Question 357764


Let A be the amount of 10% red and B the amount of 65% red.  
1.{{{A+B=50}}}
.
.
{{{10A+65B=27(50)}}}
2.{{{10A+65B=1350}}}
Multiply eq. 1 by (-10) and add to eq. 2,
{{{-10A-10B+10A+65B=-500+1350}}}
{{{55B=850}}}
{{{highlight(B=170/11)}}}oz.
Then from eq. 1,
{{{A+170/11=50}}}
{{{A=550/11-170/11}}}
{{{highlight(A=380/11)}}}oz.