document.write( "Question 232262: the computer club invested $2200, part at 4.5% interest and the rest at 7%. the total annual interest earned was $144. how much was invested at each rate? \n" ); document.write( "
Algebra.Com's Answer #171723 by rfer(16322)\"\" \"About 
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.045x+.07(2200-x)=144
\n" ); document.write( ".045x+154-.07x=144
\n" ); document.write( "-.025x=-10
\n" ); document.write( "x=$400 at 4.5%
\n" ); document.write( "$1800 at 7%
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