Question 345292
Let A be the amount of 40% solution and B the amount of 25% solution.
Volume equation:
1.{{{A+B=136}}}
.
.
Concentration equation:
{{{40A+25B=33(136)}}}
2.{{{40A+25B=4488}}}
Multiply eq. 1 by (-40) and add to eq. 2,
{{{-40A-40B+40A+25B=-5440+4488}}
{{{-15B=-952}}}
{{{highlight(B=952/15)}}}liters
.
.
.
Then using eq. 1,
{{{A+952/15=136}}}
{{{A=2040/15-952/15}}}
{{{highlight(A=1088/15)}}} liters