21/40 as a percentage is 52.50%. This means the fraction is a little over one‑half when you look at it on a scale of 100.
The fraction 21/40 is a simple ratio that can be reduced to a decimal of 0.525. Seeing it as a percentage helps you compare it quickly with other numbers, like scores or discounts.
In everyday life, you might meet this kind of figure when calculating a part of a whole—like a 52.50% chance of rain or a 52.50% share of a pizza. It’s a handy way to understand the size of a portion.
Remember, 52.50% is just another way to show the same value that 21/40 represents, making it easier to communicate and work with in many situations.
