Question

a 100 Mr Long train cross a 300mr long bridge at a speed of 90km. perhour what is the time taken to cross the bridge completely​

Answer 1

The train have to cover the distance of the bridge as well as it's own lenght.

So the total distance it have to cover = 300+100

= 400m = 0.4km

time = distance/speed

= 0.4/90

= 0.0044hr = 0.26 min = 16 sec

Answer 2

Answer:

The train has to cover the distance of the bridge as well as its own length.

So the total distance it has to cover = 300+100

= 400m = 0.4km

time = distance/speed

= 0.4/90

= 0.0044hr = 0.26 min = 16 sec

Explanation:

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