Question 1128909
Tom, speed r
Melissa, speed r+10


Same time, x.


{{{system(rx=177,(r+10)x=207)}}}


{{{177/r=207/(r+10)}}}

-

{{{207r=177(r+10)}}}

{{{207r=177r+1770}}}

{{{30r=1770}}}

{{{r=177/3}}}

{{{highlight(r=59)}}}-------Tom's speed

{{{highlight(69)}}}--------Melissa's speed