If at 4am there is a robbery in police man's house and the thief ran at a speed of 40 kph . the police man get to know about it at 7am and started running towards him at the speed of 50 kph with his dog which is running with a speed of 60 kph. the movement of dog is such that if it catch the thief it will return to the police and then to the thief and so on.what is the total distance traveled by the dog and how many such lap the dog ran between the police and the thief?
