if you want to remove an article from website contact us from top.

# a man in a train notices that he can count 41 telephone posts in one minute. if they are known to be 100 metres apart, then at what speed is the train travelling?

Category :

### Mohammed

Guys, does anyone know the answer?

get a man in a train notices that he can count 41 telephone posts in one minute. if they are known to be 100 metres apart, then at what speed is the train travelling? from screen.

## A man in a train notices that he can count 21 telephone posts in one minute. If they are known to be 50 metres apart, then at what speed is the train travelling?

Click here👆to get an answer to your question ✍️ A man in a train notices that he can count 21 telephone posts in one minute. If they are known to be 50 metres apart, then at what speed is the train travelling?

Question

A

B

C

D

## 55 km/hr

Medium Open in App Solution Verified by Toppr

Correct option is B)

Distance between the 21 telephone posts =20×50m=1000m

Time taken to cross these posts = 1 minute

= 60 seconds

∴ Speed of the train =

60 1000 ​ m/sec = 60 1000 ​ × 5 18 ​ km/hr =60km/hr.

121 9

स्रोत : www.toppr.com

## A man in a train notices that he can count 41 telephone posts in one minute. If they are known to be 50 metres apart, then at what speed is the train travelling?

60 km/hr 100 km/hr 110 km/hr 120 km/hr

Number of gaps between 41 poles = 40

So total distance between 41 poles = 40*50

= 2000 meter = 2 km

In 1 minute train is moving 2 km/minute.

Speed in hour = 2*60 = 120 km/hour

Similar Questions :

## 1. A thief is noticed by a policeman from a distance of 200 m. The thief starts running and the policeman chases him. The thief and the policeman run at the rate of 10 km and 11 km per hour respectively. What is the distance between them after 6 minutes ?

50 meter 100 meter 110 meter None of above

Relative speed of the thief and policeman = (11 – 10) km/hr = 1 km/hr

Distance covered in 6 minutes =

1 60 ∗6= 1 10 =100meters 160∗6=110=100meters

So distance between them after 6 minutes = 200 - 100

= 100 meters

## 2. A Man travelled a distance of 61 km in 9 hours. He travelled partly on foot at 4 km/hr and partly on bicycle at 9 km/hr. What is the distance travelled on foot?

16 km 14 km 12 km 10 km

Let the time in which he travelled on foot = x hour

Time for travelling on bicycle = (9 - x) hr

Distance = Speed * Time, and Total distance = 61 km

So, 4x + 9(9-x) = 61 => 5x = 20 => x = 4

So distance traveled on foot = 4(4) = 16 km

## 3. A walks around a circular field at the rate of one round per hour while B runs around it at the rate of six rounds per hour. They start at same point at 7:30 am. They shall first cross each other at ?

7:15 am 7:30 am 7: 42 am 7:50 am

Relative speed between two = 6-1 = 5 round per hour

They will cross when one round will complete with relative speed,

which is 1/5 hour = 12 mins.

So 7:30 + 12 mins = 7:42

## 4. Ram and Sham are running a race, Ram runs 25% faster than Sham and is able to allow Sham a lead of 7 meters to end a race in dead heat. Find the distance of the race.

32 meters 35 meters 39 meters 40.5 meters

Important to Note first - Dead Head means - run or finish a race at exactly level or at same time.

From question it is clear that Ram runs faster than Sham by 25%,

So if Sham runs 100 meter in a given time then Ram will run 125 meter in that time.

So if Sham runs 4 meter then Ram will run 5 meter in given time (divide both by 25)

=> Ram can give Sham a lead of 1 meter in 5 meter race to finish race in dead heat.

Ratio of length of start given : length of race :: 1 : 5

As per question, start was given of 7 meter, So,

Length of race was 7 * 5 = 35.

## 5. A train traveled at an average speed of 100 km/hr, stopping for 3 minutes after every 75 km. How long did it take to reach its destination 600 km from the starting point.

6 hours 24 mins 6 hours 21 mins 6 hours 18 mins 6 hours 15 mins

Time taken to cover 600 km = 6 hours [because train speed is 100 km/hr]

Number of stops = begin{aligned}

frac{600}{75} - 1 = 7 \

text{Total time on stops =}7*3 = 21 mins

end{aligned}

Total time taken by train = 6 hours 21 mins

स्रोत : www.mastguru.com

## A man in a train notices that he can count 41 tele

Time and Distance Questions & Answers for GRE : A man in a train notices that he can count 41 telephone posts in one minute. If they are known to be 50 metres apart, then at what speed is the train

26 Q:

A man in a train notices that he can count 41 telephone posts in one minute. If they are known to be 50 metres apart, then at what speed is the train travelling?

A) 60 km/hr B) 100 km/hr

C) 110 km/hr D) 120 km/hr

Explanation:

Number of gaps between 41 poles = 40

So total distance between 41 poles = 40*50

= 2000 meter = 2 km

In 1 minute train is moving 2 km/minute.

Speed in hour = 2*60 = 120 km/hour

Subject: Time and Distance - Quantitative Aptitude - Arithmetic Ability

Exam Prep: GRE Related Questions Q:

Two trains of equal length travelling in opposite directions at 72 km/h and 108 km/h cross each other in 10 seconds. In how much time(in seconds) does the first train cross a platform of length 350 m?

Filed Under: Time and Distance - Quantitative Aptitude - Arithmetic Ability

Exam Prep: Bank Exams

1 569 Q:

A train covers 60 km at a uniform speed. If the speed had been 8 km/h more, it would have taken 10 hours less for the same journey. What is the speed of the train (in km/h)?

Filed Under: Time and Distance - Quantitative Aptitude - Arithmetic Ability

Exam Prep: Bank Exams

3 458 Q:

A car covers 25 km at a uniform speed. If the speed had been 8 knv/h more, it would have taken 10 hours less for the same journey. What is the speed of the car (in km/h)?

Filed Under: Time and Distance - Quantitative Aptitude - Arithmetic Ability

Exam Prep: Bank Exams

3 405 Q:

A car covers 25 km at a uniform speed. If the speed had been 8 knv/h more, it would have taken 10 hours less for the same journey. What is the speed of the car (in km/h)?

Filed Under: Time and Distance - Quantitative Aptitude - Arithmetic Ability

Exam Prep: Bank Exams

2 375 Q:

The ratio between the speeds of two trains is 5 : 7. If the first train covers 300 km in 3 hours, then the speed (in km/h) of the second train is:

Filed Under: Time and Distance - Quantitative Aptitude - Arithmetic Ability

Exam Prep: Bank Exams

2 424 Q:

The ratio between the speeds of two trains is 2 : 5. If the first train runs 350 km in 5 h, then the difference between the speeds (in km/h) of both the trains is:

Filed Under: Time and Distance - Quantitative Aptitude - Arithmetic Ability

Exam Prep: Bank Exams

2 636 Q:

Given that the lengths of the paths of a ball thrown with different speeds by two boy sare the same, if they take 0.6 seconds and 1 second respectively to cover the said length, what is the average speed of travel for the first throw, if the same for the second is 96 km/h?

A) 160 km/h B) 200 km/h

C) 150 km/h D) 100 km/h

Filed Under: Time and Distance - Quantitative Aptitude - Arithmetic Ability

Exam Prep: Bank Exams

1 700 Q:

A man divided his journey into three parts of distances of 18 km, 20 km and 27 km. He travelled the distances at the speeds of 6 km/h, 5 km/h and 9 kn/h,respectively. What was his average speed during the entire journey?

A) 6.5 km/h B) 4.5 km/h

C) 7.5 km/h D) 5.5 km/h