Question 1065743
{{{x}}}= distance walked by the son
{{{2x}}}= distance walked by the father
Between the two of them,
they covered the {{{1mile}}} distance twice.
So, {{{x+2x=2miles}}}
{{{3x=2miles}}}
{{{x=2/3}}}{{{miles}}}
{{{2x=4/3}}}{{{miles}}}
The father walked {{{highlight(4/3)}}} of a mile
( {{{1}}} mile forward and {{{1/3}}} mile back towards his son).
The son walked {{{2/3}}} of a mile in one direction.