80% = 0.8
0.8 x 50 = 40
16 of them.
The answer depends on how many of the ones that you do are correct and whether there are any penalties for wrong answers.
The answer will depend on how many of the ones you do manage to answer are correct!
You can get 60 questions wrong, which leaves you with 140 answers correct, giving you 70%.
You can miss 40% = 70*40/100 = 28. However, that depends on two things: one is that you get all the remaining answers correct and also that you are not penalised for wrong answers.
16 of them.
Assuming that you get all your answers correct (can you rely on that?), you can miss 12.
Mixture? There are many correct answers to this question.
The answer depends on how many of the ones that you do are correct and whether there are any penalties for wrong answers.
80% of 20 = 20*80/100 = 16
You need 18 correct answers to get 72 % 17 correct is only 68 %
41 = 82%, 42 = 84%...
The answer will depend on how many of the ones you do manage to answer are correct!
138 correct answers. 138/150=92
If there are 40 questions - each question is worth 2.5 % of your final mark. Therefore 28 correct answers will give you a 70% pass.
You can get 60 questions wrong, which leaves you with 140 answers correct, giving you 70%.
If you miss 6 questions you will get an 85% on a 40 question test. To calculate various test score questions, simply divide the number of correct answers by the number of total questions. For example, on your particular question, if you divide 34 (the number of correct answers) by 40 (the total number of test questions), the answer is .85, or 85%.