A train covers a distance of 12 km in 10 min. If it takes 6 sec to pass a telegraph post, then the length of the train is?	Choose the most appropriate option.
A) 277 B) 277 C) 120 D) 882 E) 272
Speed = (12/10 * 60) km/hr = (72 * 5/18) m/sec = 20 m/sec.   Length of the train = 20 * 6= 
<gadget id="calculator">20 * 6</gadget>
<output>120</output>
120 m.   Answer: 120
<result>C</result>
A train covers a distance of 12 km in 10 min. If it takes 6 sec to pass a telegraph post, then the length of the train is?