document.write( "Question 840879: Mr. Decker invested a certain amount of money in bonds yielding 3% a year and twice as much in bonds yielding 5% a year. If his total annual income from the two investments was $208, how much did he invest in
\n" );
document.write( "each type of bond?\r
\n" );
document.write( "\n" );
document.write( "Please explain to me how to sole this!!
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #506448 by hamsanash1981@gmail.com(151)![]() ![]() ![]() You can put this solution on YOUR website! let the amount invested in bonds yielding 3% be x \n" ); document.write( "then twice as much invested in bonds yielding 5% will be 2x. \n" ); document.write( "the number of years is 1. \n" ); document.write( "simple interest for 3% bond = (x*1*3)/100 => 3x/100 \n" ); document.write( "simple interest for 5% bond = (2x*1*5)/100 => 10X/100 \n" ); document.write( "Given that the total income of the investments was 208, then \n" ); document.write( "3X/100 + 10X/100 = 208\r \n" ); document.write( "\n" ); document.write( "3x+10x = 20800 \n" ); document.write( "13x = 20800 \n" ); document.write( "x=1600 \n" ); document.write( "therefore the money invested at 3% interest is $1,600 and money invested in 5% is 2*1600 = $3,200. \n" ); document.write( " \n" ); document.write( " |