Percentage = (Score/Total Score) * 100
Percentage = (913/1000) * 100
Percentage ≈ 91.3%
Now, let's assign letter grades based on typical grading scales:
A: Typically represents outstanding achievement and is often associated with a percentage range of 90%-100%.
B: Usually indicates above-average performance and may correspond to a percentage range of 80%-89%.
C: Generally denotes average or satisfactory performance and might fall within the 70%-79% range.
D: Represents below-average performance and is often associated with a percentage range of 60%-69%.
F: Indicates unsatisfactory performance and is typically assigned for scores below 60%.
Based on the above grading scale, a score of 913 out of 1000 would most likely correspond to an A letter grade, indicating outstanding achievement.