Two trains travelling in the same direction at 40 and 22km/hr completely pass off another in 1 minute . If the length of the first train is 125 m , what is the length of the second train?
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Step-by-step explanation:
Relative speed of trains = 40 - 22 = 18 km/hr
∵ 18 km/hr = 5 m/sec
Let the length of second train = L m
Time taken to cross each other = 5L+125
∴5L+125=60⇒ L = 175 m
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