document.write( "Question 726146: \r
\n" ); document.write( "\n" ); document.write( "two investments totalling $55,000 produce an annual income of $2825. One investment yields 9% a year while the other yields 4% a year how much is invested at each rate? If i use the formula I=p.r.t I don't know what the principal or the rate is can you help me figure this out please?
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Algebra.Com's Answer #444493 by checkley79(3341)\"\" \"About 
You can put this solution on YOUR website!
.09x+.04(55,000-x)=2,825
\n" ); document.write( ".09x+2,200-.04x=2,825
\n" ); document.write( ".05x=2,825-2,200
\n" ); document.write( ".05x=625
\n" ); document.write( "x=625/.05
\n" ); document.write( "x=$12,500 invested @ 9%.
\n" ); document.write( "55,000-12,500=$42,500 invested @ 4%.
\n" ); document.write( "Proof:
\n" ); document.write( ".09*12,500+.04*42,500=2,825
\n" ); document.write( "1,125+1,700=2,825
\n" ); document.write( "2,825=2,825
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