Question

5. a train 270 metre long is running speed 36 km/h how long will it take to cross a bridge 180 metre long
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Answer 1

Answer:

HEY MATE

According to the question

According to the questionCrossing time =l1+l2speed

According to the questionCrossing time =l1+l2speed=270+18036×518=45010

According to the questionCrossing time =l1+l2speed=270+18036×518=45010=45 second

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Answer 2

Answer:

Length of the train = 270 m

Speed of the train = 36 km/h

Length of bridge = 180 m

So, we have to add both the lengths = 270 m + 180 m

                                                              = 450 m

                                                              = 0.450 km

Also Time taken = $\frac{Distance}{Speed}$

                           = 45 / 3600

                           = 1/8 hr

                           = 15/2 minutes

∴ Time taken by the train to cross bridge = 7.5 minutes