Question 1101901
40 father
8 child (son)
x, how many years ago


{{{(40-x)(8-x)=105}}}------(Age difference was still 32).


{{{(3)(35)=105}}}
or
{{{(35*3)=105}}}


{{{3=8-x}}} using the smaller number
{{{-x=3-8}}}
{{{highlight(x=5)}}}---------------five years ago