30/90 as a percentage is 33.33%. This is the rounded value you get when you look at how much of a whole 30 is out of 90 parts.
The fraction 30/90 can be simplified by dividing both the numerator and the denominator by their greatest common factor, which is 30. This gives you the simpler fraction 1/3. Even though the numbers are smaller, the meaning stays the same: one part out of three equal parts.
When you think of 33.33%, picture a pie cut into three equal slices and taking one slice. That slice represents roughly a third of the whole pie, which matches the original fraction 30/90. It's a quick way to see the size of the fraction in everyday terms.
