Problema Solution
the current of a river moves at 3mph. it takes a boat a total of 3 hours to travel 12 miles upstream against the current and return the same distance traveling downstream with the current. What is the boats rate in still water
Answer provided by our tutors
the boats rate in still water: x
So the equation is
12/(x-3) + 12/(x+3) = 3
So
x = 9
So
the boats rate in still water is 9 mph