40/55 as a percentage is 72.73%. This is the rounded value you get when you express the fraction as a part of a hundred.
The fraction 40/55 can be simplified to 8/11, which still represents the same portion of a whole. Whether you write it as 40/55 or 8/11, the size of the part doesn’t change.
In everyday situations, it’s often easier to think in percentages. Saying something is 72.73% complete, or that a test score is 72.73%, gives a quick sense of how much is done compared to the whole.
Remember, the percentage and the fraction are just two ways to describe the same amount, so you can use whichever form fits the context best.
