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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