document.write( "Question 909867: A man invested one fifth of his money at 4%, half of his money at 5%, and the rest of his money at 3.5%. If his total annual investment income was $870, how much had he invested? \n" ); document.write( "
Algebra.Com's Answer #552081 by ewatrrr(24785)\"\" \"About 
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x amount invested
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\n" ); document.write( "\".04%281%2F5%29x+%2B+.05%281%2F2%29x+%2B+.035%289%2F5%29x+=+870\" |Multiplying thru by 10 so as all denominators = 1
\n" ); document.write( " .08x + .25x + .035(18)x = 8700, Solve for x
\n" ); document.write( "x = 8700/.99, amount invested
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