Question 1130749
speeds 
r, bus going west
r+12, but going east


Speed at which they move way from each other
2r+12


Time of travel, 5 hours plus 3/10 of an hour


{{{(2r+12)*(5.3)=519.4}}}
-
{{{2r+12=519.4/5.3}}}

{{{2r=519.4/5.3-12}}}

{{{r=519.4/(2*5.3)-6}}}

{{{highlight_green(r=519.4/10.6-6)}}}


{{{system(highlight(r=43),highlight(r+12=55))}}}

Westbound bus, 43 mph
Eastbound bus, 55 mph