21 out of 40 as a Percentage
21 out of 40 is 52.50%, which is a letter grade of F.
Percentage
52.50%
Letter Grade
F
Wrong Answers
19
Simplified
21/40
Understanding the Calculation
To convert 21 out of 40 into a percentage, divide the correct answers (21) by the total questions (40) and multiply by 100:
(21 ÷ 40) × 100 = 52.50%
With 21 correct answers out of 40, you got 19 wrong. The fraction 21/40 simplifies to 21/40. On the standard grading scale, 52.50% corresponds to a F.