Question 182663
let the age of the father and son be f and s respectively
:
{{{highlight(f)=red(3s)}}}.......eq 1
f+15=2(s+15)...eq 2
:
take f's value of 3s from eq 1 and plug it into eq 2
:
3s+15=2s+30
:
{{{highlight(s=15)}}}age of son
:
{{{highlight(f)=red(3s)=3(15)=highlight(45)}}}age of father