Two trains of equal lengths take 10 seconds and 15 seconds 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?

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Accepted Answer

Speed of the first train = ❨ 120 ❩ m/sec = 12 m/sec. 10 …

∴ Required time =	[	(120 + 120)	]	sec = 12 sec.
		20

Two trains of equal lengths take 10 seconds and 15 seconds 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?

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