21/84 = 25%
A value like 21/84, or 25%, can show up in everyday life when a store takes a quarter off the price of an item. It can also describe things like one out of every four days being rainy.
A quick way to picture 25% is to imagine a shape or group split into four equal parts, with one part shaded or selected. Since 21/84 is a quarter of the whole, it’s a little easier to estimate than a percentage that falls between familiar benchmarks.
One common mix-up is thinking that 25% off means the item costs 25% of its original price. It actually means the discount is a quarter of the original price, so the amount left to pay is 75%.
