document.write( "Question 64034: Paul invested $12,000 some at 14% annual interest and the rest at 10%. Last year he earned $1632 in interest. How much money was invested at each rate?\r
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document.write( "Thanks so much for any help. \n" );
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Algebra.Com's Answer #44702 by jai_kos(139) ![]() You can put this solution on YOUR website! suppose $x is invested at 14% annual interest \n" ); document.write( " interest after 1 year = $(14x)/100 \n" ); document.write( " \n" ); document.write( "rest $(12000-x)at 10% annual interest \n" ); document.write( " interest after 1 year =$(12000-x)10/100 \n" ); document.write( " \n" ); document.write( " by the problem 14x/100 + (12000-x)10/100 =1632 \n" ); document.write( " or 14x/100 + 1200 -10x/100 =1632 \n" ); document.write( " or 4x/100=1632-1200=432 \n" ); document.write( " or x/25=432 \n" ); document.write( " or x=432*25= 10800\r \n" ); document.write( "\n" ); document.write( "ans: $10800 is invested at 14% \n" ); document.write( " $(12000-10800)=$1200 is invested at 10% \n" ); document.write( " |