In a location where the train tracks run parallel to a road, a high speed train traveling at 60 m/s passes a car traveling at 30 m/s. How long does it take for the train to be 180 m ahead of the car?
1) 2.0 s
2) 3.0 s
3) 6.0 s
4) 9.0 s
5) 18.0 s
Answer: 3