Question 955698
___________________speed___________time___________distance
bus________________r_______________3_______________(r)(3)
bus________________r+10____________3_______________(r+10)(3)
Total______________________________________________810


{{{(3r+3r+30)=810}}}


{{{6r+30=810}}}
{{{r+5=810/5}}}
{{{r=810/5-5}}}
{{{r=162-5}}}
{{{r=177}}} and faster bus was {{{187}}}