document.write( "Question 45813: A $98,000 trust is to be invested in bonds paying 6%, CDs paying 5%, and mortgages paying 7%. The sum of the bond and CD investment must equal the mortgage investment. to earn $6130 annual income from the investment, how much should the bamk invest in bonds? \n" ); document.write( "
Algebra.Com's Answer #30422 by venugopalramana(3286)\"\" \"About 
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A $98,000 trust is to be invested in bonds paying 6%, CDs paying 5%, and mortgages paying 7%. The sum of the bond and CD investment must equal the mortgage investment. to earn $6130 annual income from the investment, how much should the bamk invest in bonds?
\n" ); document.write( "LET BONDS INVESTMENT=B
\n" ); document.write( "...CD.....=C
\n" ); document.write( "....MORTGAGE...=M
\n" ); document.write( "B+C+M=98000........I
\n" ); document.write( "B+C=M........B+C-M=0......II
\n" ); document.write( "EQN.I-EQN.II
\n" ); document.write( "2M=98000
\n" ); document.write( "M=49000
\n" ); document.write( "B+C=49000.......B=49000-C.................III
\n" ); document.write( "INTEREST ON BONDS =B*6/100=0.06B
\n" ); document.write( "....CD...=0.05C
\n" ); document.write( ".....M.....=0.07M
\n" ); document.write( "TOTAL INTEREST =0.06B+0.05C+0.07M=6130.........IV
\n" ); document.write( "0.06(49000-C)+0.05C+0.07*49000=6130
\n" ); document.write( "0.01C=49000(0.06+0.07)-6130=6370-6130=240
\n" ); document.write( "C=24000
\n" ); document.write( "B=49000-24000=25000
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