15/60 = 25%
A fraction like 15/60 can show up in everyday life when 15 out of 60 seats are occupied, 15 of 60 survey responses support an idea, or 15 of 60 items are on sale. In each case, that amount represents 25% of the whole.
You can picture 15/60 as one quarter of a group or object. A quick estimate is to imagine dividing the total into four equal parts and noticing that 15 fills one of those parts.
A common mistake is thinking 15/60 means 15% because the numerator is 15. The denominator matters because it tells you the size of the whole, so 15 out of 60 is a quarter rather than 15 out of 100.