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A 120 m long train is moving in a direct...

A 120 m long train is moving in a direction with a speed of `20ms^(-1)`. Another train (130m long) moving with `30ms^(-1)` in the opposite directon crosses the first train in a time

A

36 s

B

30 s

C

6 s

D

5 s

Text Solution

Verified by Experts

The correct Answer is:
D
Required time = `("Total length of trains")/(v_(1)+v_(2))`, as trains are moving in opposite directions.
= `(120+130)/(20+30)`
`=(250)/(50)`
=5 sec
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