Just move the decimal point over one for 10%. Double that to tip 20%, estimate between the two for rates inbetween. ;-)
(blinks)
(looks at it again)
Seriously?! Well crap. You know I sat there and figured for 20%.
I knew to move it over for 10%, that was easy. It absolutely never occurred to me to just double the 10% value to get 20%.
(sigh) LOL.
Thanks SD, that is the best practical advice I have ever received on tip figuring.
You have a good night, I think I hear a nice, uncomplicated book calling my name. :-)
And thanks again for the tip, I'm going to Vegas on Tuesday so this will help me tremendously.