(your age/2)+7

hahaha. bwwhat? fine idea but how did you create this equation?

Common knowledge.

how is that common knowledge? i have never heard of it before.

http://www.urbandictionary.com/define.php?term=half-your-age-plus-seven

wow, i've never heard this rule before (that I can remember, anyway) my general rule was 19 and under - 2 yrs plus or minus 20 - 23 - 3 years plus or minus 24 - 28 - 5 years plus or minus ...

28 - 33 - 10 years minus no plus

I didn't know there was a mathematical equation for dating.