question: You are driving a train.   The train leaves at 55km an hour heading for Halifax from Calgary.   The tracks of the train move diagonally.   There are 18 passengers on the train ranging from 3 years old to 80 years old.   The train tickets were 10 dollars apiece.   If the train made a stop at Vancouver and 1/3 of the passengers got off, what's the age of the driver?
choices.label: A B C D E
choices.text: passenger train place coach you are the driver straphanger