Your score on a test is based on the number of questions answered
correctly, so the score is 35/47 = about 75%.
The letter grade for that score is completely the teacher's decision.
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it is a 52%
84 percent, that's a "B."
138 questions right and 12 questions wrong
To calculate your grade, you divide the number you got correct (9) by the total number of questions (12), which would give you 75%.
toget 80% you need .8 x 15 = 12 questions right. That means you can 15-12 = 3 questions wrong