280/80=3.5 hrs
There are some missing facts. First which direction are the trains going. When did they leave.
It would take a train going 35 miles per hour approximately 2 hours and 51 minutes to travel 100 miles assuming the constant speed of 35 miles was kept.
54 miles per hour.
How long it takes to go 140 miles depends on your speed. If you are in an airplane going 560 miles an hour, it takes 15 minutes. If you are on a fast train in China going 280 miles an hour it takes 30 minutes. If you are on a fast train in France going 140 miles an hour it takes 1 hour. If you are on an interstate highway going 70 miles an hour, it takes 2 hours. If you are driving on a two lane road averaging 35 miles an hour it takes 4 hours. And if your are in New York traffic and dodging pot holes while averaging 17 1/2 miles an hour it takes 8 hours.
4 minutes is 1/15 of an hour. In one hour, the train would travel 30 miles. Multiply that by 1/15 to get 2 miles in 4 minutes.
Divide 496 by 8. That will give you the speed in miles per hour.
Answer 7.5 miles an hour should do it. 7.5 miles an hour
about 39 hours with no stopping
The train's average speed was 34.5 miles per hour.
80 miles per hour
To cover 4000 metres in 125 seconds the train would be travelling at 71.58 miles an hour. This is the speed over the whole measured distance and not from a standing start
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