A train covers a distance of 12 km in 5 min. If it takes 6 sec to pass a telegraph post, then the length of the train is?	Choose the most appropriate option
A) 120m
B) 180m
C) 240m
D) 220m
E) 280m
Speed = (12/5 * 60) km/hr = (144 * 5/18) m/sec = 40 m/sec.   Length of the train = 40 * 6= 
<gadget id="calculator">40 * 6</gadget>
<output>240</output>
240 m.   ANSWER:240m
<result>C</result>
A train covers a distance of 12 km in 5 min. If it takes 6 sec to pass a telegraph post, then the length of the train is?