Question 1195060
x at 11%
20000-x at 2%


{{{0.11x+0.02(20000-x)=1210}}}---------simplify and solve.


{{{0.11x+0.02*20000-0.02x=1210}}}

{{{(0.11-0.02)x=1210-0.02*20000}}}

{{{x=(1210-0.02*20000)/(0.11-0.02)}}}

{{{x=(1210-400)/0.09}}}

{{{x=810/0.09}}}
You finish.