SOLUTION: Jim's speedboat can travel 19 miles upstream against a 3 mph current in the same amount of time it travels 21 miles downstream with a 3 mph current speed. Find the speed, in miles

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Jim's speedboat can travel 19 miles upstream against a 3 mph current in the same amount of time it travels 21 miles downstream with a 3 mph current speed. Find the speed, in miles       Log On

The time equation is

 = 


19*(r+3) = 21*(r-3)

19r + 57 = 21r - 63

57 + 63 = 21r - 19r

120 = 2r

r =  = 60.


Answer.  60 mph.