The length of a train and that of a platform are equal. If with a speed of 216 k/hr, the train crosses the platform in one minute, then the length of the train (in meters) is?	Pick one:  A) 1752  B) 1799  C) 1719  D) 1750  E) 1800

Rationale: "speed = [ 216 * 5 / 18 ] m / sec = 60 m / sec ; time = 1 min . = 60 sec . let the length of the train and that of the platform be x meters . then , 2 x / 60 = 60 ã ¨ x = 60 * 60 / 2 = 1800 answer : e"
Answer: E