3/30 = 10%
A value like 3/30, or 10%, can show up in everyday life when a store offers a discount or a survey finds that a small share of people prefer a certain option. It can also describe something like 3 out of 30 students choosing the same lunch.
To picture it quickly, imagine 30 equal items grouped into 10 sets of 3: one set is the amount you’re looking at. You can also think of it as about one item in every ten.
A common mix-up is to think that 3/30 is 3%, because the numerator is 3. The whole group matters too, so the same 3 items would represent a different share if there were more or fewer items overall.