18/42 as a percentage is 42.86%. This is the same as saying that the fraction represents just under half of a whole. The value is rounded to two decimal places for easy reading.
The fraction 18/42 can be reduced by dividing both numbers by their greatest common divisor, 6. This gives the simpler form 3/7, which still represents the same portion of a whole. Seeing the fraction in its lowest terms often helps when comparing it to other numbers.
In everyday situations, you might encounter 42.86% when looking at parts of a group, like 42.86% of a class voting for a particular option, or when measuring a portion of a recipe. Knowing the percentage lets you quickly understand the size of the part without having to work with the fraction directly.
