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 3 of 5.
Raghu said:
8 years ago
Here why we didn't add 500 to the distance, total distance = 500 + 500 = 10000?
Please explain.
Please explain.
Varun sen said:
1 decade ago
Why wouldn't the speed added here when man and train are approaches each other (60+6) = 66 ?
John said:
1 decade ago
How does 60 x 5 m/sec become = 50 m/sec.
18 3
18 3
Hariharan.p(sphari23) said:
9 years ago
Same direction man&train moving = a+b/u-v.
500/63-3*5/18 m/sec.
=> 30 sec.
500/63-3*5/18 m/sec.
=> 30 sec.
Shashank said:
1 decade ago
@Samuel then relative speed gets added up. Its (60+3) instead of (60-3).
Samuel said:
1 decade ago
What if the man was going in the opposite direction of the train?
Raj said:
1 decade ago
Is it same for time taken by the man to cross the train ?
Selva said:
1 decade ago
I wanna know how they calculate the speed of the train?
Muskan said:
6 years ago
I don't know how they calculate the speed of the train.
Shakeena said:
1 decade ago
Both are in same direction. So we have to take 63-3=60.
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