document.write( "Question 343332: A professor wants to supplement her pension with investment interest. If she invests $31,000 at 6% interest, how much more would she have to invest at 7% to achieve a goal of $2,560 per year in supplemental income?
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Algebra.Com's Answer #245681 by mananth(16946)\"\" \"About 
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31000 at 6%
\n" ); document.write( "so interest = 0.06 * 31000
\n" ); document.write( "=$1860
\n" ); document.write( "Total interest to be earned = $2560
\n" ); document.write( "Balance to be earned = $2560-$1860
\n" ); document.write( "=$700
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\n" ); document.write( "I= p*r*t
\n" ); document.write( "700=p*0.07*1
\n" ); document.write( "700/0.07 =p
\n" ); document.write( "p= $10,000 This is the investment required.
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