18/30 = 60%
A value like 60% can show up in everyday life when a weather forecast says there’s a chance of rain or a store advertises a discount. It can also describe how much of a class finished an assignment or how full a phone battery is.
To picture it quickly, imagine a group of ten equal parts: about six of them would be shaded. That makes it a little more than half, but not as much as two-thirds.
One common point of confusion is thinking that 60% off means you pay 60% of the original price. It means the discount is 60%, so you pay the remaining part.