Average Speed - calculate average speed of train

[Guest]

A sightseeing train leaves Town A for Town B.

Distance- 26 miles round trip.

10:00 AM- Departs town A.

11:00 AM- Arrives at town B and has a 2 hr. layover.

1:00 PM- Departs town B.

2:00 PM- Arrives at town A.

Calculate average speed of train.

[Guest]

13

[Guest]

I know formula rate * time = distance is used.

How is "average" speed calculated?

[Guest]

Average speed over a distance is the distance travelled (miles) divided by the time taken (hours) to travel that distance

[Guest]

Speed is rate....miles per hour = miles divided by hours

distance is rate x time .....miles = rate x time = speed x time.

Speed or rate may not be constant...Stop signs...give way signs.

Average speed is total distance / total time travelling excluding the time stopped for breaks but includes the time to stop or give way at traffic signs while driving.

[Guest]

Thanks.