20/80 = 25%
A value like 20/80, or 25%, shows up in everyday life when one-fourth of something is involved. For example, a store might offer 25% off a jacket, or 20 out of 80 students might choose the same after-school activity.
You can picture 25% quickly as one out of every four equal parts. If a pizza is divided into four equal slices, 25% is one slice, so 20/80 represents about a quarter of the whole.
A common mistake is thinking 25% means 25 out of 100 items must be present. Percentages describe a portion of a whole, so 20 out of 80 and 25 out of 100 can represent the same share even though the numbers are different.
