A train covers a distance of 6 km in 10 min. If it takes 12 sec to pass a telegraph post, then the length of the train is? Select
A) 120m  B) 180m  C) 240m  D) 220m  E) 280m
Speed = (6/10 * 60) km/hr = (36 * 5/18) m/sec = 10 m/sec.   Length of the train = 10 * 12= 
<gadget id="calculator">10 * 12</gadget>
<output>120</output>
120 m.   120mNSWER:120m
<result>A</result>
A train covers a distance of 6 km in 10 min. If it takes 12 sec to pass a telegraph post, then the length of the train is?