9/40 = 22.5%
The fraction 9/40, or 22.5%, can show up in everyday situations like a sale discount, a survey result, or the portion of a class that joins a club. For example, if 9 out of 40 students bring lunch from home, that group represents 22.5% of the class.
To picture 9/40 quickly, think of a little less than one-fourth of a whole. Since one-fourth is 25%, 22.5% is just 2.5 percentage points lower, so it is close to—but slightly less than—one quarter.
A common mistake is to confuse 22.5% with 22.5 as a whole number or with 2.25%. The percent sign matters because it means the amount is measured out of 100, while the fraction 9/40 describes the same portion using parts of 40.
