30/40 as a percentage is 75.00%. This number comes from the fraction that can be reduced to 3/4, which is a common way to see three parts out of four. When you write it as a percent, you get a tidy, round figure.
The fraction 30/40 is easy to work with because both the numerator and denominator are divisible by 10. Dividing each by 10 gives you 3/4, a simple fraction that appears often in everyday situations, like cutting a pizza into four slices and taking three of them.
Knowing that 75.00% represents three‑quarters helps you compare it to other percentages quickly. It’s higher than 50% but lower than 100%, making it a useful benchmark for things like test scores, discounts, or progress bars.
