12/30 as a percentage is 40.00%. This is the same as saying that four out of every ten parts are represented by the fraction.
The fraction 12/30 can be reduced to its simplest form, 2/5. Both fractions describe the same proportion of a whole, just expressed in different ways.
Seeing a number like 40.00% helps us quickly understand the size of a part compared to the whole. It’s a handy way to talk about parts of a group, a budget, or any situation where you need a clear, easy‑to‑read figure.
In everyday life you’ll meet percentages all the time—on sale tags, test scores, or statistics. Knowing that 40.00% means roughly two‑fifths of something makes it simple to compare and decide.
