With the premise ' Most menu prices include taxes and a service charge, but it's customary to leave a tip if you were served satisfactorily.', is 'Prices on the menu include taxes, but customers decide whether or not to tip.' a reasonable conclusion?
 Most menu prices include taxes and a service charge, but it's customary to leave a tip if you were served satisfactorily.###Prices on the menu include taxes, but customers decide whether or not to tip.