Problem on speed of train


Problem on speed taken by train

Shortcut Tricks are very important things in competitive exam. Time takes a huge part in competitive exams. If you know how to manage time then you will surely do great in your exam. Most of us miss that part. We provide examples on Speed of train shortcut tricks here in this page below. These shortcut tricks cover all sorts of tricks on Speed of train. We request all visitors to read all examples carefully. You can understand shortcut tricks on Speed of train by these examples.

First of all do a practice set on math of any exam. Write down twenty math problems related to this topic on a page. Using basic math formula do first ten maths of that page. You also need to keep track of the time. After finish write down total time taken by you to solve those ten maths. Now practice our shortcut tricks on speed of train and read examples carefully. After doing this go back to the remaining ten questions and solve those using shortcut methods. Again keep track of Timing. You will surely see the improvement in your timing this time. But this is not all you want. If you need to improve your timing more then you need to practice more.

We all know that the most important thing in competitive exams is Mathematics. That doesn’t mean that other topics are less important. You can get a good score only if you get a good score in math section. You can get good score only by practicing more and more. The only thing you need to do is to do your math problems correctly and within time, and only shortcut tricks can give you that success. Again it does not mean that you can’t do maths without using shortcut tricks. You may have that potential that you may do maths within time without using any shortcut tricks. But so many people can’t do this. Here we prepared speed of train shortcut tricks for those people. Here in this page we try to put all types of shortcut tricks on Speed of train. But it possible we miss any. We appreciate if you share that with us. Your little help will help so many needy.

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, Here we learn the problem on speed taken by train pass a pole, a man or light lamp or platform bridge. First is Train and second object is that which is crossed by the train.

 

 


Example #1
A 270 meters long train passes a bridge of thrice of it’s length, in 30 seconds. Find the speed of the train in km/hr.

  1. 101.5 km/hr
  2. 114.6 km/hr
  3. 122.7 km/hr
  4. 129.6 km/hr

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Answer: Option (D)
How to Solve
270 x 3 + 270 / 30
= 1080 / 30
= 36 m/sec.

36 x 18 / 5 = 129.6 km/hr.

Rough Workspace

Example #2
A 720 meters long train crosses a man in 60 seconds. What would be the speed of the train?

  1. 12 m/sec
  2. 13 m/sec
  3. 14 m/sec
  4. 15 m/sec

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Answer: Option (A)
How to Solve
Speed = Distance / Time
Speed = 720 / 60
Speed = 12 m/sec.
Rough Workspace

Example #3
A super fast train of 140 meter long crossing a long tunnel of 450 meter in 20 seconds. What would be the speed of the train?

  1. 25.6 m/sec
  2. 29.5 m/sec
  3. 35.7 m/sec
  4. 38.9 m/sec

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Answer: Option (B)
How to Solve
Speed = Distance 1 + Distance 2 / Time
Speed = ( 140 + 450 ) / 20
Speed = 590 / 20
Speed = 29.5 m/sec.
Rough Workspace

Example #4
A local train of 150 meter long passes a boy, running at speed of 3 km/hr in the same direction, in 10 seconds.
What would be the speed of the train?

  1. 45 km/hr
  2. 52 km/hr
  3. 57 km/hr
  4. 60 km/hr

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Answer: Option (C)
How to Solve
Speed of the train relative to man
= 150 / 10
= 15 m/sec.

Convert meters to km
= 15 x 18 / 5
= 54 km/hr.

Let, the speed of the train be X km/hr.
So, X – 3 = 54
X = 57 km/hr.

Rough Workspace

Example #5
A jet plane covers a certain distance at a speed of 275 km/hr in 5 hours. To cover the same distance in 7 / 3 hours, at what speed it should travel of?

  1. 555.7 km/hr
  2. 567.7 km/hr
  3. 578.4 km/hr
  4. 589.2 km/hr

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Answer: Option (D)
How to Solve
Speed of the jet plane is 275 km/hr.
So, Distance = ( 275 x 5 ) = 1375 km.

We know that,
Speed = Distance / Time
So, Speed = 1375 x 3 / 7
= 4125 / 7
= 589.2 km/hr.

