Problem on finding length of train or platform
The problem on trains are important chapter for easily get the marks in competitive exam papers. you just remember the way of train cross the object and speed ,time and distance.There are train based problem based on two object, First is Train and second object is that which is crossed by the train.
Problem on finding length of train or platform
Example 1:
A Express train is running at speed of 90 Km / hr.It crosses a bridge whose length is twice that of train in 36 seconds.What is the length of bridge in metre?
Answer :
At First we convert the speed into 90 Km / hr = 90 x 5/18 = 25 m /sec.
now here is suppose the train length is x so bridge length is 2x.
according to question
25 = x + 2x / 36
x = 300 m .
length of platform is 300 x 2 = 600 m.
So length of bridge is 600 metre.
Example 2:
A express train passess a tunnel in 21 sec whose length is 130 m long moving with speed of 90Km / hr. what is the length of tunnel ?
Answer :
Let length be the x meters.
We know the conversion of Km/hr to m/sec is = 90 x 5 / 18 = 25 m/sec
25 = 130 + x / 21
130 + x = 25 x 21
x = 525 - 130
x = 395
so length be the 395 meters.
If You Have any question regarding this topic then please do comment on below section. You can also send us message on facebook.
The problem on trains are important chapter for easily get the marks in competitive exam papers. you just remember the way of train cross the object and speed ,time and distance.There are train based problem based on two object, First is Train and second object is that which is crossed by the train.
Problem on finding length of train or platform
Example 1:
A Express train is running at speed of 90 Km / hr.It crosses a bridge whose length is twice that of train in 36 seconds.What is the length of bridge in metre?
Answer :
At First we convert the speed into 90 Km / hr = 90 x 5/18 = 25 m /sec.
now here is suppose the train length is x so bridge length is 2x.
according to question
25 = x + 2x / 36
x = 300 m .
length of platform is 300 x 2 = 600 m.
So length of bridge is 600 metre.
Example 2:
A express train passess a tunnel in 21 sec whose length is 130 m long moving with speed of 90Km / hr. what is the length of tunnel ?
Answer :
Let length be the x meters.
We know the conversion of Km/hr to m/sec is = 90 x 5 / 18 = 25 m/sec
25 = 130 + x / 21
130 + x = 25 x 21
x = 525 - 130
x = 395
so length be the 395 meters.
- Problem on time taken by train
- Problem on speed of train
- Problem on running same direction
- Problem on running opposite direction
- << Go back to Problem on Trains main page
If You Have any question regarding this topic then please do comment on below section. You can also send us message on facebook.
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