document.write( "Question 564695: stanley invested $3900 in a mutual fund one year ago. during the year his fund increased in value by $339.30. what interest rate has stanleys investment earned? \n" ); document.write( "
Algebra.Com's Answer #365440 by josmiceli(19441)\"\" \"About 
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\"+339.3+%2F+3900+=+.087+\"
\n" ); document.write( "\"+.087+=+8.7%2F100+\"
\n" ); document.write( "His interest rate is 8.7%
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