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A 270 metres long train running at the speed of 120 kmph crosses another train running in opposite direction at the speed of 80 kmph in 9 seconds. What is the length of the other train?

A. 220 meter

B. 225 meter

C. 230 meter

D. 235 meter

Correct Answer : C.


As trains are running in opposite directions so their relative speed will get added
So, Relative speed = 120 +80 = 200 kmph
= 200*(5/18) = 500/9 m/sec
Let the length of other train is x meter then
x+2709=5009⇒x+270=500⇒x=230
So the length of the train is 230 meters

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