Question
A train passes an electrical pole in 18 seconds and
passes a platform 420 m long in 60 seconds. Find the length of the train.Solution
Let the length of the train be ‘x’ meter. ∴ x/18 = (x + 420)/60 ⇒ 60x = 18x + 7560 ⇒ 42x = 7560 ⇒ x = 180 m
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