Two trains of same length take 6 s and 9 s, respectively to cross a pole. If both the trains are running in the same direction, then how long will they take to cross each other?

Q: Two trains of same length take 6 s and 9 s, respectively to cross a pole. If both the trains are running in the same direction, then how long will they take to cross each other?

Given that, t1 = 6 s and t2 = 9 s Then, time taken by the trains to cross each other = 2t1 t2 / (t2 - t1) = (2 x 6 x 9)/(9 - 6) = 36 s

30 s
36 s
40 s
42 s

Correct Answer: 36 s

Explanation:

Given that, t₁ = 6 s and t₂ = 9 s
Then, time taken by the trains to cross each other = 2t₁ t₂ / (t₂ - t₁)
= (2 x 6 x 9)/(9 - 6) = 36 s

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