21/42 expressed as a percentage is 50.00%. This shows that the fraction represents exactly half of a whole when turned into a percent.
The fraction 21/42 can be reduced to 1/2, which is the simplest form. Because 1/2 means one part out of two equal parts, it always corresponds to 50 percent of something.
Seeing the percentage makes it easy to compare with other numbers. For example, if you have a pizza cut into 42 slices and you eat 21, you’ve eaten half of the pizza, or 50.00% of it.
In everyday language, saying something is 50 % is just a quick way to say it’s half. The fraction and its percentage tell the same story in two different formats.
