### Question: Two trains are running in opposite direction with the same speed. If the length of each train is 320 meters and they cross each other in 18 seconds, then what is the speed of each train?

- 64 km/hr
- 56 km/hr
- 72 km/hr
- 48 km/hr

Answer: 1. 64 km/hr

Solution:

Total distance covered by train =320 meters

total time taken= 18 second

speed of train(m/s)=640/18

speed of trains (km/hr)= 640/18 x (18/5)=64 km/hr