22/55 = 40%
A value like 22/55, or 40%, might describe how many students in a class prefer a certain lunch or how much of a phone battery has been used. It’s a handy way to talk about a share of a group or amount.
To picture 40% quickly, imagine 4 out of 10 equal parts shaded. It’s a little less than half, so you can estimate it as close to—but not quite—50%.
A common mix-up is thinking that 40% means 40 out of any group, no matter its size. It means 40 out of 100, or the same share of a group with a different total.