20/40 = 50%
A value of 50%, like 20/40, shows up in everyday situations such as a store sale, a phone battery display, or half the questions on a quiz being correct. It’s a way to describe an amount that’s right in the middle of a whole.
To picture 20/40 quickly, imagine a whole pizza cut into two equal halves: the value represents one of those halves. If you’re estimating a chart or a group of items, look for the point halfway between none and all.
A common mix-up is thinking 20/40 means 20% because of the 20 on top. The bottom number matters too: 20 out of 40 is half of the total, not 20 out of 100.