document.write( "Question 442703: If $4,500.00 is investment at 4% simple interest, how much needs to be invested at 10% simple interest so the total interest per year is $730.00.
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document.write( "You need to invest ? at 10% simple interest. \n" );
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Algebra.Com's Answer #305392 by mananth(16949) You can put this solution on YOUR website! $4500 at4%\r \n" ); document.write( "\n" ); document.write( "interest = 0.04*4500 \n" ); document.write( "Interest = $180\r \n" ); document.write( "\n" ); document.write( "Total interest required = $ 730 \n" ); document.write( "730-180= $550\r \n" ); document.write( "\n" ); document.write( "550 = x*0.1*1 \n" ); document.write( "550/0.1=x \n" ); document.write( "= $5500 @ 10 %\r \n" ); document.write( "\n" ); document.write( "CHECK\r \n" ); document.write( "\n" ); document.write( "5500*0.1+4500*0.04 = $730\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |