document.write( "Question 50232: \"If Ben invests $4000 at 4% interest per year, how much additional money must he invest at 5 1/2% annual interest to ensure that the interest he receives each year is 4 1/2 % of the total amount invested?\"\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "I really just don't understand this question at all! I tried the (P)(R)(T) = I formula and am just stumped!\r
\n" );
document.write( "\n" );
document.write( "Any help would be really appreciated!\r
\n" );
document.write( "\n" );
document.write( "L.Nytz \n" );
document.write( "
Algebra.Com's Answer #33364 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! \"If Ben invests $4000 at 4% interest per year, how much additional money must he invest at 5 1/2% annual interest to ensure that the interest he receives each year is 4 1/2 % of the total amount invested?\" \n" ); document.write( "----------------\r \n" ); document.write( "\n" ); document.write( "Let \"x\" be the amount of additional money he needs to invest. \n" ); document.write( "EQUATION: \n" ); document.write( "interest + interest = interest \n" ); document.write( "0.04(4000) + 0.055x = 0.045(4000+x) \n" ); document.write( "160 +0.055x = 180+0.045x \n" ); document.write( "0.010x=20 \n" ); document.write( "x= $2000 (amount of additional money he needs to inverst at 5 1/2 %) \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |