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4

Two trains 140 m and 160 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time (in seconds) which they take to cross each other, is-

A. 9

B. 9.6

C. 10

D. 10.8

Correct Answer :

D. 10.8


Relative speed = (60 + 40) km/hr = 100 x 518 m/sec =2509 m/sec. Distance covered in crossing each other = (140 + 160) m = 300 m.  Required time = 300 x9250 sec = 545 sec = 10.8 sec.

Related Questions

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4

The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is

A. 200 meter

B. 225 meter

C. 245 meter

D. 250 meter

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4

How many seconds will a 500 metre long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?

A. 25

B. 30

C. 40

D. 45

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4

A 270 metres long train running at the speed of 120 kmph crosses another train running in opposite direction at the speed of 80 kmph in 9 seconds. What is the length of the other train?

A. 220 meter

B. 225 meter

C. 230 meter

D. 235 meter

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4

A train 100 m long is running at the speed of 30 km / hr. Find the time taken  by   it to pass a man standing near the railway line.

A. 12 sec

B. 20 sec

C. 15 sec

D. 17 sec

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4

A goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 26 seconds. What is the length of the goods train?

A. 230 m

B. 240 m

C. 260 m

D. 270 m

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4

Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is ?

A. 1:3

B. 3:2

C. 3:5

D. 3:7

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4

A 270 metres long train running at the speed of 120 kmph crosses another train running in opposite direction at the speed of 80 kmph in 9 seconds. What is the length of the other train?

A. 230 meter

B. 240 meter

C. 260 meter

D. 320 meter

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4

A train is 360 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length.

A. 20 seconds

B. 30 seconds

C. 40 seconds

D. 50 seconds

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4

How long does a train 110 meters long running at the speed of 72 km/hour take to cross a bridge 132 meters in length?

A. 15 seconds

B. 12.1 seconds

C. 10 seconds

D. 8.1 seconds

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4

A train is 100 meter long and is running at the speed of 30 km per hour. Find the time it will take to pass a man standing at a crossing.

A. 10 seconds

B. 12 seconds

C. 14 seconds

D. 16 seconds

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4

In what time will a train 100 meters long cross an electric pole, if its speed is 144 km/hr

A. 5 seconds

B. 4.5 seconds

C. 3 seconds

D. 2.5 seconds

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4

Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is

A. 50 m

B. 72 m

C. 80 m

D. 82 m

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4

How many seconds will a 500 meter long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr

A. 25 Seconds

B. 28 Seconds

C. 30 Seconds

D. 35 Seconds

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4

A train overtakes two persons who are walking in the same direction in which the train is going, at the rate of 2 kmph and 4 kmph and passes them completely in 9 and 10 seconds respectively. Find the length of train ?

A. 45 meter

B. 50 meter

C. 55 meter

D. 60 meter

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4

A train speeds past a pole in 15 seconds and a platform 100 m long in 25 seconds. Its length is:

A. 50 m

B. 150 m

C. 200 m

D. Data inadequate

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4

A train, 800 meter long is running with a speed of 78 km/hr. It crosses a tunnel in 1 minute. What is the length of the tunnel ?

A. 650 meter

B. 555 meter

C. 500 meter

D. 458 meter

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4

A train running at the speed of 60 km/hr crosses a pole in 9 seconds. Find the length of the train.

A. 150 meter

B. 145 meter

C. 140 meter

D. 135 meter

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4

A jogger running at 9 kmph alongside a railway track is 240 metres ahead of the engine of a 120 metre long train running at 45 kmph in the same direction. In how much time will the train pass the jogger ?

A. 30 seconds

B. 32 seconds

C. 34 seconds

D. 36 seconds

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4

A 300 metre long train crosses a platform in 39 seconds while it crosses a signal pole in 18 seconds. What is the length of the platform?

A. 320 m

B. 350 m

C. 650 m

D. Data inadequate

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4

A train moves past a telegraph post and a bridge 264 m long in 8 seconds and 20 seconds respectively. What is the speed of the train?

A. 69.5 km/hr

B. 70 km/hr

C. 79 km/hr

D. 79.2 km/hr

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4

A train 108 m long moving at a speed of 50 km/hr crosses a train 112 m long coming from opposite direction in 6 seconds. The speed of the second train is:

A. 48 km/hr

B. 54 km/hr

C. 66 km/hr

D. 82 km/hr

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4

A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?

A. 120 metres

B. 180 metres

C. 324 metres

D. 150 metres

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4

Two trains are running in opposite directions in the same speed. The length of each train is 120 meter. If they cross each other in 12 seconds, the speed of each train (in km/hr) is

A. 30 Km/hr

B. 36 Km/hr

C. 80 Km/hr

D. 90 Km/hr

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4

Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 seconds. What is the length of the fast train?

A. 23 m

B. 2329 m

C. 2779 m

D. 29 m

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4

Two stations A and B are 110 km apart on a straight line. One train starts from A at 7 a.m. and travels towards B at 20 kmph. Another train starts from B at 8 a.m. and travels towards A at a speed of 25 kmph. At what time will they meet?

A. 9 a.m.

B. 10 a.m.

C. 10.30 a.m.

D. 11 a.m.

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4

A 300 meter long train crosses a platform in 39 seconds while it crosses a signal pole in 18 seconds. What is the length of the platform.

A. 310 meter

B. 335 meter

C. 345 meter

D. 350 meter

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4

A train 110 metres long is running with a speed of 60 kmph. In what time will it pass a man who is running at 6 kmph in the direction opposite to that in which the train is going?

A. 5 sec

B. 6 sec

C. 7 sec

D. 10 sec

What is the correct answer?

4

Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 seconds. What is the length of the fast train ?

A. 2779

B. 2879

C. 2979

D. 3079

What is the correct answer?

4

Two trains are moving in opposite directions @ 60 km/hr and 90 km/hr. Their lengths are 1.10 km and 0.9 km respectively. The time taken by the slower train to cross the faster train in seconds is

A. 36

B. 45

C. 48

D. 49

What is the correct answer?

4

A train overtakes two persons walking along a railway track. The first one walks at 4.5 km/hr. The other one walks at 5.4 km/hr. The train needs 8.4 and 8.5 seconds respectively to overtake them. What is the speed of the train if both the persons are walking in the same direction as the train?

A. 66 km/hr

B. 72 km/hr

C. 78 km/hr

D. 81 km/hr