Exams › IBPS PO › Quantitative Aptitude

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

1. 200 m
2. 225 m
3. 245 m
4. 250 m

Correct answer: 245 m

Solution

At 45 km/h, the train moves at 12.5 m/s. In 30 seconds it covers 375 m in total, which includes the 130 m train length and the bridge length, so the bridge is 245 m long.

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