Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 22)
22.
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.
Answer: Option
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 |
Discussion:
81 comments Page 4 of 9.
Dhiru said:
1 decade ago
But the pole has a length of 500m so it will take additional time to cross. Thats what I think refer example 24 both seem similar guys get clear and help me to.
Karma said:
5 years ago
Won't the driver be facing each other at the start? Hence time taken is 0. They are already facing each other or at the same spot at start of the problem.
(2)
Paul said:
7 years ago
This sum is followed by : t= (a+b)/(u+v).
Where: a is the length of the first train.
b: length of other trains.
u and v are the respective velocity.
Where: a is the length of the first train.
b: length of other trains.
u and v are the respective velocity.
Rohit gupta said:
1 decade ago
Its given that they are running in opposite directions and parallel to each other. And answer is given when they are running in same directions.
Chandana said:
1 decade ago
Driver is starting of the train. If slower train pass the driver of the faster train automatically it pass the total train. Is it right?
B Kapil said:
7 years ago
The right answer will be 24 sec because here it is talking about the time to pass the driver, so the answer will be 24 sec, not 48sec.
Xavi said:
9 years ago
Yes, 24sec is the correct answer.
Because the math required us to find out only the passing time of the driver of the slower train.
Because the math required us to find out only the passing time of the driver of the slower train.
Shyam said:
8 years ago
In the same question, Find the time taken by the faster train to pass the driver of the slower train one so whats the answer?
Rajesh said:
1 decade ago
Well done chandana at first I made same mistake by taking distance 1000m instead of 500.
I have got 15. Anyway, not bad.
I have got 15. Anyway, not bad.
Pinku said:
1 decade ago
If it is 24sec, then time taken by faster train will be also 24.
But how is it possible that both are same. Not getting.
But how is it possible that both are same. Not getting.
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