To figure out how far the Acela Express traveled in 8 hours, we can use a proportion since we know the distance it traveled in 5 hours.
Let's set up the proportion:
Distance in 5 hours / Time in 5 hours = Distance in 8 hours / Time in 8 hours
Since we know that the Acela Express traveled 775 miles in 5 hours, we can substitute these values into the proportion:
775 miles / 5 hours = Distance in 8 hours / 8 hours
To solve for the unknown distance in 8 hours, we can cross-multiply:
Distance in 8 hours = (775 miles / 5 hours) * 8 hours
Now, we can calculate the distance in 8 hours:
Distance in 8 hours = 775 miles / 5 hours * 8 hours
Distance in 8 hours = 1240 miles
Therefore, the Acela Express traveled 1240 miles in 8 hours.