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 6 of 59.
Vikram said:
1 decade ago
Here,The Train speed =60km/1hr & That Train was crosses a one Pole in 9 Seconds.
So,Therefore we are converting Km into Meters And Hour into Seconds.....
i.e.,That train speed=60km/60Minute.
i.e.,that Train Speed=1km/1Minute.
and 1km=1000meters ,1Minute=60seconds.
So,The Train Length = 1Km/1Minute *9.
that means ,Length of Train=(1000/60)*9.
=150 Meters.
So,Therefore we are converting Km into Meters And Hour into Seconds.....
i.e.,That train speed=60km/60Minute.
i.e.,that Train Speed=1km/1Minute.
and 1km=1000meters ,1Minute=60seconds.
So,The Train Length = 1Km/1Minute *9.
that means ,Length of Train=(1000/60)*9.
=150 Meters.
Raja said:
1 decade ago
What is the shortcut method to calculate gcf of numbers?
Thangaraj K. said:
1 decade ago
Answer = sec/speed*1000 (i.e. - multiplied with 1000 to convert to metres )
=9/60*1000 = 150m
=9/60*1000 = 150m
Sai said:
1 decade ago
@SAI
Simply sperb
Simply sperb
Suresh said:
1 decade ago
Imagine the pole as a car moving on the train(road) which has a distance of 150m. If the pole(car) takes 9 sec to complete 150m, then what is the speed?
speed of the pole(car)=150m/9sec
= 16.67ms-1
=16.67*(18/5)km/hr
=60km/hr
speed of the pole(car)=150m/9sec
= 16.67ms-1
=16.67*(18/5)km/hr
=60km/hr
Janeth said:
1 decade ago
@Jayath how about -14x/100. I do not understand. Where did you get the number?
Thaya said:
1 decade ago
@ Kalimuthu
This was a nice Explaination
This was a nice Explaination
Shubham said:
1 decade ago
How did you calculate speed ?.
Gokul said:
1 decade ago
Really nice explanation.
Hitesh said:
1 decade ago
When I saw the explanation I was confused that why these gyes used 5/18 to multiply But now I got it. Thanks!
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