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A train 75 m long is moving at a speed of 45 km/hr. How long will it take to pass a platform 200 long?A) 42 secB) 22 secC) 20 secD) 36 sec |
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Answer» Answer: 25second Step-by-step explanation: TOTAL discovered by the LENGTH of both trains =50m+75m and, Their relative speed in same direction = 68−50=18 km/hr ∴(Speed SUBTRACTED in same direction) then, the TIME to cross other will be =125 m/sec18 kms =125×1818×5m/sec {∴1km/h=518m/s} =25 seconds |
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