<PRE><B>Question 762203</B>
Hello, 
A couple ways of figuring this out. 
The most basic is keep adding each one until they both are the same. 
For example:
40+40+40+40++40+40=240
48+48+48+48+48=240
There we go, in 240 seconds they will both reach the starting point simultaneously.
Make sense?
RJ
www.math-unlock.com </PRE>