Solve the Problem. -Julie and Eric Row Their Boat (At a Constant Speed)45

Multiple Choice

Solve the problem.
-Julie and Eric row their boat (at a constant speed) 45 miles downstream for 5 hours, helped by the current. Rowing at the same rate, the trip back against the current takes 9 hours. Find the rate of the current.

A) 2 mph
B) 1.5 mph
C) 3 mph
D) 7 mph