document.write( "Question 154092: Please help me solve:\r
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document.write( "Susan Maricano invested part of her $18,000 bonus in a fund that paid an 8% profit and invested the rest in stock that suffered a 3% loss. Find the amount of each investment if her over all net profit was $780.
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document.write( "The amount invested at 8% is:
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document.write( "The amount invested in stock is:\r
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document.write( "This is what I have: her net profit is 780 total amount investing is 18,000 profit of 8% and loss of 3%. x=8% and y=-3.
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document.write( "I tried to use this formula: .08x-0.3y=780 but then i got totally confused and stuck. Please help. \n" );
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Algebra.Com's Answer #113422 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! .08X-.03(18,000-X)=780 \n" ); document.write( ".08X-540+.03X=780 \n" ); document.write( ".11X=780+540 \n" ); document.write( ".11X=1,320 \n" ); document.write( "X=1,320/.11 \n" ); document.write( "X=$12,000 AMOUNT INVESTED @ 8%. \n" ); document.write( "18,000-12,000=$6,000 INVESTED @ 3% \n" ); document.write( "PROOF: \n" ); document.write( ".08*12,000-.03*6,000=780 \n" ); document.write( "960-180=780 \n" ); document.write( "780=780 \n" ); document.write( " |