two trains, 150 metres and 100 metres long respectively, are running on parallel lines. if they are running in the same direction, they pass each other in 50 seconds. if they are moving in the opposite direction the faster train crosses the slower train in 5 seconds. what is the speed of the slower train?

get two trains, 150 metres and 100 metres long respectively, are running on parallel lines. if they are running in the same direction, they pass each other in 50 seconds. if they are moving in the opposite direction the faster train crosses the slower train in 5 seconds. what is the speed of the slower train? from screen.

Two trains of lengths 100 m and 150 m are travelling in opposite directions at speeds of 75 kmph and 50 kmph respectively. What is the time taken by them to cross each other?

Click here👆to get an answer to your question ✍️ Two trains of lengths 100 m and 150 m are travelling in opposite directions at speeds of 75 kmph and 50 kmph respectively. What is the time taken by them to cross each other?

Question

Two trains of lengths 100 m and 150 m are travelling in opposite directions at speeds of 75 kmph and 50 kmph respectively. What is the time taken by them to cross each other?

A

7.4s

B

7.2s

C

7s

D

6.8s

Easy Open in App Solution Verified by Toppr

Correct option is B)

Relative speed of two trains =125 km.p.h.

Total length of two trains =250 m

Time= (125× 18 5 ​ ) 250 ​ sec = 125×5 250×18 ​ sec=7.2sec

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[Solved] Two trains 150 m and 100 m in length, respectively, are runn

Given, Length of the two trains is 150 m and 100 m respectively. Speed of the two trains is 39 km/hr and 21 km/hr. Formula: If the speed of the two trains i

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Two trains 150 m and 100 m in length, respectively, are running in opposite directions, one at the rate of 39 km/h and the other at the rate of 21 km/h. In how much time will they be completely clear of each other from the moment they meet?

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DMRC CRA Paper I Previous Paper 1 (Held On: 17 Feb 2020 Shift 2)

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10 sec 18 sec 15 sec 20 sec

Answer (Detailed Solution Below)

Option 3 : 15 sec

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Detailed Solution

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Given,

Length of the two trains is 150 m and 100 m respectively.

Speed of the two trains is 39 km/hr and 21 km/hr.

Formula:

If the speed of the two trains is x km/hr and y km/hr respectively (x > y).

Relative speed, if opposite directions = (x + y) km/hr

Relative speed, if same directions = (x – y) km/hr

Speed = Distance/Time

1 km/hr = 5/18 m/

Calculation:

According to the question

Sum of length of the both trains = (150 + 100) = 250 m

⇒ (39 + 21) × 5/18 = 250/Time

⇒ 60 × 5/18 = 250/Time

⇒ 50/3 = 250/Time

⇒ Time = 250 × (3/50)

∴ Time = 15 seconds

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Two trains, 250 metres and 150 metres long respectively, are running on parallel lines. If they are running in the same directions, the faster train crosses the slower train in 40 seconds. If they are moving in the opposite direction they pass each other in eight seconds. What is the speed of the slower train?

Two trains, 250 metres and 150 metres long respectively, are running on parallel lines. If they are running in the same directions, the faster train crosses t

Home > English > Class 12 > Maths > Chapter > Web Questions >

Two trains, 250 metres and 150...

Two trains, 250 250 metres and 150 150

metres long respectively, are running on parallel lines. If they are running in the same directions, the faster train crosses the slower train in

40 40

seconds. If they are moving in the opposite direction they pass each other in eight seconds. What is the speed of the slower train?

Updated On: 27-06-2022

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