Rough Workspace

Example #6
A bus passes a distance of 750 km in 15 hours. What would be speed of the bus?

  1. 50 km/hr
  2. 55 km/hr
  3. 60 km/hr
  4. 65 km/hr

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Answer: Option (A)
How to Solve
Speed = Distance / Time
Speed = 725 / 15
= 50 km/hr.
Rough Workspace

Example #7
A 150 meter long train takes 30 seconds to cross a man standing on a platform. What would be the speed the of train?

  1. 4 m/sec
  2. 5 m/sec
  3. 7 m/sec
  4. 9 m/sec

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Answer: Option (B)
How to Solve
Distance = 150 meter.
Time = 30 Seconds.

We know that,
Speed = Distance / Time
Speed = ( 150 / 30 ) m/sec
= 5 m/sec.

Rough Workspace

Example #8
A 320 meter long mail train, whose average speed was 90 km/hr, passes a platform in 40 seconds. A boy passes the same platform in 5 minutes. Find the speed of the boy in meter/sec.

  1. 2.27 m/sec
  2. 2.96 m/sec
  3. 3.03 m/sec
  4. 3.49 m/sec

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Answer: Option (A)
How to Solve
At first we convert km/hr to m/sec
= 90 x 5 / 18
= 25 m/sec.

Let, the size of the platform is X. So,
25 = 320 + X / 40
X = 1000 – 320
X = 680 meter.

5 minute = 5 x 60 = 300 seconds.
So, Speed of boy is:
680 / 300
= 2.27 m/sec.

Rough Workspace

Example #9
A slow local train, whose length is 150 meter, crosses a bridge, whose length is 550 meter, in 50 seconds. What is the speed of the train?

  1. 11 m/sec
  2. 14 m/sec
  3. 18 m/sec
  4. 21 m/sec

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Answer: Option (B)
How to Solve
At first we add the length of both the train and the bridge, i,e,
150 + 550
= 700 meter.

We know that,
Speed = Distance / Time
Speed = 700 / 50
Speed = 14 m/sec.

Rough Workspace

Example #10
A train of 165 meters long crosses a electric post in 5 seconds. The speed of the trains in km/hr is?

  1. 100.2 km/hr
  2. 108.4 km/hr
  3. 113.7 km/hr
  4. 118.8 km/hr

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Answer: Option (D)
How to Solve
Distance = 165 meter.
Time = 5 seconds.

We know that,
Speed = Distance / Time
So, Speed = ( 165 / 5 ) m/sec
= 33 m/sec.

Convert m/sec into km/hr
33 x 18 / 5
= 594 / 5
= 118.8 km/hr.
Speed of the train is 118.8 km/hr.

Rough Workspace

Example #11
A boy is standing on a railway bridge which is 150 meter long. He find that a train passes the bridge in 40 seconds but the train himself in 10 sec, Find the length of the train and speed.

  1. 18 km/hr
  2. 21 km/hr
  3. 25 km/hr
  4. 29 km/hr

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (A)
How to Solve
First of all, we find the length of train,
We assume that the length of the train be X meters.
Then, X / 10 = X + 150 / 40
40X = 10X + 1500
30X = 1500
X = 50 meter.

Now, the speed of the train is:
Speed = Distance / Time
Speed = 50 / 10
Speed = 5 m/sec

So, convert 5 m/sec into km/hr
5 x 18 / 5
= 18 km/hr.

So, speed of the train is 18 km/hr.

Rough Workspace

Few examples of Problems on Trains with Shortcut Tricks

 

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9 comments

    • Tarun says:

      length of the train is 270 mtrs
      length of the bridge is thrice the length of train hence 270*3=810
      now
      length of both = 810+270=1080
      speed =distance/ time
      speed= 1080/30=36 m/s
      now change it into km/h :0

    • Tarun says:

      length of the train= 270mtrs
      length of the bridge is thrice the length of train hence
      270*3= 810

      Now,
      length of both = 810+270=1080
      speed =distance/time
      speed= 1080/30= 36 m/s

      Now change it into km/h 🙂

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