A train covers a distance of 12 km in 10 min. If it takes 10 sec to pass a telegraph post, then the length of the train is?  Select the correct option:	A) 177 m	B) 189 m	C) 120 m	D) 178 m	E) 200 m
Speed = (12/10 * 60) km/hr = (72 * 5/18) m/sec   = 20 m/sec.   Length of the train = 20 * 10= 
<gadget id="calculator">20 * 10</gadget>
<output>200</output>
200 m.   Answer: 200 m
<result>E</result>
A train covers a distance of 12 km in 10 min. If it takes 10 sec to pass a telegraph post, then the length of the train is?