Two trains 400m and 300m long run at the speeds of 50 kmph and 40kmph respective

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✪ Choose the correct option.

Two trains 400m and 300m long run at the speeds of 50 kmph and 40kmph respectively in opposite Directions on parallel tracks. The time taken to cross each other?

A. 20 sec
B. 28 secs
C. 25 sec
D. 24 sec

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