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Two trains 120m and 80m in length are running opposite direction with velocity 42km/h and 30km/h.In what time they will completely cross each other?

Asked by 27th July 2012, 5:29 PM
Answered by Expert
Answer:
relative vel of train of vel 42 km/h  w r t the other=42-(-30)=72 km/h as they are running opposite to each other.
the distance it (one withvel 42 km/h )have to cross=120+80=200 km to cross each other
will be=200/72  =2 hr 7/9 min
Answered by Expert 31st July 2012, 4:45 PM
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