18/48 as a percentage is 37.50%. This means that if you took 18 parts out of a total of 48, you would have about a little more than a third of the whole.
The fraction 18/48 can be reduced to 3/8, which is an easy way to see that it is close to 0.375 in decimal form. When we talk about percentages, we just think of that decimal as parts per hundred.
Knowing the percentage helps when you compare sizes. For example, if you had 48 items and you took 18 of them, you would have taken 37.50% of the total. This makes it simple to understand the share in everyday situations.
