The length of a train and that of a platform are equal. If with a speed of 126 k/hr, the train crosses the platform in one minute, then the length of the train (in meters) is?
Choices:
A) 757  B) 758  C) 1050  D) 750  E) 738
Speed = [126 * 5/18] m/sec = 35 m/sec; Time = 1 min. = 60 sec.   Let the length of the train and that of the platform be x meters.   Then, 2x/60 = 35 è x = 35 * 60 / 2= 
<gadget id="calculator">35 * 60 / 2</gadget>
<output>1_050</output>
1050   Answer:1050
<result>C</result>
The length of a train and that of a platform are equal. If with a speed of 126 k/hr, the train crosses the platform in one minute, then the length of the train (in meters) is?