15/40 as a percentage is 37.50%. This number shows how much of a whole the fraction represents when expressed in hundredths.
The fraction 15/40 can be reduced to its simplest form, 3/8, which is easier to work with in many calculations. Even though it looks different, it still equals the same 37.50% when turned into a percentage.
Knowing the percentage helps you compare this value to other numbers, like test scores or discounts, without having to keep the fraction in mind. It’s a quick way to see that 15/40 is a little more than one‑third of the whole.
