The length of the bridge, which a train 110 metres long and travelling at 45 km/hr can cross in 30 seconds, is: Pick:  A) 230  B) 240  C) 245  D) 250  E) 265

Rationale: "speed = [ 45 x 5 / 18 ] m / sec = [ 25 / 2 ] m / sec time = 30 sec let the length of bridge be x metres . then , ( 110 + x ) / 30 = 25 / 2 = > 2 ( 110 + x ) = 750 = > x = 265 m . answer : option e"
Answer: E