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Relative speed = 40 – 28 = 12 km/hr Speed (m/sec) = 12 × (5/18) = 10/3 m/sec Time = Total length of both the trains/Relative speed => Time = (82 + 66)/(10/3) = 44.4 sec
Train ‘A’ can cross a pole in 8 seconds and a 70 metre long platform in 12 seconds. If the ratio of length of train ‘A’ and train ‘B’ is 2:5...
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