Clearly most English Bibles say Noah was 600 years old when the water landed. Gen 7:6.
It’s intriguing that one Bible in English differs quite a bit from others, if only in the words written. That is the Young Literal Translation Gen 7:6:
and Noah is a son of six hundred years, and the deluge of waters hath been upon the earth
Did original Scripture say Noah was a "son" of 600 years when the water landed? That could cause a big difference in time yet explain a math concern. Did it have the words “hath been” also?