A train having a length of 270 metre is running at the speed of 120 kmph It crosses another train ru...........

Quantitative Aptitude ( CCS) Problems on trains

A train having a length of 270 metre is running at the speed of 120 kmph. It crosses another train running in opposite direction at the speed of 80 kmph in 9 seconds. What is the length of the other train?

320m

190m

210m

230m

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Explanation:

Relative speed = (120+80) = 200 km/hr
=200×5/18 = 500/9 m/s
Time =9 seconds
Distance covered = 500/9×9 = 500 metre
Length of other train = (500−270) = 230 metre

Hence, option 4 is the correct answer.