17/85 = 20%
A value like 17/85, or 20%, can show up in everyday situations such as a store discount, a survey result, or a battery level. For example, if 20% of customers choose one option, that means about one out of every five customers picked it.
You can picture 20% quickly as one-fifth of a whole. Imagine dividing a group of 85 items into five equal sections and thinking of 17 items as one section, or picture 20 shaded squares in a grid of 100.
A common mistake is thinking that 17/85 means 17%, because people may focus on the numerator and overlook the denominator. The denominator shows the size of the whole group, so the fraction describes a portion of the entire amount, not just the top number.