human
A train travels 360 miles in 3 hours. At the same rate, how many additional hours would it take to travel an additional 240 miles?
assistant
How fast is the train travelling? ** The rate is 360/3=<<360/3=120>>120 mph.
How long would it take to travel another 240 miles? ** Then it would take 240/120=<<240/120=2>>2 additional hours.
#### 2