Aptitude - Problems on Trains - Discussion

Discussion Forum : Problems on Trains - General Questions (Q.No. 2)
2.
A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is:
45 km/hr
50 km/hr
54 km/hr
55 km/hr
Answer: Option
Explanation:

Speed of the train relative to man = 125 m/sec
10

   = 25 m/sec.
2

   = 25 x 18 km/hr
2 5

   = 45 km/hr.

Let the speed of the train be x km/hr. Then, relative speed = (x - 5) km/hr.

x - 5 = 45         x = 50 km/hr.

Discussion:
487 comments Page 39 of 49.

Ganesh said:   8 years ago
Anyone please explain about relative speed.

Priyanka devi said:   4 years ago
@Rahul.

Great work, Thanks for explaining.
(7)

CHAKIT said:   2 decades ago
x - 5 = 45
x= 45+5
x = 50 km/hr.

Sravani said:   1 decade ago
Why relative speed? They asked only speed?

Sunil said:   9 years ago
Thank you all for the given explanations.

Saikat Dey said:   9 years ago
Thanks to all for such nice explanations.

Kavya said:   6 years ago
Why it is divided 125/10? Please explain.

Shanthi said:   2 years ago
How this 18/5 come? please explain to me.
(17)

Phanikumar said:   1 year ago
How it comes 18/5? Anyone, explain to me.
(36)

P. Sudha said:   7 years ago
How 18/5 possible? Please explain to me.


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