Determining your age by how many times you go out to dinner?

[fillmore nyc]

Here's a weird one--How to determine your age by how many times you go out to dinner: pick the amount of times you would like to go out to dinner per week, more than once, less than ten times. Then multiply that number by 2. Next, add 5. Then multiply by 50. Next, if you HAVE had a birthday this year, add 1757. If you have NOT had a birthday yet this year, add 1756. Then subtract the 4 digit number that is the year of your birth. The resulting 3 digit number is... first digit: how many times you want to go out to dinner. second two digits is your current age. Bizzare thing is, that it will only work this year. Strange but true.

[Flames1950]

Weird is right -- but the age was right too.

[basisfunction]

There is nothing remotely weird about this. Reduce this equation a little bit and you have this:

100*[number times eating out] + 2007 - [birth year].

They demand that your eating out number is between 1 and 10, but anything would work.
Keeping it between 1 and 10 makes a nice three digit number though which must make things more, 'mysterious'. The factor of 100 puts any number chosen in the hundreds place and therefore ready to get your age via addition. The 2007 minus your birth gives our age as a two digit number for almost all of us. And there you go use 2008 for next year.