a 180 m long train crosses another 270 m long train running in the opposite direction in 10.8 s. if the speed of the first train is 60 km/h, what is the speed of the second train in km/h?
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if 180 m long train has speed of 60km/hr
then, 270m long train will have speed of
60*180/1*1/270 =180km/hr
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