Question
Train P is 180 m long and crosses a platform of 120 m in 15
seconds. The speed ratio of train P to train Q is 4:5. What is the length of train Q if it crosses a pole in 16 seconds?Solution
ATQ,
Train P speed = (180 + 120) / 15 = 20 m/sec
Speed of train Q = (20 × 5) / 4 = 25 m/sec
Length of train Q = 25 × 16 = 400 m
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