Two trains leave a railway station at the same time. The first train travels due west and the second train due north. The first train travels at a speed of 20 km/hr and the second train travels at 30 km/hr. After 2 hours, what is the distance between them?
Answers & Comments
(the train which goes north is train 2 and the train which goes west is 1)
Speed of train 1 = 20km/hr
Speed of train 2 = 30km/hr
Distance of train station from train 1 = 20x2
=40km
Distance of train station from train 2 = 30x2
=60km
Distance between the two trains = 60-40
=20km