15/51 as a percentage is 29.41%. This is the rounded figure you get when you express the fraction as a part of a whole in percent form.
The fraction 15/51 can be simplified to 5/17, but the percentage stays the same. Whether you write it as 15 divided by 51 or 5 over 17, the result is still 29.41% when you convert it to a percent.
Knowing the percent helps when you compare it to other values, like prices or test scores. It tells you that 15 out of every 51 units is a little less than one‑third, which is exactly what 29.41% represents.
