Question 1170600
r, Marivic
c, Michelle


{{{system(r=c+5,(r+3)(c-5)=90)}}}


{{{((c+5)+3)(c-5)=90}}}

{{{(c+8)(c-5)=90}}}-----------two factors differ by 13?

{{{90=3*30=highlight_green(5*18)}}}


{{{system(c-5=5,c+8=18)}}}
{{{highlight(c=10)}}}-----------Michelle's age now.
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Marivic is {{{highlight(15)}}}.