two trains starting at the same time having length 200 each are moving in same direction if the speed of each train is 30 kilometre /h and 35 km / h respectively find when they will cross each other
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Answer:
D = 200+200 = 400m
usual speed = 35-30 = 5*5/18 = 25/18 m/s
time to cross = 400*18/25 = 288sec
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