Speed of a boat is 3 km/hr in still water and the speed of the stream is 1 km/hr. If the boat takes 9 hours to go to a place and come back, then what is the distance (in km) of the place?

Speed of a boat is 3 km/hr in still water and the speed of the stream

1.	Speed of a boat is 3 km/hr in still water and the speed of the stream is 1 km/hr. If the boat takes 9 hours to go to a place and come back, then what is the distance (in km) of the place?
A.	12
B.	16
C.	18
D.	9
Answer» B. 16