A train covers a distance of 18 km in 10 min. If it takes 6 sec to pass a telegraph post, then the length of the train is?	Choose the correct choice:  A) 120m  B) 180m  C) 240m  D) 220m  E) 280m
Speed = (18/10 * 60) km/hr = (108 * 5/18) m/sec = 30 m/sec.   Length of the train = 30 * 6= 
<gadget id="calculator">30 * 6</gadget>
<output>180</output>
180 m.   ANSWER:180m
<result>B</result>
A train covers a distance of 18 km in 10 min. If it takes 6 sec to pass a telegraph post, then the length of the train is?