Question 259556
Let A be the amount of 1% and B be the amount of 5%.
Volume equation : {{{A+B=1}}}
Concentration equation: {{{A+5B=2(A+B)=2}}}
From the first equation,
{{{A=1-B}}}
Substitute in the second equation,
 {{{A+5B=2}}}
{{{(1-B)+5B=2}}}
{{{4B=1}}}
{{{B=1/4}}}
Then
{{{A=1-B}}}
{{{A=1-1/4}}}
{{{A=3/4}}}
3/4 oz of 1% and 1/4 oz of 2%.