35%
90% of 21 = 18.9So, in order to score 90% on a test with 21 questions,you can't miss more than two of them.
You would divide ten by fourteen. The answer would be 71.4%.
33%
6 wrong means 14 correct. 14/20 * 100% is 70%.
35
24 of them.
6 of them.
40
The answer will depend on how many of the ones you do manage to answer are correct!
You can miss 10% of questions, or 12 questions
No more than 15.But why miss any ?
18
25 questions missed
To get exactly 90% you need to miss 5.6 questions.
No more than 19. You can do it!
No more than 17 of them.