20/40 = 50%
A fraction like 20/40 can show up when 20 out of 40 seats are filled, 20 of 40 questions are answered, or half of a group chooses the same option. In each case, the amount is 50%, or one-half of the total.
To picture 20/40 quickly, imagine a shape, group, or progress bar split into two equal parts. If one part is filled or included, you are looking at about half, so the value is easy to estimate as 50%.
A common mistake is thinking that larger numbers automatically mean a larger amount. The numbers 20 and 40 may look bigger than 1 and 2, but 20/40 still represents the same portion as one-half.
