The fraction 10/99 is equal to 10.10% when expressed as a percentage (rounded to two decimal places).
This ratio shows up often in problems that involve repeating decimals, because 10/99 can also be written as 0.101010… . Seeing it as a percentage makes it easier to compare with other everyday numbers like sales tax or interest rates.
When you need a quick estimate, remembering that 10/99 is just a little over 10 % can be handy. In reports, charts, or simple calculations, you can safely use 10.10% as the rounded value without losing much accuracy.