document.write( "Question 724128: A certain amount is invested at 9% and 12,000 more than that amount is invested at 10%. How much is invested at each rate if the total income is 10,130? \n" ); document.write( "
Algebra.Com's Answer #443604 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! A certain amount is invested at 9% and 12,000 more than that amount is invested at 10%. How much is invested at each rate if the total income is 10,130? \n" ); document.write( ". \n" ); document.write( "Let x = amount ($) invested at 9% \n" ); document.write( "then \n" ); document.write( "x+12000 = amount ($) invested at 10% \n" ); document.write( ". \n" ); document.write( ".09x + .10(x+12000) = 10130 \n" ); document.write( ".09x + .10x+1200 = 10130 \n" ); document.write( ".19x+1200 = 10130 \n" ); document.write( ".19x = 8930 \n" ); document.write( "x = 8930/.19 \n" ); document.write( "x = $47000 (invested at 9%) \n" ); document.write( ". \n" ); document.write( "Amount invested at 10%: \n" ); document.write( "x+12000 = 47000+12000 = $59000 \n" ); document.write( " \n" ); document.write( " |