document.write( "Question 1204184: sara has 80000 to invest. she invests part a5 %. a fourth this amount at 6%, and the blance at 7%.Her total annual income from interest is 4700. FInd the amount invested at each rate \n" ); document.write( "
Algebra.Com's Answer #840263 by MathLover1(20849)\"\" \"About 
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sara has \"80000\" to invest\r
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\n" ); document.write( "\n" ); document.write( "she invests \"x\" a \"5\" %\r
\n" ); document.write( "\n" ); document.write( "a \"%281%2F4%29x\" this amount at \"6\" %\r
\n" ); document.write( "\n" ); document.write( "and the blance at \"80000+-%28x%2B%281%2F4%29x%29+\" at \"+7\" %\r
\n" ); document.write( "\n" ); document.write( "\"0.05x%2B0.06%2A%281%2F4%29x%2B0.07%2880000+-%28x%2B%281%2F4%29x%29%29=4700\"\r
\n" ); document.write( "\n" ); document.write( "\"x=40000\"\r
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\n" ); document.write( "\n" ); document.write( "she invests \"40000\" a \"5\" %\r
\n" ); document.write( "\n" ); document.write( "a \"%281%2F4%2940000=10000\" this amount at \"6\" %\r
\n" ); document.write( "\n" ); document.write( "and the balance at \"80000+-%2840000%2B%281%2F4%2940000%29+=80000+-50000+=30000\" at \"+7\" %\r
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