A train covers a distance of 12 km in 10 min. If it takes 15 sec to pass a telegraph post, then the length of the train is?  Choose the correct choice from the following choices
A) 250 m B) 300 m C) 120 m D) 200 m E) 166 m
Speed = (12/10 * 60) km/hr   = (72 * 5/18) m/sec   = 20 m/sec.   Length of the train   = 20 * 15= 
<gadget id="calculator">20 * 15</gadget>
<output>300</output>
300 m.   Answer:300 m
<result>B</result>
A train covers a distance of 12 km in 10 min. If it takes 15 sec to pass a telegraph post, then the length of the train is?