Two trains of equal length take 10 sec and 15 sec respectively to cross a telegr

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Two trains of equal length take 10 sec and 15 sec respectively to cross a telegraph post. If the length of each train be 120 metres, in what time (in seconds) will they cross each other travelling in opposite direction ?

Options:

A . 16 sec

B . 15 sec

C . 12 sec

D . 10 sec

Answer: Option C

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