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.
12 sec
24 sec
48 sec
60 sec
Answer: Option
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

Discussion:
81 comments Page 7 of 9.

Sujee said:   4 years ago
Why do we take 500 instead of 1000?

Please anyone explain me.
(1)

Jay said:   6 years ago
500 should be the initial distance between two trains.

Raju said:   8 years ago
How 125÷6 came in this problem? Please explain.

Kineg said:   7 years ago
Can anyone explain to me how the distance came 500?

Ruturaj said:   6 years ago
Not getting this, Please anyone explain it clearly.

Manish said:   9 years ago
I am not getting understand where we got 5/18.

Nana said:   1 decade ago
Why was the speeds added instead subtracting?

Baseer said:   1 decade ago
5/18 came from? Can some one tell me please.

Ankit gohel said:   6 years ago
If speed equals then what? Please tell me.

Reho Rex said:   6 years ago
This is the trick part of question no.14.


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