A (96%)
75% or C
6
every question is 2 points
17/19 = 89% = B+
90+10 divided by 2=50
75% or a "C".
To get at least 90% on a 50 question test, you can miss no more than 5 questions.
2 * (50 - x) = 70 50 - x = 35 x = 15 You can miss 15 questions.
Missing two questions = getting eight questions correct. 8/10 = 80%
You can solve this in two steps * First find out how many questions you DIDN'T miss. * Then convert (questions not missed) / (total questions) into a percentage. The above assume that you want a percentage; it also assumes that all questions have the same weight.
77%
83%
Even if you assume the questions are all worth the same number of marks, the answer may well depend on the grade boundaries.
87% or B+
75% or C
4 of 6
Think about it this way: If you have 50 questions, each one would be worth 2 points in order to make a grade of 100. That means you can miss 5 questions before you get down to 90 (5 x 2 = 10).