<PRE><B>Question 834987</B>
Chad rides 2 hours total on a bicycle trip into the country and back. He rode out at the rate of 18 mph and returned at the rate of 22 mph. How far into the country did Chad ride.
-----
Out DATA:
rate = 18 mph ; distance = x miles ; time = d/r = x/18 hrs
------
Back DATA:
rate = 22 mph ; distance = x miles ; time = d/r = x/22 hrs
------------------------
Equation:
time + time = 2 hours
x/18 + x/22 = 2 hrs
-------
(22x + 18x) = 18*22*2
------
40x = 792
x = 19.8 miles (distance into the country)
-----------------
Cheers,
Stan H.
===================
</PRE>