The train departs from station A and arrives at station B on the same day at 15h 20min.

The train departs from station A and arrives at station B on the same day at 15h 20min. At what time does the train leave from station A if the journey from A to B takes 6 hours 48 minutes?

To solve this task, let’s translate hours into minutes. 1 hour = 60 minutes.
15 hours 20 minutes = 15 * 60 + 20 = 900 + 20 = 920 minutes.
Let’s calculate how many minutes the journey takes.
6 hours 48 minutes = 6 * 60 + 48 = 360 + 48 = 408 minutes.
920 – 408 = 512 minutes.
Let’s calculate at what time the train leaves from station A.
512/60 = 8 hours 32 minutes.
Answer: 8 hours 32 minutes.