I heard following ad on the radio: "We are hiring. If you have a minimum of 18 years you may send your resume to this address".
I know what the ad was trying to communicate (e.g., "people with 18 years or more can send a resume"), but in my opinion, logically and mathematically speaking, when you say "if you have a minimum of 18 years" you are saying that you only accept people with exactly 18 years.
That's because the minimum and maximum values of the age of a person are the exact age of that person. If a person has 20 years, for example, she has a minimum of 20 years. Similarly if a person has 30 years, she has a minimum of 30 years (and a maximum of 30 as well).
My friends don't agree with me, though, and they argue that by saying "if you have a minimum of 18 years" you are saying you want anyone with 18 or more years.
The argument was so heated that we decided to seek help from the experts here on SE.
So which one is right?