document.write( "Question 948315: Dr Patel won a prize for his work. He invested part of the money in a certificate of deposit at 4% and $3000 more than that amount in a bond paying 6%. His annual interest income was $780. How much did Dr Patel invest at each rate?\r
\n" ); document.write( "\n" ); document.write( "I have tried 4x+6x(3000)=780
\n" ); document.write( "I came up with 4% was 3500 and 6% was 7500. \r
\n" ); document.write( "\n" ); document.write( "Thank you for your assistance in showing me what step I am missing in this word problem.
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Algebra.Com's Answer #578798 by Fombitz(32388)\"\" \"About 
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He invested x at 4% and x+3000 at 6%.
\n" ); document.write( "\"0.04x%2B0.06%28x%2B3000%29=780\"
\n" ); document.write( "\"0.04x%2B0.06x%2B180=780\"
\n" ); document.write( "\"0.1x=600\"
\n" ); document.write( "\"x=6000\" at 4%
\n" ); document.write( "So then,
\n" ); document.write( "\"x%2B3000=9000\" at 6%\r
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