Three engineers and three managers are going to a conference and must travel by train to get there. At the station, the three managers buy their three tickets and watch as the three engineers buy only a single ticket.
"How are three people going to> travel on only one ticket?" asks one manager.
"Just watch and you'll see,"> answers an engineer.
They all board the train and the managers take their seats and watch as all three engineers cram into a restroom and close the door behind them. The train departs and shortly afterward, the conductor comes around collecting tickets. He knocks on the restroom door and says, "ticket, please."
The door opens just a crack and a single arm emerges with a ticket in hand. The conductor> takes it and moves on.
The managers see all this and agreed it is quite a clever idea. So after the conference, the managers decide to copy the engineers on the return trip and save some money. When they get to the station, they buy a single ticket for the return trip. But to their astonishment, the engineers don't buy a ticket at all.
"How are you going to travel without a single ticket?" says one manager.
"Just watch and you'll see," answers an engineer.
They board the train. The three managers cram into a restroom compartment and the three engineers cram into an another one nearby. The train departs.
Shortly afterward, one of the engineers leaves his restroom, walks over to the managers' stall, knocks on the door and says, "ticket, please".