Question 954162

Suppose Josef's present age is j and suzy's present age is s.

According to qus....
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   {{{j=(s/7)}}}
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After 21 years their age will be related by...


{{{(j+21)=((s+21)/6)+17}}}

Putting {{{j=(s/7)}}}

{{{(s/7)+21=(S/6)+(21/6)+17}}}

{{{(s/7)+4=(s/6)+(7/2)}}}
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{{{s=21}}}
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Hence,  Josef's present age {{{j=(21/7)}}}
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{{{J=3}}}

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Ans.....