Question 910407
Re TY
Note:  one hour and 15 mins is 1 1/4hr  or (5/4) hr
r+c = 8 mph  {{{10mi/(5/4)hr}}}
r-c = 5/2  {{{10mi/(4hr))}}}
2r = 21/2
r = 21/4 mph  0r  5 1/4 mph
c = 11/4 mph  0r 2  3/4 mph