<PRE><B>Question 889025</B>
t the time variable


______________speed________time________distance
NY to O_______450___________t___________450t
O to NY_______490___________t___________490t
Total Trip______________________________1300
Specified Incomplete_________________1300-125



The important detail to watch is that when the planes are 125 miles apart, the sum of their distances traveled is {{{1300-125=1175}}} miles.  The simpler detail is that the planes approach eachother at {{{450+490=940}}} miles per hour.


You would have the equation {{{highlight(450t+490t=1175)}}} and just solve for t in hours.</PRE>