Question 841687
Analyze the description and fill a data table:



_______________________rate_________time___________distance
1PM St. L to Chgo______65 __________t+1_____________
2PM Chgo to St. L______55___________t_______________



They pass each other when the sum of their distances is 305 miles.
Understand, the "t+1" is not because of "1PM", but because of this car traveling for one hour longer than the 2PM departure car.


Use the travel equation R*T=D to determine expressions for the distances of each car.


_______________________rate_________time___________distance
1PM St. L to Chgo______65 __________t+1_____________65(t+1)
2PM Chgo to St. L______55___________t_______________55t
TOTAL______________________________________________305


The total distance gives the equation to solve for {{{t}}}.  You can figure the time in the day using {{{t}}}, once you solve for it.