A train covers a distance of 12 km in 10 min. If it takes 2 sec to pass a telegraph post, then the length of the train is? Choose the correct answer
A) 40  B) 80  C) 20  D) 100  E) 60
Speed = (12/10 * 60) km/hr = (72 * 5/18) m/sec = 20 m/sec.   Length of the train = 20 * 2= 
<gadget id="calculator">20 * 2</gadget>
<output>40</output>
40 m.   40nswer: Option 40
<result>A</result>
A train covers a distance of 12 km in 10 min. If it takes 2 sec to pass a telegraph post, then the length of the train is?