A train traveled a distance of 270 km in 45 minutes at what speed did it travel?

The speed of the train can be calculated using the formula:

speed = distance / time

In this case, the distance is 270 km and the time is 45 minutes. However, the units need to be consistent, so we must convert the time to hours:

45 minutes = 45/60 = 0.75 hours

Now we can plug in the numbers:

speed = 270 km / 0.75 hours

speed = 360 km/h

Therefore, the train traveled at a speed of 360 km/h.