A train 700 m long is running at a speed of 60 km h If it takes 72 seconds to cross a bridge then fi...........

Quantitative Aptitude (MTS) Time & distance

A train 700 m long, is running at a speed of 60 km/h. If it takes 72 seconds to cross a bridge, then find the length of the bridge.

This questions was previously asked in

SSC MTS 27th October 2021 Shift-1

1700 m

1200 m

600 m

500 m

- To determine the length of the bridge, we first need to calculate the distance the train travels in 72 seconds.

- The speed of the train is 60 km/h.

- We convert the speed to meters per second: \(60 \times \frac{1000}{3600} \approx 16.67 \text{ m/s}\).

- The train crosses the entire length (train + bridge) in 72 seconds.

- Distance covered by the train in 72 seconds: \(16.67 \times 72 = 1200 \text{ meters}\).

- The train's length is 700 meters.

- Thus, the length of the bridge is \(1200 - 700 = 500 \text{ meters}\).

- Therefore, the correct option is Option 4: 500 m.

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