Question 715950: A boat is rowed 10miles downstream in 2 hours. Then rowed 10 miles against current in 2.5 hours. What is the rate of the current? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A boat is rowed 10miles downstream in 2 hours. Then rowed 10 miles against current in 2.5 hours. What is the rate of the current?
----
Down rate = 10 miles/2 hrs = 5 mph
----
Up rate = 10 miles/2.5 hrs = 4 mph
======
b + c = 5 mph
b - c = 4 mph
------
2b = 9
b = 4.5 mph (speed of the boat in still water)
-----
Solve for "c":
b + c = 5
4.5 + c = 5
c = 0.5 mph (speed of the current)
====================================
Cheers,
Stan H.
====================
(