document.write( "Question 1119394: A bank loaned out $20,000
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document.write( "part of it at the rate of 6 %
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document.write( "per year and the rest at 14 %
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document.write( "per year. If the interest received in one year totaled $2000
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document.write( "how much was loaned at 6 % question mark \n" );
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Algebra.Com's Answer #734930 by Theo(13342)![]() ![]() You can put this solution on YOUR website! x = amount loaned at 6%. \n" ); document.write( "y = amount loaned at 14%.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x + y = 20,000\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( ".06 * x + .14 * y = 2000\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "these 2 equations need to be solved simultaneously.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "multiply both sides of the first equation by .06 and leave the second equation as is to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( ".06x + .06y = 1200 \n" ); document.write( ".06x + .14y = 2000\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "subtract the first equation from the second to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( ".08y = 800\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "solve for y to get y = 800/.08 = 10,000.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "that makes x = 10,000.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x + y = 20,000 so that part checks out.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( ".06 * 10,000 + .14 * 10,000 = 2,000 so that part checks out as well.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "your solution is that 10,000 was loaned out at 6%.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |