Problems on trains

Quantitative Aptitude ( CCS)

Title

45:30

8 of 24 completed

5 of 15 completed

38 of 100 completed

8 of 20 completed

Indian Economy - Understanding the basics of Indian economic system

The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is:

200 m

225 m

245 m

250 m

Speed = 45 x 5/18 m/sec = 25/2 m/sec
Time = 30 sec
Let the length of bridge be x metres.
Then, (130 + x)/30 = 25/2
=> 2(130 + x) = 750
=> x = 245 m