You got 89 percent. Hence, you answered 89/100*150 = 133.5 questions.
hence you missed 150 - 133.5 = 16.5 questions.
Eight of them.
Four questions.
66
You answered 23 questions incorrectly.
40
You will have scored 80 out of 150 thus answered 70 questions incorrect.
You can miss 10% of questions, or 12 questions
1400.
7.5 questions
Eight of them.
3 out of 10
To get exactly 90% you need to miss 5.6 questions.
33
20
Four questions.
0.70 x 125 = 88 questions right You can miss 125-88 = 37 questions to get 70 percent But you got to get all the rest correct!
19