Question 1184864

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Two years ago, Zarah was three times as old as her nephew was then.  In five years, she will be only two times as old as her nephew.  how old is she?
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n, age of nephew
n-2, nephew two years ago
z, Zarah today


(not the only way)


{{{system(z-2=3(n-2),z+5=2(n+5))}}}

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{{{system(z=3n-6+2,z=2n+10-5)}}}

{{{z=3n-4,z=2n+5}}}

{{{3n-4=2n+5}}}

{{{n=9}}}

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{{{z=3n-4=27-4}}}
{{{highlight(z=23)}}}