Originally Posted by
JayhawkCO
1st table: party of two (probably business colleagues) $55 tab, $9 tip
2nd table: party of three (three businessmen) $127 tab, $25 tip
3rd table: party of two (couple) $44 tab, $8 tip
4th table: party of three (family) $78 tab, $15 tip
5th table: party of two (business colleagues) $70 tab, $20 tip
6th table: party of nine (business group) $320 tab, $55 auto-gratuity, no extra tip
(As an interesting side note and back to the original topic at hand, the auto-gratuity was the worst tip percentage-wise I had tonight. 
)
Chris
$9/$55 = 16.36%
$55/$320 = 17.19%
The side note would be even more interesting if it were true!
Another side note: it appears the 18% auto-gratuity is on the pre-tax amount, not the after-tax amount. I agree with this methodology of calculating the tip. After-tax tipping is yet another step in the upward spiral of tip inflation. I suspect all servers who buy-in to this method are voting for Huckabee and the FairTax (30% national sales tax)!