to get the answer is (100 / 8 = 12.5) So (12.5 x 2 = 25) Now that you know that the questions that were answered wrong equals 25% just do (100% - 25% = 75%) So then 75% is your answer.
68% D+
Average(1, 8, 3) = (1 + 8 + 3)/3 = 12/3 = 4
what wrong question 8========)
60% right, 40% wrong.
The average of 1/2 and 1/4 is the average of 2/4 and 1/4 which is the average of 4/8 and 2/8 which is 3/8
90% of 80 right means 10% of 80 wrong, which means 10/100 x 80 = 1/10 x 80 = 1/1 x 8 = 8 questions wrong.