This takes less than a minute. Work it out as you read, either in your head or on a piece of paper. But be sure you don‘t read the bottom until you‘ve worked it out!

- First of all, pick the number of times a week that you would like to go out to eat (more than once but less than 10 times)
- Multiply this number by 2 (just to be bold)
- Add 5
- Multiply it by 50
- If you have already had your birthday this year add 1758 ... If you haven‘t, add 1757.
- Now subtract the four digit year that you were born.

You should now have a three digit number. The first digit of this was your original number, (i.e., how many times you want to go out to restaurants in a week).

The next two numbers are:

YOUR AGE! (Oh YES, it is!)

This is the only year (2008) the calculation will ever work, so you have less than nine months to spread this around.