Question 1118703
k and j
Karen and Jill


{{{k=j+2.5j=3.5j}}}
and {{{k+j=49}}}



{{{j=49-k}}}
{{{3.5*(49-k)=k}}}
{{{3.5*49-3.5k=k}}}
{{{3.5*49=4.5k}}}
{{{k=(3.5*49)/4.5}}}

{{{highlight(k=38&1/2)}}}
Recheck for possible mistakes.




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If Karen were 2.5 TIMES AS OLD as Jill,... then
{{{k=2.5j}}}
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{{{j+k=49}}}
{{{k=2.5(49-k)}}}
{{{k=2.5*49-2.5k}}}
{{{3.5k=2.5*49}}}
{{{k=35}}}