Ninety (numeral)

The number equal to nine times ten, represented in Roman numerals as XC.

Origin:

From middle english ninety, ninti, from old english nigontig, from proto-germanic *niwuntehun.

Examples:

1. My grandmother lived to be ninety years old.
2. The temperature reached ninety degrees Fahrenheit.
3. The hotel room costs ninety dollars per night.
4. Ninety percent of the population has access to clean drinking water.
5. The highway speed limit is ninety kilometers per hour.