Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 21)
21.
How many seconds will a 500 metre long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?
Answer: Option
Explanation:
| Speed of the train relative to man | = (63 - 3) km/hr | |||||||
| = 60 km/hr | ||||||||
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 Time taken to pass the man |
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| = 30 sec. |
Discussion:
44 comments Page 5 of 5.
Megha said:
1 decade ago
Why we do this (63-3) instead of (63+3) ?
Jelli said:
1 decade ago
here the prob is to find the time=?
wkt
z=(a+b)/(u-v)
here a=500,b=0(bcz it's man,pole=0),u=60kmph,v=3kmph
then z=30sec
wkt
z=(a+b)/(u-v)
here a=500,b=0(bcz it's man,pole=0),u=60kmph,v=3kmph
then z=30sec
Varun sen said:
1 decade ago
Why wouldn't the speed added here when man and train are approaches each other (60+6) = 66 ?
Selva said:
1 decade ago
I wanna know how they calculate the speed of the train?
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