The fraction 18/21 expressed as a percentage is 85.71%. This tells you that 18 out of 21 parts make up about eighty‑five percent of the whole. In simplest form the fraction reduces to 6⁄7, which is the same value.
Seeing a percentage like this helps when you compare amounts. For example, if a class has 21 students and 18 of them passed a test, you can say that 85.71% of the class succeeded. It’s a quick way to understand the proportion without dealing with fractions.
Percentages are useful in everyday situations—budgeting, sports stats, or grading. Knowing that 18⁄21 is the same as 85.71% lets you communicate the idea clearly, whether you’re writing a report or just explaining something to a friend.
