<PRE><B>Question 319676</B>
A plane travels from Chicago to Los Angeles at 560mph and an hour later a plane travels from Los Angeles to Chicago at 640mph. 
-------------------------------------------------------
It is 1800 miles from Chicago to Los Angeles. How long will it take for the first plane to pass the second plane? 
----
Chi to LA DATA:
rate = 560 mph ; time = x hrs ; distance = 560x miles
---
LA to Chi DATA:
rate = 640 mph ; time = x-1 hrs ; distance = 640x-640 miles
-----------------
Solve: 560x + 640x-640 = 1800
1200x = 2440
x = 2.0333 hrs (passing time for Chi to LA Plane)
-----


How far from Chicago will they be at that time?
2.0333*560 = 1138.67 miles
================================
Cheers,
Stan H.
==================
</PRE>