Question
Train A of length 180 m crosses a stationary pole in 9
seconds. Train B of length 120 m crosses a stationary pole in 8 seconds. In how much time (in seconds) will the two trains cross each other when running in the same direction?Solution
ATQ, Speed of A = 180/9 = 20 m/s Speed of B = 120/8 = 15 m/s Same direction → relative speed = 20 − 15 = 5 m/s Total distance = 180 + 120 = 300 m Time = 300 / 5 = 60 s.
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