Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 1)
1.
A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?
Answer: Option
Explanation:
| Speed = |  |
60 x | 5 |  m/sec |
= | |
50 | m/sec. |
| 18 | 3 |
Length of the train = (Speed x Time).
 Length of the train = |
|
50 | x 9 | m = 150 m. |
| 3 |
Discussion:
586 comments Page 5 of 59.
Jayanthi said:
1 decade ago
Lets take mnthy salry to be x;
then ,
x-15x/100+55x/100=12750;
x-14x/20=12750;
6x/20=12750;
x=(12750)20/6
x=42,5000;
monthly salry is Rs.42,500
then ,
x-15x/100+55x/100=12750;
x-14x/20=12750;
6x/20=12750;
x=(12750)20/6
x=42,5000;
monthly salry is Rs.42,500
Edger said:
1 decade ago
60*5/18 = how to calculate this logic, but I'm clear next step --50/3*9=150---guys please explan this.
Hifzur said:
1 decade ago
Its simple no need of going that 5/18 it wil give confusion.
Convert 60 km into meter i.e 60000m.
Now speed is 60000m/hr... convert it into per second.
i.e 60000/(60*60)=16.66
As we know length=(speed*time)
:.16.66*9 = 150.
Convert 60 km into meter i.e 60000m.
Now speed is 60000m/hr... convert it into per second.
i.e 60000/(60*60)=16.66
As we know length=(speed*time)
:.16.66*9 = 150.
Roshan machhi said:
1 decade ago
I understand it but just explain in detail.
Ghanshyam said:
1 decade ago
Nice explanation in detail. Thank you very much.
Sara said:
1 decade ago
Distance = Time *speed
1km =1000Meteres
1hr =3600 seconds
Distance = 60*9/3600 =9/60 km
Distane in Metres =(9/60)*1000 =150M
simple and fast way
1km =1000Meteres
1hr =3600 seconds
Distance = 60*9/3600 =9/60 km
Distane in Metres =(9/60)*1000 =150M
simple and fast way
Fuzail ahmad said:
1 decade ago
Very good to all.
Jayakumar said:
1 decade ago
Jayanthi, Sundar, Kalimuthu Thanks for a lot to YOU all
I can easily understand your problem solving system and it is not only useful to me but also to all thanks thanks thanks thanks thanks
I can easily understand your problem solving system and it is not only useful to me but also to all thanks thanks thanks thanks thanks
Baskar said:
1 decade ago
Any one know the how many feet is one meter? well explanations sundar.
Ajay said:
1 decade ago
Guy's why we multiply (speed x time) to find length.
train is going with 50/3 meter in one second,
suppose this train passes this pole in 1 second then train length would be 50/3 meter. (because 50/3 meter is covered by 1 second)
now suppose this train passes this pole in 2 second then train length would be (50/3)x 2 meter
now here train passes this pole in 9 second so the train length would be (50/3) x 9 = 150 meter
train is going with 50/3 meter in one second,
suppose this train passes this pole in 1 second then train length would be 50/3 meter. (because 50/3 meter is covered by 1 second)
now suppose this train passes this pole in 2 second then train length would be (50/3)x 2 meter
now here train passes this pole in 9 second so the train length would be (50/3) x 9 = 150 meter
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