Question 970057
Let X be the amount of 5% solution and Y be the amount of 2% solution.
Total volume equation:
{{{X+Y=60}}}
Total concentration equation:
{{{0.05X+0.02Y=0.03(60)}}}
{{{5X+2Y=180}}}
Multiply the first equation by 2 and subtract from the second,
{{{5X+2Y-2X-2Y=180-120}}}
{{{3X=60}}}
{{{X=20}}}{{{ml}}}
So then,
{{{20+Y=60}}}
{{{Y=40}}}{{{ml}}}