18/90 as a percentage is 20.00%. This fraction represents a small part of a whole, and when expressed in percent form it tells you exactly how many hundredths it equals.
The fraction 18/90 can be reduced to 1/5, which makes it easy to see why the percent is a round number. One fifth of any quantity is always twenty out of one hundred.
In everyday use, you might see this percentage on a discount tag, a test score, or a survey result. It’s a clear way to show a simple proportion.
Remember that 20.00% is the same value as 18 divided by 90, just written in a format that’s quick to compare with other percentages.
