document.write( "Question 456738: Equal amounts are invested at 5%, 7%, and 6% annual interest. If the three investments yield a total of $810 annual interest, find the total investment \n" ); document.write( "
Algebra.Com's Answer #313415 by richwmiller(17219)\"\" \"About 
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y=3x
\n" ); document.write( ".05x+.07x+.06x=810
\n" ); document.write( "x=4500
\n" ); document.write( "y=13500
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