Question
A 130 m long train crosses another 250 m long train
running in the opposite direction in 10 seconds. If the shorter train crosses a pole in 10 seconds, what is the speed of longer train?Solution
Speed of the shorter train = 130/10 = 13 m/sec Let the speed of the longer train be x km/hr According to the question, ⇒ (13 + x) = (130 + 250)/10 ⇒ 13 + x = 380/10 ⇒ x = 38 – 13 = 25 ⇒ x = 25 x 18/5 = 90 km/hr
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