21 out of 30 as a Percentage
21 out of 30 is 70.00%, which is a letter grade of C-.
Percentage
70.00%
Letter Grade
C-
Wrong Answers
9
Simplified
7/10
Understanding the Calculation
To convert 21 out of 30 into a percentage, divide the correct answers (21) by the total questions (30) and multiply by 100:
(21 ÷ 30) × 100 = 70.00%
With 21 correct answers out of 30, you got 9 wrong. The fraction 21/30 simplifies to 7/10. On the standard grading scale, 70.00% corresponds to a C-.