Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 15)
15.
A train 110 metres long is running with a speed of 60 kmph. In what time will it pass a man who is running at 6 kmph in the direction opposite to that in which the train is going?
Answer: Option
Explanation:
Speed of train relative to man = (60 + 6) km/hr = 66 km/hr.
| = |  |
66 x | 5 |  m/sec |
| 18 |
| = | |
55 | m/sec. |
| 3 |
 Time taken to pass the man = |
|
110 x | 3 | sec = 6 sec. |
| 55 |
Discussion:
35 comments Page 3 of 4.
Sarah said:
1 decade ago
@mini:
Nice explanation friend.
Nice explanation friend.
Samir said:
9 years ago
66 * 5/18,
So
66/6 =11,
18/6 = 3,
11* 5 = 55.
Hence 55/3.
So
66/6 =11,
18/6 = 3,
11* 5 = 55.
Hence 55/3.
Shivani said:
1 decade ago
Here is solution in simple way:.
As we know speed will add in case of opp direction so,
Speed= (60+6) =66km/h.
66*5/18=55/3m/sec (for change km/h into m/sec).
Length=110m.
Distance=s*t.
110=55/3*t.
Hence.
t=330/55=6sec.
As we know speed will add in case of opp direction so,
Speed= (60+6) =66km/h.
66*5/18=55/3m/sec (for change km/h into m/sec).
Length=110m.
Distance=s*t.
110=55/3*t.
Hence.
t=330/55=6sec.
Shashi said:
1 decade ago
Hai friends please can you provide some formulas which are related to these problems.
Rahul raj said:
9 years ago
Because train are moving across the man.
The man is not considered as pole so only train distance is total distance.
The man is not considered as pole so only train distance is total distance.
Koyal said:
9 years ago
Moving in the same direction that's why 60 + 6 = 66
Speed = 66 * 5/18 = 55/3.
Time = 110/(55/3).
= 110 * 3/55.
= 6 sec.
Speed = 66 * 5/18 = 55/3.
Time = 110/(55/3).
= 110 * 3/55.
= 6 sec.
Faizal said:
9 years ago
The speed can be added only if the two objects moving in opposite directions and if same direction then it should be subtracted.
Sanidhya said:
9 years ago
Hi all.
Here we have considered the distance taken by train coming in opposite direction in almost all the problems. So here why we have not considered the distance taken by man.
Here we have considered the distance taken by train coming in opposite direction in almost all the problems. So here why we have not considered the distance taken by man.
Thili said:
1 decade ago
To pass the man train should go distance of train and the which was ran by the man.
Then why don't you care about the distance of man run. Train should go that distance also to pass the train.
Then why don't you care about the distance of man run. Train should go that distance also to pass the train.
Salman said:
10 years ago
Both the man and train moving in opposite to each other so while the train crosses man, man will also move some distance so total distance travel by train will be different not only its own length.
Hence the answer is 6.6 sec.
Hence the answer is 6.6 sec.
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