Topics

General Knowledge
General Science
General English
Aptitude
General Computer Science
General Intellingence and Reasoning
Current Affairs
Exams
Elementary Mathematics
English Literature

A 280 m long train crosses a platform which is three times of its length, in 6 min 40 s. What is the speed of the train?

A) 3.2 m/s
B) 1.4 m/s
C) 2.8 m/s
D) Cannot be determined

Correct Answer:



C) 2.8 m/s

Description for Correct answer:

Length of the train = 280 m

Length of the platform = 280 x 3 = 840 m

Taken time = 6 min 40 s

=> (360 + 40) 5 =400 s

Therefore, Required speed = \( \Large \frac{Distance}{Time} \)

= \( \Large \frac{840+280}{400} = \frac{1120}{400} \) = 28 m/s

Part of solved Trains questions and answers : >> Aptitude >> Trains

Comments

Similar Questions

1). Two trains of lengths 105 m and 90 m, respectively run at the speeds of 45 km/h and 72 km/h, respectively in opposite directions on parallel tracks. Find the time which they take to cross each other.

A). 5 s

B). 6 s

C). 7 s

D). 8 s

2). A train passes two persons who are walking in the direction opposite to the direction of train at the rate of 10 m/s and 20 m/s respectively in 12 s and 10 s, respectively. Find the length of the train.

A). 500 m

B). 900 m

C). 400 m

D). 600 m

3). A train A is 180 m long, while another train B is 240 m long. A has a speed of 30 km/h and B's speed is 40 km/h. If the trains move in opposite directions, find when will A pass B completely?

A). 21 s

B). 21.6 s

C). 26.1 s

D). 26 s

4). A train of length 180 m, running by 72 km/h to cross the another train B which is running in the opposite direction to speed of 108 km/h and length is 120 m, in how much time?

A). 23 s

B). 12 s

C). 6 s

D). 30 s

5). A 110 m long train is running at a speed of 60 km/h. How many seconds, does it take to cross an another train of length 170 m, which is standing on parallel track?

A). 15.6 s

B). 16.8 s

C). 17.2 s

D). 18 s

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

A). 82 m

B). 50 m

C). 80 m

D). 72 m

7). Two trains, of same length are running in parallel tracks in opposite directions with speeds 65 km/h and 85 km/h respectively. They cross each other in 6 s. The length of each train is

A). 100 m

B). 115 m

C). 125 m

D). 150 m

8). The ratio between the speeds of two train is 8 : 9. Second train covers 360 km in 4 h. Distance covered by first train in 3 h (in km) is

A). 240

B). 480

C). 120

D). 60

9). The average speed of a bus is three-fourth the average speed of a train. The train covers 240 km in 12 h. How much distance will the bus cover in 7 h?

A). 110 km

B). 115 km

C). 105 km

D). 100 km

10). Excluding stoppages, the speed of a train is 108 km/h and including stoppages, it is 90 km/h. For how many minutes does the train stop per hour?

A). 5

B). 9

C). 10

D). 6