Question 912784
Let d be the distance each car goes for making the trip.


t, the time in hours for car C to make trip of distance d
d, the trip distance each of the two cars makes


____________________rate________time________distance
J___________________50__________t+5/6_______d
C___________________60__________t___________d


Notice 50 minutes is {{{50/60=5/6}}} hours, and you can understand that time for C is less than time for J, consistent with how their rates contrast.


Uniform Rates basic rule for travel, RT=D rate time distance.