Question
Train A running at a speed of 42 km/hr crosses train B
in 36 seconds. Find the speed of train B (in km/hr), if the sum of the length of train A and B is 550 meters and both trains running in the opposite direction.Solution
Let speed of train B be ‘x’ km/hr. According to question, => 36(42 + x) × (5/18) = 550 => 1512 + 36x = 1980 => 36x = 468 => x = 13 km/hr
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