Question
A goods train 350 m long passes through a tunnel of
length 1250 m in 80 seconds. What is the speed of the train?Solution
ATQ, Let speed of train be x km/hr, then x × (5/18) = (350 + 1250)/20 = x = 20 × (18/5) = x = 72 km/hr. ∴ Speed of train is 72 km/hr.
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