Question 952646
Rate x Time= Distance
{{{R[1]*3=D[1]}}}
{{{R[2]*3=D[2]}}}
{{{R[1]=R[2]+5}}}
So then,
{{{D[1]+D[2]=405}}}
{{{R[1]*3+R[2]*3=405}}}
{{{R[1]+R[2]=135}}}
Substituting,
{{{R[2]+5+R[2]=135}}}
{{{2R[2]=130}}}
{{{R[2]=65}}}{{{mph}}}
and
{{{R[1]=65+5}}}
{{{R[1]=70}}}{{{mph}}}