A train is 360 meter long is running at a speed of 45 km hour In what time will it pass a bridge of ...........

Quantitative Aptitude ( CCS) Problems on trains

A train is 360 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length.

20 seconds

30 seconds

40 seconds

50 seconds

Speed = 45 Km/hr = 45*(5/18) m/sec
= 25/2 m/sec
Total distance = 360+140 = 500 meter

Time = Distance/speed = 500 * 2/25 = 40s

Hence,option 3 is the correct answer.

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