Lessons

General Aptitude
1.1 Problems on Trains - General Questions

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Q.

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.

View Answer

Correct choice: B

Explanation:

Relative speed = = (45 + 30) km/hr
 
= ( 75 x 5 ( m/sec
18
 
= ( 125 ( m/sec.
6

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.

Therefore Required time = ( 500 x 6 ( = 24 sec.
125
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