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1). 14 seconds2). 15 seconds3). 18 seconds4). 16 seconds |
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Answer» Relative SPEED between TWO trains = 72km/hr. or 20m/s Let the length of train B be L m Acc. to the question, $(\frac{{150 + \;L}}{{13}} = 20)$ Or, L = 110m And, $(\frac{{190 + 110}}{{20}} = \;\frac{{300}}{{20}} = 15)$ ∴ Time TAKEN by train B to cross train C is 15 seconds. |
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