Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 8)
8.
A train 360 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?
Answer: Option
Explanation:
| Formula for converting from km/hr to m/s: X km/hr = |  |
X x | 5 |  |
m/s. |
| 18 |
| Therefore, Speed = | |
45 x | 5 | m/sec |
= | 25 | m/sec. |
| 18 | 2 |
Total distance to be covered = (360 + 140) m = 500 m.
| Formula for finding Time = | |
Distance | |
| Speed |
 Required time = |
|
500 x 2 | sec |
= 40 sec. |
| 25 |
Discussion:
78 comments Page 4 of 8.
Sameena kabir said:
7 years ago
Please, anyone can solve this one I can't understand how to tackle this one?
A train travell 34 km in 54mints. How far a train travell in 60 mints.
A train travell 34 km in 54mints. How far a train travell in 60 mints.
Joydeep mukherjee said:
1 decade ago
There are no starting and end point mentioned in the question.
Whenever, you get this type of question, just.
Total length = 360+140 m = 500 m.
Whenever, you get this type of question, just.
Total length = 360+140 m = 500 m.
Vinod Anand said:
1 decade ago
Total Length of Train and Bridge = 360+140 = 500 Mtr.
And Speed is = 45km/hr.
Than T = 500*18/45*5.
= 200/5.
= 40 sec.
And Speed is = 45km/hr.
Than T = 500*18/45*5.
= 200/5.
= 40 sec.
PANASA HARISH KUMAR said:
9 years ago
Train long = 360m.
Speed 45*5/18 = 12.5m/sec.
Bridge long = 140m.
Time = ?
Speed = Distance/Time
12.5 = 360 + 140/time.
Time = 40sec.
Speed 45*5/18 = 12.5m/sec.
Bridge long = 140m.
Time = ?
Speed = Distance/Time
12.5 = 360 + 140/time.
Time = 40sec.
Ankit Shukla said:
1 decade ago
I think total distance is 360+140+360 = 860 m.
Because the length is started from the starting point to end point of the train.
Because the length is started from the starting point to end point of the train.
Dasari Monica Lucy said:
2 years ago
Given:
Distance of train = 360m,
Speen = 45km/hr,
Distance of bridge = 140m,
45×5/18=12.5
360+140=500
T=D/S =500/12.5.
T= 40.
Distance of train = 360m,
Speen = 45km/hr,
Distance of bridge = 140m,
45×5/18=12.5
360+140=500
T=D/S =500/12.5.
T= 40.
(20)
Sarang said:
7 years ago
Distance = speed *time.
360+140=45*5/18*time,
500=5*5*/2*time,
500=25/2*time,
500=12.5*time,
500/12.5=time,
Time = 40 second.
360+140=45*5/18*time,
500=5*5*/2*time,
500=25/2*time,
500=12.5*time,
500/12.5=time,
Time = 40 second.
Sujith kumar said:
9 years ago
Speed = 45km/hr = 45 * 1000/60 * 60 = 12.5m/ec.
Length = Speed * Time.
360 + 140 = 12.5 * time.
Time = 500/12.5 = 40sec.
Length = Speed * Time.
360 + 140 = 12.5 * time.
Time = 500/12.5 = 40sec.
(1)
Anonymous said:
9 years ago
In this question, the length of the bridge is shorter than that of the train. Then why we go for adding the two lengths?
Rajasekaran said:
2 decades ago
A train 470 m long is running at a speed of 55 km/hr. In what time will it pass a bridge 140 m long?
pls explain it
pls explain it
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