Two trains of equal lengths take 10 seconds and 15 seconds respectivel – McqOptions

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1.	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 ?
A.	20
B.	10
C.	12
D.	15
Answer» D. 15

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