20/40 as a percentage is 50.00%. This means that the fraction 20 out of 40 represents half of a whole, and when we express that as a percent it comes out to exactly fifty percent, shown here to two decimal places.
The fraction 20/40 can be reduced to 1/2, which is a common way to think about splitting something into two equal parts. Whether you’re sharing a pizza, dividing a budget, or looking at a test score, a 1/2 portion always equals 50 percent of the total.
Reporting the result as 50.00% keeps the format consistent and clear, especially when you need the number to line up with other percentages that are also shown with two decimal places. It’s a simple, precise way to communicate that half of anything is represented by the same value.
