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?  Select:
A) 298 m  B) 188 m  C) 240 m  D) 178 m  E) 189 m
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:240 m
<result>C</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?