Question

plz.. answer this question... Question no. 9
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Answer 1

3. 250m

Let the length of the bridge =xm

Total distance travelled to pass the bridge =50m + xm.

Speed =30km /h

=100/12m/s

Time taken= 36s

As we know

Distance = speed * time

50+x =(100/12)*36

50+x=300

x=250

So. The length of the bridge =250m.

Answer 2

Answer:

Let the length of bridge =xm

Total distance travelled to pass the bridge =50m+xm

Speed= 30km/h

=100/12m/s

Time taken = 36 s

AS we know

Distance = speed*time

50+x=300

X=250

Hope this helps!!!

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