document.write( "Question 1031393: Timmy has three times as much money invested at 5% bonds as he has in stocks paying 7%. If his annual income from the stocks and bonds is $158.40, how much has he invested in bonds?\r
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\n" ); document.write( "Timmy has three times as much money invested at 5% bonds as he has in stocks paying 7%. If his annual income from the stocks and bonds is $158.40, how much has he invested in bonds?
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Let amount invested in bonds and stocks, be B, and S, respectively
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document.write( "Then: B = 3S______ -------eq (i)
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document.write( "Also, .05B + .07S = 158.4 ---- eq (ii)
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document.write( " ------- Substituting  for S in eq (ii)
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document.write( ".15B + .07B = 475.2 ----------- Multiplying by LCD, 3 
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document.write( ".22B = 475.2
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document.write( "B, or amount invested in bonds = , or  \n" );
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