2 hours after a freight train leaves Delhi a passenger train leaves the same station travelling in the same direction at an average speed of 16 km/hr. After travelling 4 hrs the passenger train overtakes the freight train. The average speed of the freight train was? Choose one.
A) 30  B) 40  C) 58  D) 60  E) 11
let the speed of freight train be xkm/hr   distance covered by freight train in 6 hours=distance covered by passenger train in 4 hrs   6x=16*4   x=10.66   x=11 km/hr   ANSW11R:11
<result>E</result>
2 hours after a freight train leaves Delhi a passenger train leaves the same station travelling in the same direction at an average speed of 16 km/hr. After travelling 4 hrs the passenger train overtakes the freight train. The average speed of the freight train was?