Question 480792
Let {{{x}}} is the speed of Mike's bus, then {{{(x+20)}}} is Adam's bus speed
After 3 hours Mike's bus was in {{{3x}}}miles from a bus terminal, Adam's bus was in {{{3(x+20)}}}miles from a bus terminal
{{{3x+3(x+20)=270}}}
{{{3x+3x+60=270}}}
{{{6x=270-60}}}
{{{6x=210}}}
{{{x=210/6}}}
{{{x=35}}}mph Mike's bus speed
{{{35+20=55}}} mph Adam's bus speed