Question 60
Two trains A and B,186 m and 200 m long are running at 64 km/h and 80 km/h, respectively on parallel tracks. If they are running in the opposite directions, then how much time(in seconds) will a person sitting in the first train A take to cross the other train?
Solution
Since, they are running in opposite directions, relative speed = $$(64+80)=144$$ km/hr
= $$144\times\frac{5}{18}=40$$ m/s
Thus, time take by person in train A = $$\frac{200}{40}=5$$ seconds
=> Ans - (B)
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