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A 150 m long train crosses another 210 m long train running in the opposite direction in 10.8 seconds. If the shorter train crosses a pole in 12 seconds, what is the speed of longer train ?
60 kmph
80 kmph
75 kmph
85 kmph
Total distance = 150 + 210 = 360 mts
Time taken to cross each other when moving in opposite direction = 10.8 sec
Relative speed of trains = (360/10.8) x 18/5 = 3600/30 = 120 kmph
Speed of shorter train = (150/12) x 18/5 = 45 kmph
Hence, speed of longer train = 120 - 45 = 75 kmph.
Hence, option 3 is the correct answer.
Report error
Gaurav
2 same option
updated kindly check.
Vinay Kumar
Sir! question hi wrong h
kindly recheck the solution . question is not wrong.
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