| Two goods train each 350 m long are running in opposite directions on parallel tracks. Their speeds are 42 km/h and 30 km/h, respectively. Find the time taken by the slower train to pass the driver of the faster train |
A) 38 s
B) 32 s
C) 39 s
D) 35 s
Correct Answer: D
Solution :
| Relative speeds \[=(42+30)\,km/h\] |
| \[=74\,\,km/h=\left( 72\times \frac{5}{18} \right)=20m/s\] |
| \[\therefore \]Time taken to cross each other \[=\frac{350+350}{20}=35\,\,s\] |
You need to login to perform this action.
You will be redirected in
3 sec
