Question 1122997
x of 10%
y of 65%


{{{system(x+y=100,(10x+65y)/100=35)}}}


{{{2x+13y=100*7}}}


{{{system(2x+13y=700,x+y=100)}}}


{{{11y=500}}}

{{{y=45&5/11}}}------the 65%
and
{{{x=54&6/11}}}------the 10%


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x of 10%
100-x of 65%
{{{10x+65(100-x)=35*100}}}
-
{{{2x+13(100-x)=700}}}
{{{2x+1300-13x=700}}}
{{{-11x=700-1300}}}
{{{11x=600}}}
{{{x=54.54545454}}}