Question 842331
"... jumps on the freeway at noon."



__________________speed________time________distance
BMW________________r___________t+1/2
Tesla_____________r+10__________t


You know from time point information, {{{t+1/2=4&1/2}}};
{{{t=4}}}.  The data table can be this:


__________________speed________time________distance
BMW________________r___________4.5__________r(4.5)
Tesla_____________r+10__________4__________(r+10)*4


The question means, what is r if the two distances are equal?
{{{highlight_green((4.5)r=4(r+10))}}}
{{{4.5r=4r+40}}}
{{{(0.5)r=40}}}
BMW Speed: {{{highlight(r=80)}}}
Tesla Speed: {{{highlight(90)}}}