Final answer:
It will take 3.25 hours for a train traveling at an average speed of 140 mph to cover a distance of 455 miles.
Step-by-step explanation:
To determine how long it will take for a high-speed train to travel a specific distance, we can use the formula time = distance ÷ speed. Since we know the train averages 140 mph and needs to travel 455 miles, we can calculate the time required for the trip.
Using the formula:
- Time = Distance ÷ Speed
- Time = 455 miles ÷ 140 mph
- Time = 3.25 hours
So, it will take 3.25 hours for the train to travel 455 miles at an average speed of 140 mph.