<PRE><B>Question 675221</B>
Two brothers leave from the same point driving in opposite directions, the first brother driving at 60 miles per hour and the second driving at 45 mph. The first brother has a one hour head start. How long will they be able to talk on their car phones if the phones have a 260 mile-range?
----------------------------------
1st brother DATA:
rate = 60 mph ; time = x+1 hrs ; distance = rt = 60x+60 miles
---------------------
2nd brother DATA:
rate = 45 mph ; time = x hrs ; distance = rt = 45x miles
-----
Equation:
distance + distance = 260 miles
60x+60 + 45x = 260
105x = 200
x = 40/21 = 1.904 hrs = 1 hr 54 minutes 17 seconds
==============
Cheers,
Stan H.</PRE>