What is 16/40 as a percentage? It is 40.00%. This tells you that the fraction represents forty percent of a whole.
The fraction 16/40 can be reduced by dividing both the numerator and the denominator by 8, giving 2/5. Seeing it as two parts out of five makes the percentage easy to understand: two out of five is the same as forty out of one hundred.
In everyday use, you might see this percentage on a test score, a discount, or a sports statistic. Knowing that 16/40 equals 40.00% helps you quickly compare it to other numbers that are already expressed as percentages.