document.write( "Question 443238: two investments are made totaling $10,000. In one year these investments
\n" ); document.write( "yield $650 in simple interest. Part of the $10,000 in invested at 5 1/2%, and
\n" ); document.write( "the rest at 6 3/4%. How much more money is invested at 6 3/4%? \n" ); document.write( "
Algebra.Com's Answer #305746 by stanbon(75887)\"\" \"About 
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two investments are made totaling $10,000. In one year these investments
\n" ); document.write( "yield $650 in simple interest. Part of the $10,000 in invested at 5 1/2%, and
\n" ); document.write( "the rest at 6 3/4%. How much more money is invested at 6 3/4%?
\n" ); document.write( "----
\n" ); document.write( "2-variable solution:
\n" ); document.write( "Quantity Eq. :: x + y = 10,000
\n" ); document.write( "Interest Eq. ::0.055x + 0.0675y = 650
\n" ); document.write( "-----------------------------------
\n" ); document.write( "Multiply 1st by 550
\n" ); document.write( "Multiply 2nd by 10000
\n" ); document.write( "-------------------------
\n" ); document.write( "550x + 550y = 550*10,000
\n" ); document.write( "550x + 675y = 6400000
\n" ); document.write( "----------------------------------------
\n" ); document.write( "Subtract and solve for \"y\":
\n" ); document.write( "125y = 9000000
\n" ); document.write( "y = $7200 (amt invested at 6 3/4%)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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