Question 119

A 145-meter long train passes at 54 kilometers and crosses a bridge in 29 seconds. If so, find the length of the bridge. (In meters)

Solution

Speed of train = 54 kmph = $$54\times\frac{5}{18}=15$$ m/s

Let length of bridge = $$x$$ m

Using, speed = distance/time

=> $$15=\frac{145+x}{29}$$

=> $$145+x=29\times15=435$$

=> $$x=435-145=290$$ m

=> Ans - (D)

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