document.write( "Question 678245: \n" ); document.write( "
Algebra.Com's Answer #421221 by pmatei(79)\"\" \"About 
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If x is the amount she invested at 5%, than 5x (5 times x) is the amount she invested at 8%.\r
\n" ); document.write( "\n" ); document.write( "\"x%2A%285%2F100%29\" is what she earns from the 5% investment, and \"5x%2A%288%2F100%29\" is what she earns from the 8% investment. Thus you can write:\r
\n" ); document.write( "\n" ); document.write( "\"x%2A%285%2F100%29+%2B+5x%2A%288%2F100%29+=+3150\"\r
\n" ); document.write( "\n" ); document.write( "\"x%2F20+%2B+8x%2F20+=3150\"\r
\n" ); document.write( "\n" ); document.write( "\"9x%2F20+=+3150\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+3150%2A20%2F9\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+7000\"\r
\n" ); document.write( "\n" ); document.write( "Thus the woman invested $7,000 at 5% and $35,000 at 8%.
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