A boat takes five times the time in moving a certain distance upstream than downstream. Find the ratio of speed of boat in still water to that of speed of current.
1
3 : 2
2
3 : 4
3
5 : 2
4
3 : 5
A boat takes five times the time in moving a certain distance upstream than downstream. Find the ratio of speed of boat in still water to that of speed of current.