The length of the bridge, which a train 160 metres long and travelling at 45 km/hr can cross in 30 seconds, is? Choose the most appropriate option.
A) 255	B) 267	C) 245	D) 277	E) 215

Rationale: "speed = [ 45 x 5 / 18 ] m / sec = [ 25 / 2 ] m / sec time = 30 sec let the length of bridge be x metres . then , ( 160 + x ) / 30 = 25 / 2 = > 2 ( 160 + x ) = 750 = > x = 215 m . answer : e"
Answer: E