2. The best way to travel from the Swiss town of Thun to the Loeschental Valley by car is to drive to the village of Kandersteg and take the car-train to Goppenstein. Each train carries 70 cars and the
service runs every 12 minutes in each direction. The first trains leave at 05:00. Each train takes 4
minutes to unload and 4 minutes to load. As many as 600 cars queue for these trains at weekends. The
train journey to Goppenstein takes 20 minutes.
Arriving at the Kandersteg queue at 16:55, John is told that there will be 420 cars queuing ahead of him
once the next train has left. The service continues to run without any delays.
At what time will he arrive at Goppenstein station?