Question 885804
"In the time it takes...", some time t.



__________________rate________time________distance
FRED______________r-5_________t___________36
SAMANTHA__________r___________t___________51


{{{RT=D}}} rate time distance.
{{{T=D/R}}} if divide both sides by R.


Fred's time is the same as Samantha's time.
{{{highlight_green(36/(r-5)=51/r)}}}
Solve for r.  Compute r-5.