42/80 as a percentage is 52.50%. This fraction simplifies to a little over half, which is easy to remember when you think of it as a percentage.
The fraction 42/80 can also be reduced to 21/40, but the percentage stays the same. Seeing it as 52.50% helps you compare it quickly with other values, like a test score or a discount.
In everyday terms, 52.50% means you have just over five‑tenths of the whole. If you picture a pie chart, a little more than half of it would be colored in.
Knowing that 42 out of 80 equals 52.50% makes it simple to talk about proportions in school projects, shopping, or any situation where you need a quick, clear comparison.
