document.write( "Question 154092: Please help me solve:\r
\n" ); document.write( "\n" ); 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.
\n" ); document.write( "The amount invested at 8% is:
\n" ); document.write( "The amount invested in stock is:\r
\n" ); document.write( "\n" ); 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.
\n" ); document.write( "I tried to use this formula: .08x-0.3y=780 but then i got totally confused and stuck. Please help.
\n" ); document.write( "

Algebra.Com's Answer #113422 by checkley77(12844)\"\" \"About 
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( "
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