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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

Correct Answer:




D) 600 m

Description for Correct answer:

Let the speed of the train be x.

According to the question,

\( \Large \left(x+10\right) \times 12 = \left(x+20\right) \times 10 \)

=> \( \Large 6x +60 = 5x + 100 \)

=> \( \Large x = 100 - 60 = 40 m/s \)

Therefore, Length of the train = \( \Large \left(x+10 \times 12\right) \)

= \( \Large \left(40+10\right) \times 12 \) = 600 m

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

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Similar Questions

1). 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

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2). 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?

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7). 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?

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8). 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?

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A). \( \Large 23\frac{2}{9} \) m

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