document.write( "Question 295429: A businessman has three times as much money invested at 3% as he does at 4.5%. The income from both investments for a year is $675. How much is invested at each rate.
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #212898 by stanbon(75887) ![]() You can put this solution on YOUR website! A businessman has three times as much money invested at 3% as he does at 4.5%. The income from both investments for a year is $675. How much is invested at each rate. \n" ); document.write( "----------------------------- \n" ); document.write( "Equations: \n" ); document.write( "Quantity: x = 3y \n" ); document.write( "Interest:0.03x + 0.045y = 675 \n" ); document.write( "-------------------------------- \n" ); document.write( "Substitute for \"x\": \n" ); document.write( "0.03(3y) + 0.045y = 675 \n" ); document.write( "--- \n" ); document.write( "Multiply thru by 1000: \n" ); document.write( "3(30y) + 45y = 675000 \n" ); document.write( "135y = 675000 \n" ); document.write( "y = $5000.00 \n" ); document.write( "x = (1/3)(5000) = $1666.67 \n" ); document.write( "================================ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |