Thetrain 240 m long running at a speed of 60 kmph will take how much time to cross another train which is 270m long of speed 48 km/hr
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In time T train 2 (the slower) travels v2 * T
train 1 must travel v2 * T + 510 m to completely pass train 2
v1 * T = v2 T + 510
T = 510 / ( v1 - v2) = 510 m / 12 km/hr
1 km / hr = 1000 m / 3600 sec = .278 m/sec
T = 510 m / (12 * .278 m/sec) = 153 sec = 2 min and 33 sec
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