A train crosses a stationary pole in 20 seconds and a bridge in 32 seconds. If the length of the bridge is 1200 metres, then what is the speed of the train?

360 km/h

According to question ,

1200 m bridge is crossed in 32 - 20 = 12 sec

So , Speed= \(\frac{1200}{12}\) = 100 m/sec

100 m/sec = 100 × \(\frac{18}{5}\) = 360 km/h

So , Speed of train is 360 km/h