A train covers a distance of 12 km in 10 min. If it takes 12 sec to pass a telegraph post, then the length of the train is?	Choose the correct option:
A) 100	B) 220	C) 120	D) 130	E) 240
Speed = (12/10 * 60) km/hr = (72 * 5/18) m/sec = 20 m/sec.   Length of the train = 20 * 12= 
<gadget id="calculator">20 * 12</gadget>
<output>240</output>
240 m.   Answer: Option 240
<result>E</result>
A train covers a distance of 12 km in 10 min. If it takes 12 sec to pass a telegraph post, then the length of the train is?