In what time will a train 120 meters long cross an electric pole, if its speed is 184 km/hr
Options.
A) 5 seconds B) 4.5 seconds C) 3 seconds D) 2.3 seconds E) none of these

Rationale: "explanation : first convert speed into m / sec speed = 184 * ( 5 / 18 ) = 51 m / sec time = distance / speed = 120 / 51 = 2.3 seconds option d"
Answer: D