Answer :
Time = distance / speed
Time = 180,000 meters / 40 m/s
Time = 4,500 seconds
1 minute = 60 seconds:
4,500 seconds / 60 seconds/minute = 75 minutes
1 hour = 60 minutes
75 - 60 = 15
The train traveled for 1 hour and 15 minutes.
Time = distance / speed
Time = 180,000 meters / 40 m/s
Time = 4,500 seconds
1 minute = 60 seconds:
4,500 seconds / 60 seconds/minute = 75 minutes
1 hour = 60 minutes
75 - 60 = 15
The train traveled for 1 hour and 15 minutes.