3/20 as a percentage is 15.00%.
The fraction 3/20 means three parts out of twenty equal parts. In decimal form it is 0.15, which is the same as fifteen hundredths of a whole.
You can see 15.00% in everyday situations, like getting a 15 % discount on a $20 purchase or scoring 15 % on a quiz with 20 questions. It’s a quick way to understand a small portion of a total.