A train of length 342 m is running at 54 km h In how much time in seconds will it cross a bridge of ...........

Quantitative Aptitude (CPO) Time & distance

A train of length 342 m is running at 54 km/h. In how much time(in seconds) will it cross a bridge of length 438 m?

This questions was previously asked in

SSC CPO 13th Dec 2019 Shift-1

- To find out how long the train takes to cross the bridge, calculate the total distance the train needs to cover.

- Total distance = length of the train + length of the bridge = 342 m + 438 m = 780 m.

- The speed of the train needs to be in meters per second (m/s).

- Convert the speed from km/h to m/s:

- Speed = 54 km/h * (1000 m/km) / (3600 s/h) = 15 m/s.

- Time taken to cross = total distance / speed = 780 m / 15 m/s = 52 seconds.

- Option 4: 52 seconds is correct.

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