Q.15. Two trains 150 m and 120 m long moving in same direction at 72 km/hr and 36 km/hr respectively on parallel tracks. How Iong would it take the faster train to cross slower train?

Dear Student ,
 
Please find below the solution to the asked query :

Speed of faster train=72 Km/hr=72×518=20 m/s.Speed of slower train=36 Km/hr=36×518=10 m/s.Time taken by faster train to cross slower train=length of slower train + Length of faster trainSpeed of faster train - Speed of slower train=120+15020-10=27010=27 seconds   ANS...
 
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