Question
Train A running at speed of 63 km/hr crosses a platform
having twice the length of train in 18 sec. Train B whose length is 330m crosses same platform in 36 sec, then find the speed of train B ?Solution
Let length of train A = x Length of platform = 2x Speed = distance/time ⇒ 63 x 5/18 = (x + 2x)/18 ⇒ x = 105 m = length of train A Length of platform = 105 x 2 = 210m For train B, Speed = distance/time ⇒ (210 + 330)/36 x (18/5) ⇒ 54 km/hr
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