Question 887696
That means you want 50% pepper.


{{{highlight_green((9+x)/(60+x)=1/2)}}}; because 50% is {{{1/2}}}, and adding pepper also adds to the resulting amount of the mixture.  x is the pounds of pepper to add.  Solve for x.


{{{2(x+9)=x+60}}}
{{{2x+18=x+60}}}
{{{x=60-18}}}
{{{highlight(x=42)}}}