20/25 = 80%
A value like 20/25, or 80%, can show up in everyday life when you finish 20 questions out of a 25-question quiz. It could also describe having 20 seats filled in a 25-seat room or completing most of a task.
To picture 20/25 quickly, imagine a group divided into five equal parts, with four of those parts filled or shaded. It is a little less than the whole, leaving about one-fifth empty.
A common mistake is thinking 80% means 80 out of 100 separate items in every situation. It really describes the same proportion, so the total number of items can be different.
