40/80 = 50%
A value of 50% shows up in everyday life when a store offers half off or a game is halfway finished. It can also describe a survey where half the people chose one option.
To picture 50%, imagine a pizza cut into two equal pieces and one piece set aside. It’s also about the same as filling a glass halfway.
A common point of confusion is thinking that 50% always means 50 items. It means half of the total, so the number of items depends on how many there are to begin with.
