How much do you tip at a restaurant?

[PPHSfan]

I give 20% rounded up to the next dollar and always pay in cash, providing the service was good. I give fifteen for mediocre service, but it's very seldom this happens. I seem to get lucky with good service everywhere I go.

[Yoe_09]

Generally if two people around 7.50 per I usually tip 3 dollars or 20 percent. With 3 or 4 it is usually 4 or 5 depending.