Runnin Man

• A man is running on a bridge at 5KMpH
• After he has crossed 3/8th the distance of the bridge, he realizes that a train is coming behind him.
• If he continues to run, then he & the train will reach the end of the bridge at the same time.
• If he turns back & starts running, then he & the train will reach the start of the bridge at the same time.
• What is the speed of the train?