The train for station B leaves every two and a half hours from station A. An announcement was made at station A that the train for station B had left 40 minutes ago and the next train will leave at 17.00 hours. At what time was the announcement made?
Show Hint
Always calculate the time intervals based on the given schedule and subtract the time difference from the next scheduled event.
The train leaves every two and a half hours, so the schedule is 14:30, 17:00, and so on.
The announcement stated that the train had left 40 minutes ago, meaning it had left at 16:30.
Thus, the announcement was made at 15:10.
Answer: 15.10 hours