document.write( "Question 1135080: A professor wants to supplement her pension with investment interest. If she invests $28,000 at 7% interest, how much more would she have to invest at 8% to achieve a goal of $4,200 per year in supplemental income? \n" ); document.write( "

Algebra.Com's Answer #752626 by ikleyn(52794) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "

\r\n" );
document.write( "She should invest at 8% the amount\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "     = 28000 dollars,\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "which is precisely  THE SAME AMOUNT as she invested at 7%.     ANSWER\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "CHECK.  0.07*28000 + 0.08*28000 = 4200 dollars.   ! The answer is correct !\r\n" );
document.write( "

\r
\n" ); document.write( "\n" ); document.write( "Answered and solved.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );