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Finding the Way

The ratio of ...

Question

The ratio of the speed of two trains A and B running in the opposite direction is $5 : 15$ . If each train is 200 m long and crosses each other in 10 s, then find the amount of time (in seconds) that train A takes to cross a man standing on a platform.

A

10

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B

15

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C

20

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D

22

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Solution

The correct option is C 20

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