Question 354876
Let {{{A}}} be the amount of 6% solution, {{{B}}} the amount of 8% solution.
1.{{{A+B=1}}}
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{{{6A+8B=6.8(1)}}}
2.{{{3A+4B=3.4}}}
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Multiply eq. 1 by -3 and add to eq. 2 to eliminate {{{x}}}.
{{{-3A-3B+3A+4B=-3+3.4}}}
{{{highlight(B=0.4)}}} or {{{400}}} ml
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{{{A+0.4=1}}}
{{{highlight(A=0.6)}}}liter or {{{600}}}ml