40/65 as a percentage is 61.54%. This number tells you how much of a whole 40 parts out of 65 represent when you look at it in terms of hundredths.
The fraction 40/65 can be simplified to 8/13, but the percentage stays the same. Seeing the value as a percent makes it easy to compare with other numbers that are already in percent form.
In everyday situations, you might use this percentage to understand scores, discounts, or any scenario where a part of a whole is expressed out of 100. For example, if you answered 40 out of 65 questions correctly, you scored 61.54% on the test.
