document.write( "Question 380894: an executive invests 30,000,some at 10% and some at 5%. if she receives an annual return of 2200, how much is invested at 10%? \n" ); document.write( "
Algebra.Com's Answer #270298 by rfer(16322)\"\" \"About 
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0.1x+0.05(30000-x)=2200
\n" ); document.write( "0.1x+1500-0.05x=2200
\n" ); document.write( "0.05x=2200-1500
\n" ); document.write( "0.05x=700
\n" ); document.write( "x=14,000 at 10%
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