12/30 = 40%
A value of 40% might show up when a store offers a discount, when a team wins four out of ten games, or when you’ve finished part of a project. It’s a way to describe a share that’s less than half but still a sizable amount.
To picture 12/30 quickly, imagine 30 items split into groups of ten: 12 items would be one full group and two more. You can also think of it as a little less than half of the whole.
One common mix-up is treating 40% as if it means 40 out of 30, rather than 40 out of every 100. The fraction 12/30 describes the same share using a different-sized whole.
