Question
A train 200 m long crosses a platform 250 m long in 18
seconds. The speed ratio of this train to another is 5:7. What is the length of the other train if it crosses a pole in 13 seconds?Solution
ATQ,
Speed of train 1 = (200 + 250) / 18 = 25 m/sec
Speed of train 2 = (25 × 7) / 5 = 35 m/sec
Length of train 2 = 35 × 13 = 455 m
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