document.write( "Question 668425: You have already invested $550 in a stock with an annual return of 11%. How much more should be invested at 15% so that the return on the total investment is 12%?
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Algebra.Com's Answer #415530 by stanbon(75887)\"\" \"About 
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You have already invested $550 in a stock with an annual return of 11%. How much more should be invested at 15% so that the return on the total investment is 12%?
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\n" ); document.write( "Equation:
\n" ); document.write( "interest + interest = interest
\n" ); document.write( "0.11*550 + 0.15x = 0.12(550+x)
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\n" ); document.write( "11*550 + 15x = 12*550 + 12x
\n" ); document.write( "3x = 550
\n" ); document.write( "x = 183.33 (amt. to be invested at 15%)
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\n" ); document.write( "Cheers,
\n" ); document.write( "stan H.
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