Question 1197545

let Dupe's present age be {{{x}}} and  Seun's present age {{{y}}}

if Dupe's present age is {{{12}}} years older than seun's present age, we have

{{{x=y+12}}}......eq.1

if ten years ago, Dupe was three times seun's age, we have


{{{x-10=3(y-10)}}}.......eq.2, substitute {{{x}}} from eq.1

{{{y+12-10=3(y-10)}}}

{{{y+2=3y-30}}}

{{{30+2=3y-y}}}

{{{32=2y}}}

{{{y=16}}}

go to

{{{x=y+12}}}......eq.1, substitute {{{y}}}

{{{x=16+12}}}

{{{x=28}}}


so, the present age of Dupe is {{{28}}} and Seun is {{{16}}}