10/25 as a percentage is 40.00%. This means that the fraction represents forty percent of a whole. When you see 40.00%, you can think of it as four parts out of ten equal sections.
The fraction 10/25 can be simplified to 2/5, which is easier to picture. If you split something into five equal pieces and take two of them, you have exactly the same amount as 10 out of 25 pieces. Both ways lead to the same 40 % value.
In everyday use, 40.00% shows up in things like discounts, test scores, and statistics. It’s a handy number to recognize, because it tells you that a little less than half of something is being considered.