Two trains are moving in the same direction at the speed of 42 km/hr a – McqOptions

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1.	Two trains are moving in the same direction at the speed of 42 km/hr and 84 km/hr, their lengths are 320 metres and 380 metres respectively. What is the time taken (in seconds) by faster train to cross the slower train?
A.	60
B.	80
C.	90
D.	120
Answer» B. 80

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