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Train 'R' can cross a pole in 6 seconds and a 240 metres long bridge in 10 seconds. Train 'S' whose length is 75% of the length of train 'R' runs in the same direction of train 'R'. If train 'S' crosses train 'R' in 14 seconds, then find the speed of train 'S'.

A 100 m/s

B 105 m/s

C 110 m/s

D 115 m/s

E 120 m/s

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