A 320 m long train crosses a 280 m long train running in opposite direction in...

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A 320 m long train crosses a 280 m long train running in opposite direction in 5 sec. Ratio between speed of longer train and smaller train is 7: 8. If faster train crosses a platform in 8 sec, then find time taken by slower train to cross a bridge, which is 90 meters more long than platform? (a)12 sec (b) 10.42 sec (c) 11.46 sec (d) 14.54 sec (e) 12.56 sec A 320 m long train crosses a 280 m long train running in opposite direction in 5 sec. Ratio between speed of longer train and smaller train is 7: 8. If faster train crosses a platform in 8 sec, then find time taken by slower train to cross a bridge, which is 90 meters more long than platform? (a)12 sec (b) 10.42 sec (c) 11.46 sec (d) 14.54 sec (e) 12.56 sec

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