58.
|
Two goods train each 500 m long, are running in opposite directions on parallel tracks. Their speeds are 45 km/hr and 30 km/hr respectively. Find the time taken by the slower train to pass the driver of the faster one.
|
A.
|
12 sec
|
B.
|
24 sec
|
C.
|
48 sec
|
D.
|
60 sec
|
|
Answer: Option B
Explanation:
Relative speed =
|
= (45 + 30) km/hr
|
|
|
|
|
We have to find the time taken by the slower train to pass the DRIVER of the faster train and not the complete train.
So, distance covered = Length of the slower train.
Therefore, Distance covered = 500 m.
Required time =
|
|
500 x
|
6
|
|
= 24 sec.
|
125
|
