Question

Select the correct sentence.

My forty-year-old aunt has been in twenty-five countries.
My forty year old aunt has been in twenty-five countries.

Answer 1

Correct: "My forty-year-old aunt has been in twenty-five countries."

Reason: When an age is used as a compound adjective before a noun, use hyphens (forty-year-old). Also "twenty-five" is correctly hyphenated when written out. (If the age follows the noun, write "My aunt is forty years old.")