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Two trains are 2 km apart and their leng...

Two trains are 2 km apart and their lengths are 200 m and 300 m. They are approaching towards each other with a speed of 20 m/s and 30 m/s, respectively. After how much time will they cross each other?

A

50 s

B

100 s

C

25/3 s

D

150

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The correct Answer is:
A
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