document.write( "Question 1203745: A man has $250,000 invested in three properties. One earns 12%, one 10% and one 8%. His annual income from the properties is $23,900 and the amount invested at 8% is twice that invested at 12%.
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document.write( "(a) How much is invested in each property?
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document.write( "12%property $
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document.write( "10%property $
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document.write( "8%property $ \r
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document.write( "(b) What is the annual income from each property?
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document.write( "12%property $
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document.write( "10%property $
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document.write( "8%property $
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Algebra.Com's Answer #839552 by mananth(16946) You can put this solution on YOUR website! A man has $250,000 invested in three properties. \r \n" ); document.write( "\n" ); document.write( "One earns 12%, Let investment in this one be $ x\r \n" ); document.write( "\n" ); document.write( "second at 10% Let investment in this one be $y\r \n" ); document.write( "\n" ); document.write( "and the amount invested at 8% is twice that invested at 12%.\r \n" ); document.write( "\n" ); document.write( "Third one 8%. So amount invested in this one is $ 2x \n" ); document.write( " \n" ); document.write( " $250,000 invested in three properties. \n" ); document.write( "x+y+2x =250000 \n" ); document.write( "3x+y = 250 000--------------------------------(1)\r \n" ); document.write( "\n" ); document.write( "His annual income from the properties is $23,900 \n" ); document.write( "Interest equation\r \n" ); document.write( "\n" ); document.write( "12%x +10%y + 8%(2x)= 23 900 \n" ); document.write( "0.12x+0.10y +0.16x =23900 \n" ); document.write( "0.28x + 0.10y - 23900----------------------------(2)\r \n" ); document.write( "\n" ); document.write( "Divide (1) by 10 \n" ); document.write( "0.30x+0.1y =25000 \n" ); document.write( "0.28x + 0.10y - 23900 (from (2) Subtract\r \n" ); document.write( "\n" ); document.write( "0.02x =1100 \n" ); document.write( "x = 1100/0.02 \n" ); document.write( "x =55 000\r \n" ); document.write( "\n" ); document.write( "2x = 110 000\r \n" ); document.write( "\n" ); document.write( "3x+y =250 000 \n" ); document.write( "3*55000+y = 250 000\r \n" ); document.write( "\n" ); document.write( "165 000 +y =250 000 \n" ); document.write( "y =85000\r \n" ); document.write( "\n" ); document.write( "12%property $ 55 000 \n" ); document.write( "10%property $ 85 000 \n" ); document.write( "8%property $ 110 000\r \n" ); document.write( "\n" ); document.write( "Check \r \n" ); document.write( "\n" ); document.write( "12%*55000+10%*85000+8%*110000 =23,900\r \n" ); document.write( "\n" ); document.write( "you can now calculate the annual income from each property? \n" ); document.write( "12%property $ \n" ); document.write( "10%property $ \n" ); document.write( "8%property $\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |