15/18 as a percentage is 83.33%. This number tells you how much of a whole 15 parts out of 18 represent when you look at it as a part of 100.
The fraction 15/18 can be simplified to 5/6, which is still the same portion of a whole. Whether you see it as 5 out of 6 or 15 out of 18, the share stays the same.
Seeing the percentage makes it easy to compare with other numbers. For example, a test score of 83.33% shows you got a little more than four‑fifths of the total points.
In everyday language, you can say that 15/18 is roughly “about eighty‑three percent,” which is a quick way to understand the size of the fraction without doing any math.
