A train covers a distance of 12 km in 10 min. If it takes 3 sec to pass a telegraph post, then the length of the train is? Choose the correct choice from the following answers:
A) 70m  B) 16 m  C) 60 m  D) 80 m  E) 88 m
Speed = (12/10 * 60) km/hr = (72 * 5/18) m/sec   = 20 m/sec.   Length of the train = 20 * 3= 
<gadget id="calculator">20 * 3</gadget>
<output>60</output>
60 m.   Answer: 60 m
<result>C</result>
A train covers a distance of 12 km in 10 min. If it takes 3 sec to pass a telegraph post, then the length of the train is?