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:
587 comments Page 51 of 59.
Naresh Thummala said:
1 decade ago
Distance = Speed x time.
Length = (60 x 5/18) x 9.
= 150 MTRS.
Length = (60 x 5/18) x 9.
= 150 MTRS.
Agni said:
1 decade ago
Easy method.
60 km per hr.
1hr = 60 mins.
That means.
Per km = 60km/60mins = 1.
Per km 1 min.
Per km = 1000 meters.
Per min = 60 sec.
Train is running per second = 1000/60 = 16.666 mtrs.
Cross the pole in 9 second = 16.666*9 = 150 mtrs.
60 km per hr.
1hr = 60 mins.
That means.
Per km = 60km/60mins = 1.
Per km 1 min.
Per km = 1000 meters.
Per min = 60 sec.
Train is running per second = 1000/60 = 16.666 mtrs.
Cross the pole in 9 second = 16.666*9 = 150 mtrs.
Utpalkant said:
1 decade ago
To calculate% = (total obtain/total)*100.
Anbu said:
1 decade ago
How to calculate percentage(%) in marketing?
Ranjeet_Great said:
1 decade ago
@Udai.
Its very easy to convert m/sec in to km/hour,
Just multiply 18/5.
For example if we want to convert 5meter/sec in to km/sec then we will convert meter into km and sec in to hour.
That is 5meter=(5/1000)km and 1sec=(1/3600)hour.
So 5m/sec={(5/1000)/(1/3600)} km/hour.
or (5*3600)/(1*1000) km/hour
or (5*36)/(10) km /hour
or (5*18)/(5) km/hour
or 5 km/hour.
Its very easy to convert m/sec in to km/hour,
Just multiply 18/5.
For example if we want to convert 5meter/sec in to km/sec then we will convert meter into km and sec in to hour.
That is 5meter=(5/1000)km and 1sec=(1/3600)hour.
So 5m/sec={(5/1000)/(1/3600)} km/hour.
or (5*3600)/(1*1000) km/hour
or (5*36)/(10) km /hour
or (5*18)/(5) km/hour
or 5 km/hour.
Hari prasath said:
1 decade ago
How to convert feet into meter?
Udai said:
1 decade ago
How to convert m/sec in to km/hour?
SANTOSH, aps, goregaon said:
1 decade ago
Total exp= 15%+55%= 70%
Let salary rs.100
Save= 100-70= Rs.30%
Rs.30%= 12750.
100% = 12750/30x100=42500.
Let salary rs.100
Save= 100-70= Rs.30%
Rs.30%= 12750.
100% = 12750/30x100=42500.
Rasu said:
1 decade ago
Speed convert km/h to m/sec speed=[60*5/18]m/sec
speed=[50/3]m/sec.
Distance=[speed*time]
Length of the train=[50/3*9]
=150m.
speed=[50/3]m/sec.
Distance=[speed*time]
Length of the train=[50/3*9]
=150m.
Raj said:
1 decade ago
Speed = [60*5/18]m/sec=50/3 m/sec.
50/3*9 = 150mtrs.
50/3*9 = 150mtrs.
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